摘要
[Objective] This study was conducted to optimize the suitable application amounts of nitrogen fertilizer and phosphate fertilizer for winter wheat.[Method] A field experiment was carried out to investigate the effects of the application amounts of nitrogen fertilizer and phosphate fertilizer on the yield of winter wheat.[Result]The quadratic simulation function between the application of nitrogen fertilizer and wheat yield was y =-0.6611x^2＋20.091 x ＋234.85,with a correlation coefficient of0.970 8,and the yield of winter wheat was the highest at the application amount of nitrogen fertilizer of 228.0 kg/hm^2.The quadratic simulation function between the application of phosphate fertilizer and wheat yield was y =-0.572 6x^2＋13.168 x ＋340.4,with a correlation coefficient of 0.921 95,and the yield of winter wheat was the highest at the application amount of phosphate fertilizer of 172.5 kg/hm^2.[Conclusion] This study provides a scientific basis for the rational application of nitrogen fertilizer and phosphate fertilizer on winter wheat.
[目的]优化冬小麦氮肥和磷肥的适宜用量。[方法]采用田间试验,研究了氮肥和磷肥施用量对冬小麦产量的影响。[结果]氮肥的施用量与小麦产量的二次模拟函数为y=-0.661 1x^2+20.091x+234.85,相关系数为0.970 8,冬小麦产量达到最高时的氮肥施用量为228.0 kg/hm^2。磷肥的施用量与冬小麦产量的二次模拟函数为y=-0.572 6x^2+13.168x+340.4,相关系数为0.921 95,冬小麦产量达到最高时的磷肥施用量为172.5 kg/hm^2。[结论]该研究为冬小麦合理施用氮肥和磷肥提供了科学依据。
基金
烟台市科技发展计划资助项目(2007155)~~
