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Performance of Five Early Indica Rice Varieties under Direct Seeding in Jiangbei District
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作者 Xiaoping YING Hefang LI +1 位作者 Junjie LI Juanying HAN 《Meteorological and Environmental Research》 CAS 2023年第5期57-58,64,共3页
Comparative experiments were conducted on five conventional indica rice varieties,including Yongxian 15,Zhongzao 39,Shunda 135,Zhongzu 143,and Zhongzu 18.Under direct seeding conditions,their growth period and yield p... Comparative experiments were conducted on five conventional indica rice varieties,including Yongxian 15,Zhongzao 39,Shunda 135,Zhongzu 143,and Zhongzu 18.Under direct seeding conditions,their growth period and yield performance were investigated.The results showed that the yield of Zhonggang 143 and Shunda 135 was higher than that of Yongxian 15(CK),and Zhonggang 143 had the highest yield of 7.494 t/hm 2,followed by Shunda 135(7.467 t/hm 2);Yongxian 18(CK)has a yield of 7.326 t/hm 2.Taking into account factors such as field growth,yield,and growth period,Zhongzu 143 and Shunda 135 can be further promoted to optimize the early rice variety structure in Jiangbei District. 展开更多
关键词 early indica rice Direct seeding YIELD
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Effects of Plant Spacing and Finger Sticking Area Settings for Machine Transplanting on Yield of Double-season Early Rice
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作者 李木英 黄程宽 +2 位作者 谭雪明 潘晓华 石庆华 《Agricultural Science & Technology》 CAS 2016年第5期1089-1095,共7页
The effects of rice transplanters' transplanting settings(plant spacing and finger sticking area) on rice yield were investigated in two early-season rice cultivars:hybrid rice cultivar(Zhuliangyou 819) and conv... The effects of rice transplanters' transplanting settings(plant spacing and finger sticking area) on rice yield were investigated in two early-season rice cultivars:hybrid rice cultivar(Zhuliangyou 819) and conventional rice cultivar(Zhongjiazao 17).The results showed that,different transplanting settings resulted in different numbers of transplanted basic seedlings,and the rice yield was significantly correlated with the number of transplanted basic seedlings.The number of transplanted basic seedlings increased with the decrease of plant spacing and the increase of finger sticking area.The rate of lost hills of machine transplanting decreased with the increase of finger sticking area.The leaf area index and amount of dry matter accumulation were highly correlated with the number of transplanted basic seedlings.The average yield of the rice transplanted with a plant spacing of11.5 cm was higher than that with a plant spacing of 13.8 cm.In the field transplanted with the rice under the plant spacing of 13.8 cm,the rice yield increased with the increase of finger sticking area,and the finger sticking area of 2.23 cm2 showed the highest rice yield of 8 174.16 kg/hm2 of Zhuliangyou 819 and 7 925.54kg/hm2 of Zhongjiaozao17.In the field transplanted with the rice under the plant spacing of 11.5 cm,the rice yield was the highest with the finger sticking area of 1.83 cm2,and then decreased with the large finger sticking area.Under the plant spacing of 11.5 cm,the highest rice yields of Zhuliangyou 819 and Zhongjiaozao17 were 8 492.94 kg/hm2 and 8 000.23 kg/hm2,respectively.Therefore,the preferred machine transplanting settings for double-season early rice are a plant spacing of11.5 cm and a finger sticking area of 1.83 cm2,while the finger sticking area should be increased to 2.23 cm2 for conventional rice cultivars. 展开更多
关键词 double-season early rice TRANSPLANTER Plant spacing Finger sticking area YIELD
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Synthesis and paste properties of octenyl succinic anhydride modified early Indica rice starch 被引量:53
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作者 SONG Xiao-yan CHEN Qi-he RUAN Hui HE Guo-qing XU Qiong 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2006年第10期800-805,共6页
Octenyl succinic anhydride (OSA) modified early Indica rice starch was prepared in aqueous slurry systems using response surface methodology. The paste properties of the OSA starch were also investigated. Results in... Octenyl succinic anhydride (OSA) modified early Indica rice starch was prepared in aqueous slurry systems using response surface methodology. The paste properties of the OSA starch were also investigated. Results indicated that the suitable parameters for the preparation of OSA starch from early Indica rice starch were as follows: reaction period 4 h, reaction temperature 33.4℃, pH of reaction system 8.4, concentration of starch slurry 36.8% (in proportion to water, w/w), amount of OSA 3% (in proportion to starch, w/w). The degree of substitution was 0.0188 and the reaction efficiency was 81.0%. The results of paste properties showed that with increased OSA modification, the starch derivatives had higher paste clarity, decreased retrogradation and better freeze-thaw stability. 展开更多
关键词 early indica rice OSA starch Response surface methodology Paste properties
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Effects of different mechanical direct seeding methods on grain yield and lodging resistance of early indica rice in South China 被引量:10
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作者 WANG Wen-xia DU Jie +6 位作者 ZHOU Yan-zhi ZENG Yong-jun TAN Xue-ming PAN Xiao-hua SHI Qing-hua WU Zi-ming ZENG Yan-hua 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2021年第5期1204-1215,共12页
Direct seeding of rice has become a main planting method due to the low labor input and high economic benefit in South China.Dry direct seeding(DDS)has been widely used for single-season rice planting establishment.Ho... Direct seeding of rice has become a main planting method due to the low labor input and high economic benefit in South China.Dry direct seeding(DDS)has been widely used for single-season rice planting establishment.However,few studies have examined the performance of early-season indica rice under mechanical dry direct seeding.A two-year field experiment was conducted with two indica rice cultivars(i.e.,Zhongjiazao 17 and Zhuliangyou 819)to study lodging characteristics and grain yield formation under DDS,flooded direct seeding(FDS)and wet direct seeding(WDS)patterns.The results showed that the annual grain yield in DDS was higher by 14.42–26.34%for cultivar ZLY819 and 6.64–24.58%for cultivar ZJZ17 than in WDS and FDS,respectively,and these increases were mainly attributed to the improvement of the panicles.The DDS pattern significantly increased the seedling emergence rate of early indica rice cultivars,and increased total dry weight and crop growth rate.Meanwhile,shorter basal internodes,better stem diameter and stem wall thickness and lower lodging index were found in DDS in contrast to FDS and WDS.In particular,DDS improved the stem lodging resistance.Our results suggested that the appropriate direct seeding method was beneficial for improving the grain yield and lodging resistance of early indica rice. 展开更多
关键词 mechanical dry direct seeding early indica rice grain yield lodging resistance South China
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Effect of Temperature on Rice Starch Biosynthesis Metabolism at Grain-Filling Stage of Early Indica Rice 被引量:7
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作者 CHENGFang-min ZHUHai-jiang +1 位作者 ZHONGLian-jin SUNZong-xiu 《Agricultural Sciences in China》 CAS CSCD 2003年第5期473-482,共10页
The sucrose content, starch content and the ratio of amylose to total starch and the activities of six key enzymes, sucrose synthase(SS) , soluble starch synthesis enzyme(SSS) , ADPG pyrophosphorylase (ADPG-Ppase) , g... The sucrose content, starch content and the ratio of amylose to total starch and the activities of six key enzymes, sucrose synthase(SS) , soluble starch synthesis enzyme(SSS) , ADPG pyrophosphorylase (ADPG-Ppase) , granule-boundstarch synthase (GBSS), starch branching enzyme (SBE) and debranching enzyme (DBE) , which involved in starch synthesis metabolism of developing rice grains and effect of temperature on their activities were analyzed by using two early indica varieties Zhefu49 and Jiazao935 in phyto-trons, the daily average temperature was 22 and 32℃, respectively. Results showed that the sucrose content, the starch content, and the activities of enzymes such as SS, ADPG-Ppase, SSS, SBE, and DBE were generally higher under the high temperature treatment (32℃)at the beginning stage as compared with that under low temperature treatment (22℃). However, at the middle and late stages, there were great differences in the change trend of some enzyme activities, and the association with the sucrose content and starch content was very complicated. It could be found that the activities of SS and SSS under high temperature were always lower than that under low temperature, which was closely related to the variation of the sucrose content and starch-accumulating rate. Moreover, compared with ADPG-Ppase, the SS and SSS activities were more sensitive to temperature, indicating that SS and SSS were controlled by enzyme through affecting starch accumulating rate. Difference of the amylose/total starch ratio in developing grains between 32 and 22℃was significant and the lower amylose/total starch ratio was always lower in 32℃, which was closely related to the lower activity level of GBSS. Therefore, it could be concluded that effect of temperature on amylose /total starch was more attributable to GBSS rather than to SS, SSS, ADPG-Ppase, SBE and DBE. 展开更多
关键词 early-indica rice TEMPERATURE Starch synthesis Enzyme activity
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Resistance Evaluation of Some Hybrid Rice, Conventional Early Indica and Late Japonica Rice to Magnaporthe grisea
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作者 SHENYing AdreitHenry +3 位作者 ZHUXu-dong MilazzoJoelle CHENHong-qi TharreauDidier 《Agricultural Sciences in China》 CAS CSCD 2003年第12期1351-1356,共6页
Thirty isolates of Magnaporthe grisea collected from 18 provinces/cities representing 21 pathotypes and 9 different lineages were inoculated to rice varieties with known resistance genes and some hybrid rices, convent... Thirty isolates of Magnaporthe grisea collected from 18 provinces/cities representing 21 pathotypes and 9 different lineages were inoculated to rice varieties with known resistance genes and some hybrid rices, conventional early indica and late japonica varieties cultivated recently in China. Virulence spectrum of the 30 isolates was very different, showing that they recognize numerous different resistance genes. Varieties also revealed very different resistance patterns showing that they carry different resistance genes or combinations of resistance genes. On the basis of comparisons with international differential varieties with known resistance genes, resistance genes in certain Chinese varieties could be speculated. The results indicated that some of them were resistant to most of the isolates tested and that they could be of interest as resistance sources for hybrid parents or to be planted in the field directly. 展开更多
关键词 Magnaporthe grisea Resistance genes Hybrid rice early indica rice Late japonica rice
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Appearance of Jiangzao 361, a Conventional Early Indica Rice Variety, in Throwing Demonstration Experiment and Its Matching Throwing Technique
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作者 胡金和 张志英 +4 位作者 祝飞 曾良明 彭裕建 胡玉平 杨小华 《Agricultural Science & Technology》 CAS 2017年第12期2331-2334,共4页
In this paper, the characteristics of Jiangzao 361, as well as its appear- ance in throwing transplanting are introduced, and the high-yielding throwing tech- nique for Jiangzao 361 is summed up. On the basis of the e... In this paper, the characteristics of Jiangzao 361, as well as its appear- ance in throwing transplanting are introduced, and the high-yielding throwing tech- nique for Jiangzao 361 is summed up. On the basis of the experimental demon- stration, the corresponding matching throwing technique is put forward. 展开更多
关键词 Conventional early indica rice Jiangzao 361 Throwing technology
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高直链淀粉含量-软胶稠度早籼稻品种浙早33的选育
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作者 俞法明 张志红 +4 位作者 朱国富 翟荣荣 叶靖 巫明明 杨曙东 《浙江农业科学》 2024年第4期776-779,共4页
直链淀粉含量和胶稠度是早籼稻稻米品质中较为关键的指标,而高直链淀粉含量-软胶稠度稻米品质类型在早籼稻育种材料中出现频率较低。浙早33是浙江省农业科学院作物与核技术利用研究所选育的、于2023年通过浙江省主要农作物品种审定委员... 直链淀粉含量和胶稠度是早籼稻稻米品质中较为关键的指标,而高直链淀粉含量-软胶稠度稻米品质类型在早籼稻育种材料中出现频率较低。浙早33是浙江省农业科学院作物与核技术利用研究所选育的、于2023年通过浙江省主要农作物品种审定委员会审定的常规早籼稻品种。浙早33丰产性和稳产性较好,中抗稻瘟病,熟期和株型适中,后期转色好,稻米适合粮食加工用途,其中直链淀粉含量和胶稠度分别为29.3%、83.5 cm,属高直链淀粉含量-软胶稠度稻米品质类型。文章介绍了浙早33的亲本来源与选育经过、品种特性、栽培技术要点。 展开更多
关键词 直链淀粉含量 胶稠度 早籼稻 浙早33 选育
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灌浆期高温胁迫对早籼稻品质性状的影响 被引量:1
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作者 易晓璇 刘玮琦 +2 位作者 曾盖 罗丽华 肖应辉 《中国水稻科学》 CAS CSCD 北大核心 2024年第1期72-80,共9页
【目的】研究灌浆期高温胁迫对早籼稻碾磨、外观和蒸煮食味品质的影响,揭示早籼稻品质性状对灌浆期高温胁迫的响应规律。【方法】以R996、湘早籼45号和6个新育成的早籼稻品系为试验材料,以分期播种方式利用自然高温进行胁迫处理,分析了... 【目的】研究灌浆期高温胁迫对早籼稻碾磨、外观和蒸煮食味品质的影响,揭示早籼稻品质性状对灌浆期高温胁迫的响应规律。【方法】以R996、湘早籼45号和6个新育成的早籼稻品系为试验材料,以分期播种方式利用自然高温进行胁迫处理,分析了供试品系的碾磨、外观和蒸煮食味品质,筛选出对高温钝感和敏感的水稻品系,探究稻米品质性状对灌浆期高温胁迫的响应规律。【结果】稻米品质性状对灌浆期不同时段温度的敏感性不同,始穗后10 d内温度对稻米碾磨品质和蒸煮食味品质影响最显著,始穗后30 d内温度对稻米外观品质影响最显著。稻米品质对灌浆期高温胁迫的响应因性状而异,灌浆期高温胁迫显著降低糙米率、精米率、整精米率和粒长,显著提高垩白粒率、垩白度,劣化了稻米碾磨品质和外观品质;显著降低直链淀粉含量,提高米饭外观、米饭口感和米饭黏度,提升了米饭适口性。水稻品系对高温胁迫的响应因稻米品质性状而异,Q3、Q8、Q11、Q13属于碾磨品质高温钝感品系,Q3、Q4、Q5和Q11属于外观品质高温钝感品系且高温下蒸煮食味品质优。【结论】灌浆期高温胁迫会降低稻米的碾磨品质和外观品质,提高米饭适口性。水稻品系Q3和Q11碾磨品质、外观品质好且高温钝感,蒸煮食味品质优良,可望为早籼稻优质育种提供新的种质资源。 展开更多
关键词 早籼稻 灌浆期 高温胁迫 稻米品质
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差异化蛋白脱除对早籼米粉性质的影响
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作者 曹怡君 冯伟 +2 位作者 王韧 张昊 王涛 《食品与机械》 CSCD 北大核心 2024年第8期16-22,39,共8页
[目的]探究差异化脱蛋白对米粉理化功能性质的影响机制。[方法]采用酶法、碱法对米粉进行差异化蛋白脱除,并对脱蛋白米粉的破损淀粉含量、粒径分布、颗粒表观形态、溶解度、膨润力、糊化特性及质构特性进行分析。[结果]蛋白凝胶电泳(SDS... [目的]探究差异化脱蛋白对米粉理化功能性质的影响机制。[方法]采用酶法、碱法对米粉进行差异化蛋白脱除,并对脱蛋白米粉的破损淀粉含量、粒径分布、颗粒表观形态、溶解度、膨润力、糊化特性及质构特性进行分析。[结果]蛋白凝胶电泳(SDS-PAGE)和激光共聚焦(CLSM)结果表明,碱法是等比例脱除各蛋白亚基,而酶法对淀粉颗粒表面蛋白脱除的均一性更好;原粉粒径分布的主峰大约在70μm处,而脱蛋白米粉的主峰则向左偏移至6μm处;随着蛋白含量的降低,脱蛋白米粉的破损淀粉含量呈下降趋势,而弹性、硬度显著升高,其中酶法3%米粉的粒径分布最为均一,D90最小(23.58μm),破损淀粉含量也由原粉的3.32%降低至1.48%,而弹性和硬度相比原粉分别提高了54.55%,52.60%;与原粉相比,脱蛋白米粉具有较低的峰值黏度、崩解值和最终黏度,其中酶法3%米粉的崩解值和回生值均最小,说明其热糊稳定性最好,且不易回生。[结论]碱法和酶法均能有效脱除蛋白,提升早籼米粉的粉质特性,相比之下酶法处理条件更加温和,蛋白和粒径分布更加均一,抑制回生效果更明显。 展开更多
关键词 早籼米粉 脱蛋白 碱法 酶法
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华南双季稻区不同季别种植籼稻品种整精米率差异及高整精米率材料筛选
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作者 陈洛 李学忠 +6 位作者 谢国威 杨梯丰 杨武 赵均良 王丰 周玲艳 董景芳 《中国稻米》 北大核心 2024年第5期67-71,共5页
整精米率是决定稻米商品价值的重要性状之一,筛选不同环境条件下种植都具有高整精米率的品种具有重要意义。本研究通过比较357个籼稻种质在广东省农业科学院大丰试验基地不同年份(2021—2023)不同季节(早、晚季)种植时的整精米率,发现2... 整精米率是决定稻米商品价值的重要性状之一,筛选不同环境条件下种植都具有高整精米率的品种具有重要意义。本研究通过比较357个籼稻种质在广东省农业科学院大丰试验基地不同年份(2021—2023)不同季节(早、晚季)种植时的整精米率,发现2021年晚季的整精米率最好、2022年早季次之、2023年早季最差。其中,泰丰B、19香、广恢6200、粤黄丝苗、华新占、香雪丝苗等17份长粒籼稻的整精米率在3次不同种植环境下均达GB/T17891—2017优质稻标准,适用于高整精米率水稻育种。 展开更多
关键词 籼稻 整精米率 早季 晚季 华南稻区
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精准条播育秧机插下侧深施肥对优质早籼稻产量、品质形成及氮素吸收的影响
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作者 江达仁 熊若愚 +8 位作者 吴家青 毛付琴 冯俊杰 陶磊 谢小兵 潘晓华 曾勇军 王亚梁 曾研华 《作物学报》 CAS CSCD 北大核心 2024年第12期3096-3106,共11页
水稻作为中国的主要粮食作物,通过高效栽培技术增产对保障国家粮食安全至关重要。侧深施肥和精准条播育秧技术是提高水稻机械化高效种植的关键措施。明确精准条播育秧机插下侧深施肥对水稻产量形成、稻米品质及氮素吸收的影响,以期为南... 水稻作为中国的主要粮食作物,通过高效栽培技术增产对保障国家粮食安全至关重要。侧深施肥和精准条播育秧技术是提高水稻机械化高效种植的关键措施。明确精准条播育秧机插下侧深施肥对水稻产量形成、稻米品质及氮素吸收的影响,以期为南方稻区水稻机械化优质栽培提供理论依据。于2022-2023年连续进行2年大田试验,以五丰优286为供试材料,设置精准条播(PS)、传统撒播(BS)2种机械播种育秧方式与侧深施肥(SF)、常规施肥(CK)两种施肥方式的二因素试验,研究了不同处理对优质早籼稻秧苗素质、机插质量、产量形成、氮素吸收与稻米品质的影响。(1)侧深施肥精准条播的产量显著最高,与常规施肥相比,侧深施肥处理产量增幅9.97%~19.62%;相比传统撒播处理,精准条播处理增产4.32%~6.29%,主要得益于提高机插群体的有效穗数和均匀度。(2)与传统撒播相比,精准条播显著提高秧苗素质,降低漏秧率5.6%~6.0%,同时提高机插苗数均匀度22.0%~33.0%。(3)精准条播与侧深施肥均提高水稻分蘖高峰苗数,且增加生长期干物质积累量和叶面积指数,与常规施肥相比,侧深施肥显著提高成熟期干物质积累量15.71%~18.08%、叶面积指数19.15%~20.78%;相较传统撒播,精准条播显著提高成熟期干物质积累量4.56%~7.42%、叶面积指数8.08%~9.88%。(4)在生育中后期(穗分化期—成熟期),侧深施肥精准条播提高植株氮素积累量,与常规施肥相比,侧深施肥显著提高成熟期氮素积累量22.66%~28.24%;相较传统撒播,精准条播显著提高成熟期氮素积累量7.97%~11.76%。(5)与常规施肥相比,侧深施肥显著降低稻米垩白粒率10.63%~20.41%、垩白度13.63%~19.62%和直链淀粉含量8.08%~10.42%,但提高蛋白质含量10.98%~11.25%。精准条播育秧机插下侧深施肥能提高秧苗素质,改善机插质量,提高水稻分蘖成穗与生长发育特性,以及氮素吸收量,从而增加优质早籼稻产量;同时,改善稻米外观品质,但增加稻米蛋白质含量。 展开更多
关键词 机械化插秧 侧深施肥 精准条播育秧 早籼稻 产量 氮素吸收
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早稻舜达135特早栽培高产技术研究
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作者 张莉 周宇尘 +4 位作者 罗高明 梁燕 顾淑华 沈菁 张国萍 《中国稻米》 北大核心 2024年第2期87-90,共4页
舜达135是绍兴市舜达种业有限公司与中国水稻研究所联合育成的早熟常规早籼稻新品种。为充分发挥该品种早熟、高产优势,在特早栽培条件下(播种期比绍兴传统播期提早10~15 d)开展了不同梯度机插密度和肥料用量对比试验。结果表明,不同机... 舜达135是绍兴市舜达种业有限公司与中国水稻研究所联合育成的早熟常规早籼稻新品种。为充分发挥该品种早熟、高产优势,在特早栽培条件下(播种期比绍兴传统播期提早10~15 d)开展了不同梯度机插密度和肥料用量对比试验。结果表明,不同机插密度对舜达135有效穗数和产量有极显著影响,对穗粒数和结实率影响未达到显著水平;不同氮肥水平和氮肥水平与机插密度的互作对舜达135有效穗数、穗粒数、结实率和产量的影响均不显著;以种植密度25 cm×14 cm、纯氮施用量150 kg/hm^(2)的处理实际产量最高,达9 633.45 kg/hm^(2)。在2021年和2022年示范中,特早栽培条件下舜达135百亩示范方产量分别达到10 563.00 kg/hm^(2)和10 258.05 kg/hm^(2)。通过2年的示范,总结提出了舜达135特早栽培高产技术。 展开更多
关键词 早籼稻 舜达135 氮肥运筹 机插密度 特早栽培高产技术
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高温条件下早籼稻灌浆期生理变化与垩白形成的关系
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作者 许金科 谢琴 +4 位作者 魏曼琳 彭仟 苏益 萧浪涛 蔺万煌 《湖南农业大学学报(自然科学版)》 CAS CSCD 北大核心 2024年第1期36-42,126,共8页
为探究高温条件下水稻垩白形成的生理机制,以高垩白性状湘早籼24号(X24)及其来源亲本湘早籼11号(X11,高垩白性状)和湘早籼7号(X7,低垩白性状)为材料进行盆栽试验,在抽穗后第6天移入温室,进行为期15 d的高温处理(27~42℃),以常温处理(23... 为探究高温条件下水稻垩白形成的生理机制,以高垩白性状湘早籼24号(X24)及其来源亲本湘早籼11号(X11,高垩白性状)和湘早籼7号(X7,低垩白性状)为材料进行盆栽试验,在抽穗后第6天移入温室,进行为期15 d的高温处理(27~42℃),以常温处理(23~37℃)作为对照,研究灌浆期高温条件下剑叶净光合速率、籽粒灌浆速率、籽粒直链淀粉含量及淀粉合成相关基因的相对表达量等的变化。结果表明:高温条件下X7、X11和X24的稻米垩白度比常温对照处理的分别增加了2.53、4.82、6.66个百分点;高温造成X11和X24的叶片净光合速率在抽穗后第8、12、16天显著低于常温对照的,而X7的叶片净光合速率在抽穗后第16天反而高于常温对照的;高温条件下水稻在抽穗后第8天灌浆速率加快,并在抽穗后第12天达到最大值,较常温处理的提前了4~8 d;基因相对表达量差异分析表明,X11和X24籽粒淀粉合成相关基因Os SSIIIa、Os AGPSL2和GBSSI在抽穗后第12、16天的表达显著下调,导致籽粒直链淀粉含量降低及垩白度增加。 展开更多
关键词 早籼稻 高温胁迫 垩白 生理特性 淀粉合成
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高产抗病优质专用早籼稻金早645的选育与应用
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作者 邓飞 王孔俭 +3 位作者 陆爱国 周建霞 鲍艳红 朱浩 《浙江农业科学》 2024年第8期1851-1855,共5页
金早645是金华市农业科学研究院和金华三才种业公司以金早09与Z73-34杂交,系谱选育而成的高产、抗病、优质、专用常规早籼稻,2021年通过浙江省主要农作物品种审定委员会审定,2023年通过江西省农业农村厅引种备案并获植物新品种权授权,2... 金早645是金华市农业科学研究院和金华三才种业公司以金早09与Z73-34杂交,系谱选育而成的高产、抗病、优质、专用常规早籼稻,2021年通过浙江省主要农作物品种审定委员会审定,2023年通过江西省农业农村厅引种备案并获植物新品种权授权,2024年被列入浙江省主导品种。该品种在2019—2023年浙江省、江西省水稻新品种区域试验和示范种植中表现出群体整齐、分蘖力强、抗稻瘟病、抗倒性强、丰产性、稳产性、适应性较好等特点,具有较高的推广应用价值。 展开更多
关键词 早籼稻 金早645 选育 特征特性 栽培技术 应用
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不同早籼稻新品种在金华地区的比较
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作者 鲍苗青 杜佳 陈鹏 《浙江农业科学》 2024年第4期799-801,共3页
以中组101等11个早籼稻新品种为对象,在金华地区开展区域试验。结果表明,嘉创92的产量最高,667 m^(2)产量达645.0 kg,其次是甬籼980,667 m^(2)产量为641.7 kg;生育期分别比对照短3、5 d,在生产上可作为双季稻种植大户前茬中熟早籼稻搭... 以中组101等11个早籼稻新品种为对象,在金华地区开展区域试验。结果表明,嘉创92的产量最高,667 m^(2)产量达645.0 kg,其次是甬籼980,667 m^(2)产量为641.7 kg;生育期分别比对照短3、5 d,在生产上可作为双季稻种植大户前茬中熟早籼稻搭配品种。研究为嘉创92、甬籼980品种在金华地区试种引进提供了理论依据。 展开更多
关键词 新品种 早籼稻 区域试验
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早熟籼稻低留桩机收再生丰产优质增效栽培技术 被引量:5
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作者 习敏 涂德宝 +6 位作者 周永进 李忠 胡润 程太平 孙雪原 许有尊 吴文革 《中国稻米》 北大核心 2023年第5期93-95,共3页
针对现有杂交中籼稻高留桩机收再生栽培模式存在头季机收碾压严重、再生季生长期短等导致再生季产量不高、品质差的问题,结合区域生态气候特点和生产实际,创建了以“品种选择、适期早播、氮肥优化管理、干湿交替灌溉、低留桩收割(10~15 ... 针对现有杂交中籼稻高留桩机收再生栽培模式存在头季机收碾压严重、再生季生长期短等导致再生季产量不高、品质差的问题,结合区域生态气候特点和生产实际,创建了以“品种选择、适期早播、氮肥优化管理、干湿交替灌溉、低留桩收割(10~15 cm)”等措施为核心的早熟籼稻低留桩机收再生栽培模式。与杂交中籼稻高留桩机收再生栽培模式相比,新模式将再生季生育期延长了20~30 d,将头季与再生季温光资源的分配率由7∶3提高至6∶4,实现再生稻高产优质与资源高效协同。 展开更多
关键词 再生稻 早熟籼稻 低留桩机收 丰产高效栽培技术
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Analysis of Super-high Yield Population in Rice Zhongzao 39
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作者 Sheng ZHANG Taiyun LIN 《Agricultural Biotechnology》 CAS 2018年第5期64-66,共3页
[Objectives] The paper focused on the way how to promote yield of early indica rice Zhongzao 39. [Methods] At different yield levels, the yield components of super-high yield population in Zhongzao 39 were analyzed. C... [Objectives] The paper focused on the way how to promote yield of early indica rice Zhongzao 39. [Methods] At different yield levels, the yield components of super-high yield population in Zhongzao 39 were analyzed. Correlation analysis, regression analysis and path analysis were performed to analyze the relationship among traits and their contributions to yield. [Results] The performance of ear, grain and weight in Zhongzao 39 showed significant differences among different yield levels. It showed that the direct contributions of main economic traits to yield were determined to be 1 000-grain weight〉effective ears〉seed setting rate〉filled grains per ear. [Conclusions] The super-high yielding and effective cultivation techniques were suggested as follows: on the basis of the increasing number of effective ears and the remaining of grain weight, a stable seed setting rate should be considered. 展开更多
关键词 Zhongzao 39 early indica rice High yield population
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等氮替代施入生物炭对南方免耕早稻田温室气体排放的影响 被引量:3
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作者 李诗 张俊辉 +5 位作者 胡钧铭 周凤珏 李婷婷 徐美花 马洁萍 陆展彩 《中国农业气象》 CSCD 北大核心 2023年第10期863-875,共13页
生物炭是新型外源有机底物,其稳定性好,吸附性强,富含碳营养物,常作为固碳减排的重要有机资源。中国南方早籼稻产量高,雨热同期且种植制度独特,2021-2022年试验在典型籼稻区南宁开展,共设置3种处理分别为,对照处理(CK):不施肥;无机氮投... 生物炭是新型外源有机底物,其稳定性好,吸附性强,富含碳营养物,常作为固碳减排的重要有机资源。中国南方早籼稻产量高,雨热同期且种植制度独特,2021-2022年试验在典型籼稻区南宁开展,共设置3种处理分别为,对照处理(CK):不施肥;无机氮投入(T1,化肥)处理:化肥施用量为常规施肥水平,复合肥800kg·hm^(-2),尿素260.87kg·hm^(-2),钾肥193.55kg·hm^(-2);无机氮配施有机氮(T2,生物炭+化肥)处理:生物炭4000kg·hm^(-2),复合肥738.67kg·hm^(-2),尿素146.09kg·hm^(-2),钾肥34.19kg·hm^(-2)。本研究在水稻插秧5d后,采用分离式静态箱-气相色谱法,定期监测水稻生育期内稻田土壤温室气体排放,解析其温室气体累计排放量、排放当量及水稻产量性状,探讨等氮替代施入生物炭对南方早稻田温室气体排放、水稻产量的影响,为优化集约化早籼稻低碳种植和减肥增效提供依据。结果表明:(1)生物炭能降低稻田土壤CH_(4)、CO_(2)排放,通过减缓CH_(4)排放而减小综合排放当量。化肥配施生物炭可减缓单施化肥引起的温室气体碳源增排效应,其减缓CO_(2)排放的延后效应较明显,生物炭处理(T2)中,与化肥处理(T1)相比,2021年CH_(4)最大排放通量降低41.38%,累计排放量降低31.25%,2022年最大排放通量降低50.50%,累计排放量显著降低50%,2a的综合排放当量显著低于T1处理;2021年CO_(2)最大排放通量、累计排放量分别比T1处理减小57.38%和37.68%,2022年比T1处理分别相应减小16.06%和35.52%。(2)生物炭可抑制N_(2)O排放,显著降低累计排放量,减小氮源排放当量。与T1处理对比,T2处理2021年N_(2)O最大排放通量减小5.43%,而累计排放量显著降低33.53%;2022最大排放通量减小73.75%,累计排放量显著降低54.33%。(3)生物炭利于集约化早籼稻种植结构优化,提升早籼稻生产力。生物炭投入稻田2a后,增产效果明显,T2处理的理论产量为T1处理的1.02~1.33倍,实际产量则是T1处理的1.06~1.32倍。化肥配施生物炭减少了早籼稻田温室气体排放,增加了水稻产量,可作为南方集约化早籼稻低碳生产优化模式。 展开更多
关键词 温室气体 生物炭 低碳优化 集约化稻田 早籼稻
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中科发早粳1号分子设计育种 被引量:2
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作者 陈明江 刘贵富 +2 位作者 肖叶青 余泓 李家洋 《遗传》 CAS CSCD 北大核心 2023年第9期829-834,共6页
双季早稻生产是粮食产业的重要组成部分。近期,双季早粳稻品种培育取得了重要进展,育成了兼具高产、优质、高抗的中科发早粳1号等双季早粳稻新品种/系。中科发早粳1号是利用分子设计育种体系,针对双季早稻生产中长期难以解决的经济效益... 双季早稻生产是粮食产业的重要组成部分。近期,双季早粳稻品种培育取得了重要进展,育成了兼具高产、优质、高抗的中科发早粳1号等双季早粳稻新品种/系。中科发早粳1号是利用分子设计育种体系,针对双季早稻生产中长期难以解决的经济效益低、稻米品质差、早期耐寒差和易穗萌等问题,选取含有不同优异基因的空育131、南方长粒粳与吉粳88为亲本,通过关键基因筛选聚合培育而成。中科发早粳1号株型紧凑,株高90厘米,每穗粒数120粒,结实率85%,千粒重26克,每公顷产量8.25吨,主要米质指标达到部颁粳稻品种品质等级二级及以上。中科发早粳1号的成功培育将为双季早稻产业发展提供新的思路与动力。 展开更多
关键词 水稻 双季早稻 双季早籼稻 双季早粳稻 分子设计育种
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