摘要
该文采用田间随机区组设计,以巨型稻“丰超6号”为供试材料,以磷钾肥为基肥,设置氮肥或硅肥使用组合的4种处理:不施氮肥和硅肥(CK)、施氮肥(N)、施氮肥配施低量硅肥(NSi_(1))和施氮肥配施高量硅肥(NSi_(2)).研究结果表明:相对于CK处理,施用氮肥和硅肥使水稻地上部和根系生物量分别增加了55.6%和67.0%,使水稻根冠比分别增加了30.8%和46.2%.与CK处理相比,施用氮肥和硅肥使巨型稻分蘖数分别增加了23.9%和45.0%;与单施氮肥相比,氮、硅肥配施使分蘖数进一步增加了17.1%,施用氮肥和硅肥使巨型稻SPAD值(叶绿素相对含量)分别增加了9.7%和19.8%.氮、硅肥配施使土壤碱解氮和有效硅含量分别增加了19.2%~31.5%和9.2%~28.5%.NSi_(2)处理较NSi_(1)处理的氮肥利用率提高了16.5%.与单施氮肥相比,NSi_(1)处理使巨型稻产量提高了11.7%,而NSi_(2)处理使巨型稻产量显著增加26.1%.在巨型稻种植过程中以氮肥配施高量硅肥(NSi_(2))处理效果最好.
The randomized block design is used in this study,"Fengchao 6"is used as the test material,and phosphorus and potassium fertilizer is used as the base fertilizer.Four treatments of nitrogen or silicon fertilizer combination are set such as no nitrogen and silicon fertilizer(CK),nitrogen fertilizer(N),nitrogen fertilizer combined with low silicon fertilizer(NSi_(1))and nitrogen fertilizer combined with silicon fertilizer High silicon fertilizer(NSi_(2)).The results show that compared with CK treatment,the aboveground biomass and root biomass of rice increase by 55.6%and 67.0%,respectively,and the root shoot ratio increases by 30.8%and 46.2%,respectively.Compared with CK treatment,the tiller number of giant rice increases by 23.9%and 45.0%respectively under nitrogen and silicon application.Compared with nitrogen application alone,the tiller number further increases by 17.1%,and SPAD value(relative chlorophyll content)of giant rice increases by 9.7%and 19.8%respectively under nitrogen and silicon application.Combined application of nitrogen and silicon increases the contents of available nitrogen and silicon by 19.2%~31.5%and 9.2%~28.5%,respectively.The nitrogen use efficiency of NSi_(2)is 16.49%higher than that of NSi_(1).Compared with nitrogen application alone,NSi_(1)treatment increases the yield of giant rice by 11.7%,while NSi_(2)treatment significantly increases the yield of giant rice by 26.1%.Nitrogen fertilizer combined with high silicon fertilizer(NSi_(2))has the best effect on giant rice.
作者
刘友恒
李巧云
吴传发
王祎
崔延春
葛体达
吴善桃
夏新界
吴金水
LIU Youheng;LI Qiaoyun;WU Chuanfa;WANG Yi;CUI Yanchun;GE Tida;WU Shantao;XIA Xinjie;WU Jinshui(College of Resources and Environment,Hunan Agricultural University,Changsha Hunan 410128,China;Changsha Research Station for Agricultural and Environmental Monitoring,Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha Hunan 410125,China;College of Biology and Technology,Hunan Agricultural University,Changsha Hunan 410128,China;College of Resource and Urban Planning Management,Guangzhou Xinhua University,Guangzhou Guangdong 510310,China;Hubei Yefeng Ecological Agricultural Technology Copany Limited,Huanggang Hubei 438000,China)
出处
《江西师范大学学报(自然科学版)》
CAS
北大核心
2021年第6期595-601,共7页
Journal of Jiangxi Normal University(Natural Science Edition)
基金
国家自然科学基金(41811540031)
中国科学院亚热带农业生态研究所青年创新团队课题(2017QNCXTD_GTD)
湖北省中国科学院科技合作专项资助项目.
关键词
巨型稻
农艺性状
氮硅肥配施
养分利用
产量
giant rice
agronomic traits
nitrogen and silicon fertilizer application
nutrient utilization
yield