摘要
为了探究水肥耦合对水分生产函数和水稻产量的影响,于2013年在庆安县和平灌溉试验站进行水稻田间试验,采用最优饱和D3-11设计方案,通过Jensen模型和回归模型进行数据分析、拟合方程,对水稻耗水规律和产量进行分析。结果表明:钾肥用量为95kg/hm2,磷肥用量为100kg/hm2,控制水稻分蘖后期土壤含水量下限值占饱和含水量的70%时,水稻可获得最佳产量。
In order to explore the influence of water and fertilizer coupling on water production function and yield of rice, field experiment was carried out in Helping irrigation station of Qingan county in 2013. Through the application of the optimal saturation D3-11 design, data analysis and equation fitting were performed with Jensen Model and regression model and the water consumption regulation and yield of rice were analyzed. The results showed that the rice yield reached optimal value with the potash fertilizer of 95 kg/hm^2, phosphatic fertilizer of 100 kg/hm^2, and soil moisture limit at final tillering stage of 70%.
基金
"十二五"国家科技支撑计划(2012BAD08B05)
关键词
水稻
水分生产函数
回归模型
水肥耦合
rice
water production function
regression model
water-fertilizer coupling
