摘要
[目的]探讨水稻高产施肥数学模型。[方法]采用3因素5水平二次通用旋转回归组合设计建立数学模型。[结果]水稻单产≥9750kg/hm^2的最优施肥组合为：氮（N）242.0～283.4kg/hm^2,磷（P2O5）117.2～149.4kg/hm^2,钾（K2O）183.9～237.6kg/hm^2,概率≥95%。[结论]采用最优施肥方案,水稻单产可达10159.5kg/hm^2,比当地习惯施肥增产895.5kg/hm^2,增产9.67%,增产效果十分明显。
[Objective] The study aimed to establish mathematics model of fertilization for high yield rice. [Method] The mathematics model was established by secondary rotatable regression design and three factors five levels experiment. [Result] In the field with middling fertility in Linyi area,it was very important for high yield rice to balance nitrogen,phosphor and potassium fertilizers together.The best fertilizer constitute for rice to obtain yields higher or equal to 9750 /hm^2 was nitrogen（N） 242.0～283.4 kg/hm^2,phosphor（P2O5）117.2～149.4 kg/hm^2 and potassium（K2O）183.9～237.6 kg/hm^2.[Conclusion] The increase of rice yield by the use of mathematics model was very remarkable.
出处
《安徽农业科学》
CAS
北大核心
2008年第13期5537-5539,共3页
Journal of Anhui Agricultural Sciences
关键词
水稻
施肥模型
氮磷钾
Rice
Mathematics model
Phosphor
