黄豆肥田底,棉花(?)地力大豆在浙江各地有黄豆、白豆、六月豆、田豆等多种名称。大豆不仅营养丰富,而且有“肥田底”的作用,是许多作物的良好前作。大豆是一种豆科作物,依靠与它共生的根瘤菌,能固定空气中的游离氮素。据米苏斯金材料,每亩大豆在生长期中能固定氮素13.3斤,相当于66.5斤硫酸铵的含氮量。大豆 Soybean fertilizer at the end of cotton (?) Ground soybeans in Zhejiang all over the soybeans, white beans, June beans, Tian Dou and other names. Soybeans are not only nutritious, but also have the “fat bottom” effect, which is a good precedent for many crops. Soybean is a leguminous crop that relies on symbiotic rhizobia to immobilize free nitrogen in the air. According to Miss Su Sijin material, per acre of soybean in the growing season can fix nitrogen 13.3 kg, which is equivalent to 66.5 kg nitrogen content of ammonium sulfate. Soy