江山市水稻配方施肥对产量效应的影响研究

目的]确定江山市水稻种植的最佳氮、磷、钾施肥配比,为水稻配方施肥提供科学依据。方法]以二优培9为供试品种,氮、磷、钾肥各设4个水平、18个组合处理,检测各处理对水稻产量因子及产量的影响。结果]以施氮肥180.0 kg/hm2的组合处理平均产量最高,磷素对产量的影响没有氮明显,钾肥的施用量越高产量越高。产量最高的组合处理为氮(N)180.0kg/hm2、磷(P2O5)90.0 kg/hm2、钾(K2O)225.0 kg/hm2,产量为9 271.5 kg/hm2。结论]结合当地生产实际,最佳施肥配方推荐量为:氮(N)180.0 kg/hm2、磷(P2O5)52.5～90.0 kg/hm2、钾(K2O)225.0 kg/hm2。

Effect of Formula Fertilization on Rice Yield in Jiangshan City

Objective]The paper was to determine the best fertilization ratio of nitrogen,phosphorus and potassium in rice cultivation in Jiangshan City,so as to provide scientific basis for rice formula fertilization.Method]With Eryoupei 9 as test variety,4 levels and 18 combinations of nitrogen,phosphorus and potassium fertilizer were set in the test respectively,and the effect of various treatments on rice yield factors and yield was detected.Result]The combination treatment with nitrogen fertilizer of 180.0 kg/hm2 had the highest average yield,and phosphorus had less obvious effect on yield than nitrogen.The higher the potassium application amount was,the higher the yield was.The combination treatment with the highest yield was nitrogen(N) 180.0 kg/hm2,phosphorus(P2O5) 90.0 kg/hm2 and potassium(K2O) 225.0 kg/hm2,and the yield was 9 271.5 kg/hm2.Conclusion]Combining the productive practice in local place,the recommended amount of optimal fertilization formula is as follows: nitrogen(N) 180.0 kg/hm2,phosphorus(P2O5) 52.5-90.0 kg/hm2 and potassium(K2O) 225.0 kg/hm2.