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近两年来,我们协同有关农科组织,在夏大豆花期用不同浓度的氮、磷、钾和钼、锰、镁混合肥进行叶面喷施,获得了增产效果.实践证明,这种方法成本低,效果好,是一项经济有效的增产措施.一、增产效果据1977—1978连续两年在全县6个点试验结果:在大豆花期喷施1次叶肥的平均亩产264斤,比对照(喷清水,下同)平均亩产236斤,亩增28斤,增产11.8%;喷施叶肥2次的平均亩产273.5斤,比对照增产18.2%;喷3次叶肥的平均亩产294.3斤,比对照增产24.9%(见表1).
In the past two years, we collaborated with the relevant agricultural organizations to achieve the yield increase effect by spraying foliar fertilizers with different concentrations of nitrogen, phosphorus, potassium, molybdenum, manganese and magnesium in the flowering stage of summer soybean. The practice proved that the cost of this method Low, the effect is good, is a cost-effective stimulation measures.First, the effect of increasing production According to 1977-1978 for two consecutive years in the county six points test results: In the soybean flowering once foliar fertilizer average yield 264 pounds, Compared with the control (spraying water, the same below), the average per mu yield was 236 kg and the mu was increased by 28 kg and the yield was 11.8%. The average mu yield of leaf fertilizer 2 times was 273.5 kg, 18.2% more than that of the control. Yield 294.3 kg, 24.9% more yield than the control (see Table 1).