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1.科学的施肥配方夏玉米施肥过量,施肥量越大产量越低。必须通过田间试验,确定经济合理的施肥配方。以不施肥区夏玉米产量为依据把地力分为三级:即每公顷夏玉米产量低于3750公斤为低产田;3750~5250公斤为中产田;5250公斤以上为高产田。低产田:目标产量6000~6750公斤,每公顷需
1. Scientific fertilization formula summer maize fertilizer overdose, the greater the amount of fertilizer the lower the yield. Must be field trials to determine the economic and reasonable fertilizer formula. Fertility in non-fertilization area based on corn yield is divided into three levels: that is, per hectare of summer corn production is less than 3750 kilograms of low-yielding fields; 3750 ~ 5250 kilograms of middle-yielding fields; 5250 kilograms or more of high yield fields. Low-yield field: The target output of 6000 ~ 6750 kg, per hectare required