桐梓县水稻不同配方施肥模式的效应研究

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

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/667m2 of urea,66.7 kg/667m2 of calcium superphosphate and 20.0 kg/667m2 of potassium chloride,and the rational application combination was 26.5 kg/667m2 of urea and 66.7 kg/667m2of 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.