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根据各地的试验结果,次豆花期叶面喷施氮肥,一般可增产4.5%～10.5%。大豆叶面喷肥应用较多的肥料主要有:尿素、钼酸铵、磷酸二氢钾、硝酸铵、过磷酸钙浸出液、重过磷酸钙、硫酸钾等。黑龙江八五二农场每公顷采用尿素9千克、重过磷酸钙3.45千克、钼酸铵150克配成溶液,进行叶面喷施,增产大豆16.6%。
According to the results of the tests all over the country, nitrogen fertilizer was applied to foliar flowering stage of sub-bean stage, which generally increased 4.5% -10.5%. Soybean foliar fertilizer application more fertilizer are: urea, ammonium molybdate, potassium dihydrogen phosphate, ammonium nitrate, superphosphate leaching solution, heavy superphosphate, potassium sulfate and so on. Heilongjiang 8 52 farms per hectare using urea 9 kg, 3.45 kg triple superphosphate, ammonium molybdate 150 g dubbed the solution, the foliar spray, an increase of 16.6% of soybean.