水稻磷钾肥用量调整小区试验结果浅析

Analysis on the results of plot experiment for rice phosphate and potash fertilizer applying amount adjustment

在氮肥用量相同的情况下,探讨在水稻栽培中对磷、钾肥用量的最佳配比,进行磷、钾肥不同用量调整的田间小区试验,从作物性状、产量、经济效益等方面,得出最佳磷钾肥用量方案。结果表明:当N、P2O5、K2O用量分别为150kg/hm2、60kg/hm2和96kg/hm2(即氮磷钾比例为1:0.4:0.64)时,其经济性状指标与产量最高,并能取得最好的经济效益。

In the circumstances of the same nitrogen fertilizer applying amount, to explore the best proportion of phosphorus and potassium fertilizer in rice cultivation, Field plot experiments were conducted for different P, K applying amount adjustment. From the aspects of crop characters, yield, economic benefit, the optimum applying amount of phosphorus and potassium fertilizer scheme was obtained. Theresults show that when the N- P2O5-K2O ratio is 150-60-96kg/hm^2 （i.e. NPK ratio： 1：0.4：0.64）, theeconomic characters indexes and yield will be the highest, and the best economic benefits can be obtained.