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我场通过多年实验和大面积生产应用,证明大豆花期追施氮肥,可满足花荚期需氮量大的生理要求,达到增产的目的。一、追施尿素的增产效果我场大豆花期追氮始于1975年。通过多年实验调查,亩施10—14斤尿素,平均增产10—34％(表1)。每斤化肥增产大豆2.42—5.61斤,经济效益0.49—1.45元。每亩地增产大豆28—67斤,经济效益6.09—17.4元。
My field through years of experiments and large-scale production applications, to prove soybean topdressing nitrogen fertilizer, flower pod to meet the physiological requirements of large nitrogen demand, to achieve the purpose of increasing production. First, the effect of topdressing urea yield My field soybean chasing nitrogen began in 1975. After years of experimental investigation, Mushi 10-14 kg of urea, an average yield of 10-34% (Table 1). Soybean yield 2.42-5.61 kg per kilogram of chemical fertilizer, economic 0.49-1.45 yuan. Soybean yield per acre 28-67 pounds, 6.09-17.4 yuan economic benefits.