氮磷肥料与水稻产量性状关系的研究

目的]研究新疆西北部地区水稻的需肥规律,为合理施肥提供技术参考,避免和减少不合理的施肥现象。方法]采用二次饱和D-最优设计法,研究了氮、磷肥施用量对水稻产量及其相关性状的影响,建立了氮、磷素化肥施用量与产量及产量相关性间的回归方程。结果]水稻生产中氮肥对穗数、穗粒数、产量的影响高于磷肥;氮磷配合的最适用量为：氮肥（N）272.12～440.98 kg/hm^2,磷肥（P2O5）62.96～145.67 kg/hm^2,氮磷比（N∶P2O5）1.00∶0.21～0.32,此时可获得水稻最佳产量为10186.75～15 283.32 kg/hm^2。氮磷肥料最佳用量范围内,氮肥对穗数、穗粒数、产量的影响大于磷肥;当氮磷肥料超出此范围时会产生负效应;氮磷肥料配合施用可促进穗数及产量的增加。结论]不能盲目加大肥料用量,要氮磷配合且按配方施肥,同时加强土壤培肥也是至关重要的。

Research on the Relationship between the Application of Nitrogen and Phosphorus Fertilizer and the Character of Rice Yield

Objective] The reference for the reasonable fertilization for paddy field in northwestern Xinjiang was provided through the research on the rule of fertilizer need of rice.Method] The influence of the application amount of nitrogen and phosphorus fertilizer on rice yield and relevant properties were studied with the method of twice saturated D-optimal design and the return equation among nitrogen,phosphorus and rice yield,other properties was set up.Results] The result showed that the influence of nitrog...