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为验证陕西省西安市高陵区夏玉米肥料配方的准确性,最大限度地减少配方大面积应用中存在的风险,同时也为展示测土配方施肥效益。设置测土配方施肥、常规施肥和空白三个处理。结果表明:夏玉米配方施肥比当前农户习惯施肥平均每亩增产140.1kg,节约化肥成本20.3元,亩节本增效334.8元,最佳化肥使用量为N 16kg/667m~2,P_2O_5 7kg/667m~2,K_2O 4kg/667m~2。
In order to verify the accuracy of summer maize fertilizer formula in Gaoling District of Xi’an in Shaanxi Province and minimize the risks of large-scale application of formula, it also shows the benefits of soil testing and formula fertilization. Set soil testing and fertilizer, conventional fertilization and blank three treatment. The results showed that the formula fertilization of summer maize increased 140.1kg per acre compared with that of current peasants, saving fertilizer costs of 20.3 yuan and 334.8 yuan per acre. The optimal fertilizer use was N 16kg / 667m ~ 2 and P_2O_7 7kg / 667m ~ 2, K_2O 4kg / 667m ~ 2.