肥料与密度对寒地水稻源库关系的影响

Effect of fertilizer and Density on the relationship between Source and Sink of Rice in Cold Area

以龙粳14为试验材料,研究了氮磷钾肥用量与密度对源库关系及产量的影响。结果表明:蘖肥氮用量、密度因素与叶面积指数间存在着显著的正相关关系;基肥氮用量、蘖肥氮用量显著影响颖花量,所以适当增加基肥氮用量、蘖肥氮用量、密度都会提高源库质量;源库质量对产量影响显著,叶面积指数、颖花数增大会有效的提高产量。

An experiment was carried out to study the effect of N, P, and K amount and transplanting density on the relationship of source and sink in Longjing 14, a rice variety. The results showed that tillering N fertilizer amount and density had significantly positive relationship with leaf area index; basal N amount and tillering N amount affected significantly flowers, therefore, the moderate increase of basal N amount, tillering N amount and density could improve the quality of source and sink, which significantly affects the yields.