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随着农业生产的发展,化肥施用量不断增加,由于施肥技术落后,大面积人工表施,造成很大浪费。机械深施化肥比表面撒施可以减少挥发和流失,提高肥效,避免烧苗,有利作物吸收,促进生长发育,使作物明显增产。据测定,尿素表施的利用率只有40.6％,冀县50万亩农作物机械深施比人工表施肥效利用率提高到90％;碳铵表施的利用率为10-17％,机械深施比人工表施肥效利用率提高到60-70％。机械深施破铵使小麦平均亩增产82.1公斤,而表施亩增产43.6公斤,机械深施比表施增38.5公斤;机械深施碳铵使玉米平均亩增产86.1公斤,表施
With the development of agricultural production, the application of chemical fertilizers has been continuously increasing. As a result of the backward fertilization technology and the large-scale artificial display, great waste has been caused. Deep application of chemical fertilizers than the surface can reduce volatilization and loss, improve fertilizer efficiency, avoid burning seedlings, favorable crop absorption, promote growth and development, the crop significantly increased. According to the determination, the utilization rate of urea is only 40.6%, and the utilization efficiency of 50 million mu of crops in Ji County is 90% higher than that of artificial fertilizer; the utilization rate of ammonium bicarbonate is 10-17% Fertilizer efficiency than artificial table efficiency increased to 60-70%. Ammonium deep mechanical shelling of wheat average yield of 82.1 kilograms of wheat, while the table is applied to increase the yield 43.6 kg mu, the mechanical depth of application of 38.5 kg; the depth of mechanical ammonium bicarbonate so that the average yield of 86.1 kg of corn,