氮磷钾肥在扁沙泥田水稻上的施肥效果

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

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N9.083 kg/667 m2,P2O57.691 kg/667 m2,K2O14.013 kg/667 m2的水稻产量为562.72 kg/667 m2。

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 562.72 kg/667 m^2 of rice yield could be obtained under the application amount of N 9. 083 kg/667 m^2, P2O5 7. 691 kg/667 m^2 and K2O 14. 013 kg/667 m^2.