桐梓县水稻不同配方施肥模式的效应研究

The Effect of Different Formulation Application Pattern on Rice Yield in Tongzi County

采用"3414"平衡施肥方案,在桐梓县肥力较高的油潮泥田上进行了超级稻准两优527的肥料效应田间试验。结果表明,从水稻经济性状和单产水平看,以N2P2K2的效果最好,即适宜的肥料配方为尿素26.5 kg/667m2、普钙66.7 kg/667m2、氯化钾20.0 kg/667m2。经济合理的肥料配方为N2P2K0,即尿素26.5 kg/667m2、普钙66.7 kg/667m2。合理的施用方法为:尿素50%作基肥,40%作分蘖肥,10%作穗肥;氯化钾70%作基肥,30%作穗肥;普钙全部作基肥。氮肥增产最大,磷肥次之,钾肥的增产效果较小。

The ＂3414＂ balance application pattern was tested in rice fields with a high fertility to investigate the application effect on yield of Zhunliangyou 527 （a hybrid rice variety with super-high yield）. The results showed that the economical characters and yield was the best under the application combination of 26.5 kg/667m^2 of urea, 66. 7 kg/667m^2 of calcium superphosphate and 20.0 kg/667m^2 of potassium chloride, and the rational application combination was 26.5 kg/667m^2 of urea and 66.7 kg/667m^2 of calcium superphosphate. And the rational application method was the base manure of 50% urea ＋ 70% potassium chloride ＋ 100% calcium superphosphate, the tillering manure of 40%urea and the spike manure of 10% urea and 30% potassium chloride. The effect of N, P and K fertilizer on rice yield was N〉P〉K.