土壤2016，Vol.48Issue(2)：254-258,5.DOI:10.13758/j.cnki.tr.2016.02.007
氮肥运筹对超级稻库源关系、干物质积累及产量的影响
Effects of Nitrogen Application on Source-sink Relationship, Dry Matter Accumulation and Yield of Super Hybrid Rice
摘要
Abstract
Effects of nitrogen application on source-sink relationship, dry matter accumulation and yield of Yangliangyou-6 and Xinliangyou-6 were studied. The total nitrogen fertilizer was 600 kg/hm2 urea and applied with several modes. The results indicated that the postponing N application reduced the tiller number and increased panicle bearing tiller rate compared with total nitrogen applied as basal fertilizer. This type of nitrogen application also increased the effective leaf area of full heading date, coordinated the source-sink relationship, and increased the dry matter accumulation of middle period and final stage and the yield of rice significantly. Among the tested nitrogen application modes, the treatment with a ratio of basal fertilizer: tillering fertilizer: spikelet-promoting fertilizer: spikelet-protecting fertilizer: grain fertilizer at 3︰1︰1︰1︰0 obtained the highest grain yield, and the yields of Yangliangyou-6 and Xinliangyou-6 were increased by 22.86% and 27.15%. While that with the ratio at 1︰1︰0︰0︰0 had the lowest grain yield, and the yields of the two varieties of rice were decreased by 7.69% and 6.32%.关键词
氮肥运筹/超级稻/库源关系/干物质积累/产量Key words
Nitrogen application/Super hybrid rice/Source-sink relationship/Dry matter accumulation/Yield分类
农业科技引用本文复制引用
杨安中,吴文革,李泽福,段素梅,陈刚,许有尊..氮肥运筹对超级稻库源关系、干物质积累及产量的影响[J].土壤,2016,48(2):254-258,5.基金项目
国家科技支撑计划项目(2011BAD16B06)、国家公益性行业(农业)科研专项(201309102)和安徽科技学院自然科学基金项目(ZRC2014424)资助。 （2011BAD16B06）
