水稻最佳施肥试验研究

Study on Effect of Different Ration of Nitrogen,Phosphate and Potash Fertilizers on Yield of Rice

为了获得水稻栽培中氮、磷、钾最佳施用量,在海南省定安县龙门镇大山村委会清水塘选取有代表性的稻田进行"3414"肥料效应试验。试验结果表明,该田块最佳施肥量为纯氮10.59kg/kg/667m2,五氧化二磷7.338kg/667m2,氧化钾14.942kg/667m2。在中量施肥水平下,肥料对产量的贡献为43.68%;N肥对产量的贡献达40.47%;P肥的贡献为9.31%;K肥的贡献为25.16%。

＂3414＂ best regression design was used to study the effects of different ration of nitrogen, phosphate and potash fertilizers on yield of flee. Through the equation of ＂3414＂ fertilizer effect experiment, the results showed that, the optimum nitrogen, phosphate and potash dosages of rice respectively were 10.59 kg/667m2, 7. 338 kg/667m2, 14. 942 kg/667m2. Under this experimental condition, the contributive ratio of the middle fertilization on yield was 43.68% ; the contributive ra- tio of nitrogen, phosphate and potash fertilizers on yield of flee reached 40.47% , 9.31%, and25.16% respectively.