我省有小麦套种春大豆的习惯,由于小麦成熟迟,与大豆共生期长,株间荫蔽,加上旱地土壤有机质含量少,肥力低,管理粗放,以致大豆苗小苗弱,抗逆性差,造成亩株数不足,亩产120斤左右。为了种好麦套春大豆,提高产量,必须抓好以下几项措施: 一、麦行春锄,深施基肥 为了保证大豆苗齐苗壮,在小麦拔节期,应在麦行间结合深锄施用有机肥料,清除行间杂草,为大豆及时播种创造一个疏松、肥沃的土壤条件。大豆需钾肥较多,次于氮而多于磷。据测定,生产100斤大豆籽粒,需要从土壤中吸收纯氮3.5斤,纯磷1斤,纯钾 Our province has the habit of wheat intercropping spring soybeans. Due to the late maturity of wheat and the long symbiosis with soybean, the shade of the plants, the low content of organic matter in the dry land, the low fertility and extensive management led to the weak seedling and poor resistance of soybean seedlings Mu less than the number of acres, about 120 pounds per mu. In order to grow wheat sets of spring soybeans and increase production, we must do a good job in the following measures: First, wheat hoe spring, deep basal fertilizer In order to ensure that soybeans sprouting seedlings strong, jointing wheat lines in the wheat jointing stage, Application of organic fertilizer, clear the weeds between the rows, timely sowing soybean to create a loose, fertile soil conditions. Soy need more potassium, second to nitrogen and more than phosphorus. It is determined that the production of 100 kg of soybean seeds, need to absorb 3.5 kg of pure nitrogen from the soil, 1 kg of pure phosphorus, pure potassium