摘要
通过D饱和最优回归设计田间试验测得的参数,建立以水稻产量为目标函数的回归模型,并依此计算得出水稻最大施肥量为纯N220.9 kg/hm2,P2O5170.3 kg/hm2,经济最佳施肥量为纯N219.96 kg/hm2,P2O5169.7 kg/hm2,并对氮、磷单因素效应及两因素互作效应作了剖析.
The effect on the rice yield had been studied according to the results in the field trials with optimum regression,the regression model was built with the rice yield as the objective function.The corresponding values of maximum amount of nitrogen and phosphor were obtained when obtaining the highest expectation rice yield by running the model function.The maximum amount of nitrogen and phosphor should be pure N 220.9 kg/hm2 and P2O5 170.3 kg/hm2.Economical optimum amount of nitrogen and phosphor should be 219.9 kg pure N/hm2 and P2O5 169.7 kg /hm2.At the same time,the single effect of nitrogen and phosphor and their mutual effect of the two chemical fertilizers were analyzed.
出处
《河南科技学院学报》
2010年第3期12-15,共4页
Journal of Henan Institute of Science and Technology(Natural Science Edition)
基金
河南省重大科技专项"小麦新品种百农矮抗58产业化研究与开发"(081100110200)
关键词
水稻
氮、磷肥
施肥模型
最佳配比
rice
nitrogen and phosphor fertilizer
fertilizer model
optimum proportion
