实验以水稻品种吉农大838为材料,以稻小孩壮秧剂混拌床土为对照,选择不同用量3种菌剂与壮秧剂组合共6个处理,测定水稻播种后25 d秧苗农艺性状和生理指标。结果表明,喷施0.25 ml 360°菌剂处理秧苗与对照相比,根条数、茎基宽、秧苗...实验以水稻品种吉农大838为材料,以稻小孩壮秧剂混拌床土为对照,选择不同用量3种菌剂与壮秧剂组合共6个处理,测定水稻播种后25 d秧苗农艺性状和生理指标。结果表明,喷施0.25 ml 360°菌剂处理秧苗与对照相比,根条数、茎基宽、秧苗干重均高于对照,株高略小于对照,叶绿素和可溶性蛋白含量差异均达到显著水平。菌剂与壮秧剂适宜量组合施用有提高育壮秧的效果。展开更多
To understand the changes in yield, harvest index （HI） and biomass of aboveground parts of rice, 33 japonica rice cultivars released from 1958 to 2005 were planted. During the 47 years, the grain yield increased fro...To understand the changes in yield, harvest index （HI） and biomass of aboveground parts of rice, 33 japonica rice cultivars released from 1958 to 2005 were planted. During the 47 years, the grain yield increased from 9 118.36 to 15 060.1 kg/hm2 and HI from 0.46 to 0.55. In the genetic improvement, the total number of tillers per plant decreased, and the biomass per unit area slightly increased at the harvest stage. The increases of yield and HI resulted from the increased biomasses of effective tillers and single stem, and the increase of biomass per stem was related to the increased biomasses of different organs along with the genetic improvement. The stem and sheath biomass at heading and the leaf biomass at 30 days after heading showed the highest increase, up by 75.17% and 49.94%, respectively. The biomasses of leaf and stem-sheath at 10 days after heading, and biomass per stem at 30 days after heading were obviously correlated with the yield. The results indicate that the genetic improvement has resulted in the increase of yield and HI. This increase is correlated with the decrease of total tiller number per plant, and increase of biomasses of effective tillers and single stem. The leaf biomass after heading and the stem and sheath biomass at 10 days after heading can be used as selection criteria for breeding high yielding rice cultivars.展开更多
目的:系统评价中医导引治疗颈椎病的临床疗效。方法:检索中国知网(CNKI)、万方、维普网(VIP)、Science Citation Index等数据库,筛选中医导引治疗颈椎病的相关临床研究文献,将符合纳入标准的文献进行质量评价后,使用Rev Man 5.3软件进行...目的:系统评价中医导引治疗颈椎病的临床疗效。方法:检索中国知网(CNKI)、万方、维普网(VIP)、Science Citation Index等数据库,筛选中医导引治疗颈椎病的相关临床研究文献,将符合纳入标准的文献进行质量评价后,使用Rev Man 5.3软件进行Meta分析。结果:最终纳入11个RCT,共749例患者,导引联合常规疗法在改善颈椎病患者VAS疼痛评分(MD=-1.31,95%CI[-1.50,-1.11],Z=13.29,P<0.05),提高临床总有效率(OR=3.75,95%CI[1.95,7.22],Z=3.96,P<0.05)等方面均优于单纯采用常规疗法的对照组。结论:与常规治疗相比,导引联合常规治疗在改善颈椎病患者疼痛,提高总有效率方面有一定优势,但本研究纳入的评价指标较少且偏于主观,同时中医导引法的概念缺乏统一规范的界定,因此本结论尚需临床进一步验证。展开更多
文摘实验以水稻品种吉农大838为材料,以稻小孩壮秧剂混拌床土为对照,选择不同用量3种菌剂与壮秧剂组合共6个处理,测定水稻播种后25 d秧苗农艺性状和生理指标。结果表明,喷施0.25 ml 360°菌剂处理秧苗与对照相比,根条数、茎基宽、秧苗干重均高于对照,株高略小于对照,叶绿素和可溶性蛋白含量差异均达到显著水平。菌剂与壮秧剂适宜量组合施用有提高育壮秧的效果。
基金supported by the National Jump Plan of Agriculture Science and Technology, China (Grant No. 200754)the Science and Technology Department of Key Projects of Jilin Province, China (Grant No. 20080201)
文摘To understand the changes in yield, harvest index （HI） and biomass of aboveground parts of rice, 33 japonica rice cultivars released from 1958 to 2005 were planted. During the 47 years, the grain yield increased from 9 118.36 to 15 060.1 kg/hm2 and HI from 0.46 to 0.55. In the genetic improvement, the total number of tillers per plant decreased, and the biomass per unit area slightly increased at the harvest stage. The increases of yield and HI resulted from the increased biomasses of effective tillers and single stem, and the increase of biomass per stem was related to the increased biomasses of different organs along with the genetic improvement. The stem and sheath biomass at heading and the leaf biomass at 30 days after heading showed the highest increase, up by 75.17% and 49.94%, respectively. The biomasses of leaf and stem-sheath at 10 days after heading, and biomass per stem at 30 days after heading were obviously correlated with the yield. The results indicate that the genetic improvement has resulted in the increase of yield and HI. This increase is correlated with the decrease of total tiller number per plant, and increase of biomasses of effective tillers and single stem. The leaf biomass after heading and the stem and sheath biomass at 10 days after heading can be used as selection criteria for breeding high yielding rice cultivars.
文摘目的:系统评价中医导引治疗颈椎病的临床疗效。方法:检索中国知网(CNKI)、万方、维普网(VIP)、Science Citation Index等数据库,筛选中医导引治疗颈椎病的相关临床研究文献,将符合纳入标准的文献进行质量评价后,使用Rev Man 5.3软件进行Meta分析。结果:最终纳入11个RCT,共749例患者,导引联合常规疗法在改善颈椎病患者VAS疼痛评分(MD=-1.31,95%CI[-1.50,-1.11],Z=13.29,P<0.05),提高临床总有效率(OR=3.75,95%CI[1.95,7.22],Z=3.96,P<0.05)等方面均优于单纯采用常规疗法的对照组。结论:与常规治疗相比,导引联合常规治疗在改善颈椎病患者疼痛,提高总有效率方面有一定优势,但本研究纳入的评价指标较少且偏于主观,同时中医导引法的概念缺乏统一规范的界定,因此本结论尚需临床进一步验证。
