海南琼海地区水稻氮磷钾“3414”肥效研究

The “3414” Fertilizer Effect on Paddy in Qionghai, Hainan

水稻是海南省重要的粮食作物,生产上施肥不合理的现象比较普遍。本研究采用测土配方施肥"3414"试验设计,对海南省琼海地区晚稻进行氮磷钾肥料效应研究。结果表明:(1)3种肥料对晚稻产量影响大小为:N>K>P;(2)处理6平均产量最高,达6 600 kg/hm^2;(3)最高农艺施肥方案为尿素153.1 kg/hm^2,过磷酸钙69.83 kg/hm^2,氯化钾147.84 kg/hm^2,此时水稻产量为6 622 kg/hm^2;(4)最佳经济效益方案为尿素158.7 kg/hm^2,过磷酸钙101 kg/hm^2,氯化钾113.2 kg/hm^2,水稻产量为5 855 kg/hm^2。

Fertilizing in rice is not scientific in most cases at the moment in Hainan. In this work, a ＂ 3414＂fertilizer effect test in Qionghai was made. The results showed that：（1） The influence on rice yield from high to low was N, K and P.（2） The highest average yield of 6 600 kg/hm-2 was found in the Experiment 6.（ 3） The best fertilization combination with rile yietd 6 622 kg/hm-2 was N 153.1 kg/hm-2, P2O569.83 kg/hm-2, K_2O 147.8 kg/hm-2.（ 4） Best economic benefit combination with rice yield 5 855 kg/hm-2 was N 158.7 kg/hm-2, P2O5101 kg/hm-2, K_2O113.2 kg/hm-2.