黄淮流域地区中产小麦不同基本苗条件下氮磷用量及经济效益研究

Study on Quantity of Nitrogen and Phosphorus Application and Economic Benefit of Middle Wheat Under the Condition of Different Basic Seedling in Huang Huai Valley Area

采用裂区设计和2因素4水平最优设计的方法,结果表明：中产小麦在不同基本苗条件下,获得373.3~390.4 kg/666.67 m2的最高产量,需施N、P2O5分别为17.49~23.31 kg/666.67 m2和10.62~23.79 kg/666.67 m2;产量为350 kg/666.67 m2左右时,需施N、P2O5分别为5.63~7.33 kg/666.6 7小m2麦和5.39~6.35 kg/666.67 m2,其经济效益最佳。

By using the method of split plot design with two factors and four levels of the optimal design,the results showed that middle winter wheat under the condition of different basic seedling, obtained the highest yield 373.3-390.4 kg/666.67 m2, N ,P205 were needed for 17.49-23.31 kg/666.67 m： and 10.62~23.79 kg/666.67 m2 respectively.When output of 350 kg/666.67 m2 were obtained, applications of N,P20s were 5.63-7.33 kg/666.67 m2 and 5.39-6.35 kg/666.67 m2 respectively, the economic benefits were the best.