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“以磷增氮”是我国广大劳动人民在长期的生产斗争和科学试验中创造出的先进经验。它不仅是利用豆科植物对难溶性磷吸收能力强的生理特点,而且又利用豆科植物具有固氮的能力。因此无论把它用作肥料或饲料,均能促进氮、磷营养物质在农业生产中的循环,从而提高了土壤肥力,增加了作物产量。综合各地资料,每亩紫云英施15—20斤磷
“Increasing nitrogen by phosphorus” is an advanced experience created by the working people in our country in the long struggle for production and in scientific experiments. It is not only the use of legumes on the insoluble ability of phosphorus absorption of physiological characteristics, but also the use of legumes have the ability to fix nitrogen. Therefore, regardless of whether it is used as a fertilizer or feed, it can promote the circulation of nitrogen and phosphorus nutrients in agricultural production, thereby increasing soil fertility and increasing crop yield. Based on the data from all over, 15-20 kg of phosphorus are applied per acre