氮磷钾肥在扁沙泥田水稻上的施肥效果

采用氮、磷、钾肥"3414"田间试验设计方法,研究德江县扁沙泥田水稻产量和施肥量的关系,并建立水稻产量与施肥量的数学模型.结果表明,氮、磷、钾肥配合施用,水稻植株群体与个体协调,肥料利用率提高,水稻产量增加、经济效益显著.回归分析得出,最佳施肥量为N 9.083 kg/667 m2,P2O5 7.691 kg/667 m2,K2O 14.013 kg/667 m2的水稻产量为562.72 kg/667 m2.

The Relationship between N, P and K Application Amount and Rice Yield in the Field with Sandy and Muddy Soil

The 3414 application design was used in rice to establish the mathematical model between application amount and rice yield.The results showed that the proper N,P and K amount could increase the rice yield and output value by raising its effective spikes,seed setting rate per spike and 1000-grain weight and 562.72kg/667m2 of rice yield could be obtained under the application amount of N 9.083kg/667m2,P2O5 7.691kg/667m2 and K2O 14.013kg/667m2.