龙粳31密度和田间肥料效应分析

The Effect of Planting Density and Fertilizer on Yield for Rice Longjing 31

采用测土配方施肥统一推荐的"3414"设计,对水稻龙粳31的肥料效应进行分析,通过氮、磷、钾不同处理试验,对肥料的用量进行适当的调整,得出最佳的施肥指标体系。结果表明:两个密度下线性加平台模型拟合的最佳施肥量好于一元二次模型和三元二次模型的拟合施肥量,最佳施肥量为M1:N(尿素)154.8kg/hm2、P(磷酸二铵)99.5kg/hm2、K(硫酸钾)192.0kg/hm2;M2:N(尿素)135.75kg/hm2、P(磷酸二铵)115.2kg/hm2、K(硫酸钾)155.2kg/hm2,M1施肥量高于M2,M1产量也高于M2。

To make clear the best fertilizer indicators for rice Longjing 31 ,different N P K treatments trails were conducted using fertilization unified recommended ＂3414＂ design, analyzing the effect of fertilizer on rice yield. The result showed that linear plus platform optimum fertilization model fit better than a quadratic model and the quadratic model under both densities, optimum fertilization as M l： N （urea） 154.8kg/hm^2, P （phosphate diamine） 99.5kg/hm^2 ,K （potassium） 192kg/hm^2 ;M2 ： N （urea） 135.75kg/hm^2 ,P （diamine phosphate） 115.2kg/hm^2 ,K （potassium） 155.2kg/hm^2. M1 fertilizer is more than M2 .and M1 yield is also higher than M2.