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研究了干旱地区棉田化肥不同施用量对棉花产量、经济效益及化肥利用率等的影响。结果表明,当前棉花生产对化肥依赖严重。若农民减少当前施肥量33.3%,也能达到当前的增产增收目的;同时能提高尿素利用率10.5百分点,提高磷酸二铵利用率7.3百分点,提高硫酸钾利用率32百分点;平均每公顷能增收2440.5元。
The effects of different application rates of chemical fertilizers on cotton yield, economic benefits and chemical fertilizer utilization in arid areas were studied. The results show that the current cotton production is heavily dependent on chemical fertilizers. If the farmers to reduce the current 33.3% of fertilizer, but also to achieve the current purpose of increasing production and income; the same time can improve the utilization rate of urea 10.5 percentage points to improve the utilization rate of 7.3% of the diammonium phosphate to improve the utilization rate of potassium sulfate 32 percentage points; yuan.