摘要
培育高γ-氨基丁酸(GABA)和抗性淀粉(RS)的水稻品种,并配之相应的栽培措施是功能稻生产的重要环节之一。本文以云南和浙江近期育成的4个水稻新品系为材料,研究了不同时期养分管理对水稻产量及其构成因子的影响。结果表明:①基肥和分蘖肥对水稻的产量、每穗有效穗、一次枝梗数、二次枝梗数和总粒数的提高作用最为显著。穗肥能增加水稻成穗率、穗长、结实率、千粒重和剑叶、倒二叶长宽。②不同时期养分管理对杂交稻的影响比常规稻更显著。加强水稻生长发育后期的养分管理能显著提高杂交水稻的产量。
A field experiment was conducted to study the effect of nutrient management on yield and yield components of rice by using four cultivars derived from Yunnan and Zhejiang in the recent years.The result indicated that：（i）the basal fertilizer and tiller fertilizer had significant effect on yield,effective panicles,number of grains on primary rachis-branch per panicle,number of grains on secondary rachis-branch per panicle,number of grains per panicle.The productive tiller percentage,spike length,seed setting rate,1000-grain weight,flag leaf length and width,second leaf length and width,have a significant enhance by panicle fertilizer.（ii） the significant effects of different fertilizer time were observed on nutrient management of different fertilizer time in hybrid than that in conventional rice.Nutrient management at late stage of rice growth significantly increased the yield of hybrid.
出处
《西南农业学报》
CSCD
北大核心
2009年第5期1363-1366,共4页
Southwest China Journal of Agricultural Sciences
基金
国家自然科学基金(30660092)
云南省"人才培引"项目(2005PY01-14)
云南省省院省校科技合作(2006YX12)
关键词
水稻
养分管理
施肥时期
产量
Rice（Oryza sativa L.）
Nutrient management
Fertilization time
Yield
