大豆玉米间作,是我国各地区的主要间作形式,南方各省与大豆间套作的作物和类型更为复杂。我省大豆则有95％左右以间套作为主,主要与玉米间作,也有与洋芋、烤烟、茶等作物间作的。间套面积为500～667万亩,占旱地播种面积的20～27％。 实践证明,大豆合理间套作,与清种比较起来,更好地利用时间、空间和光能,以提高产量。但如果作物间的关系处理不当,也会使大豆大幅度的减产。大豆玉米间作减产的原因,主要是玉米植株高大遮荫,处于 Intercropping of soybean and corn is a major intercropping pattern in all regions of our country. The crops and types of intercropping between the southern provinces and soya are more complicated. About 95% of the province’s soybeans are mainly used for intercropping, mainly for intercropping with corn, as well as intercropping with potatoes, tobacco, tea and other crops. Between the sets of 500 ~ 667 acres, accounting for dry land sown area of ​​20 to 27%. Practice has proved that the intercropping of soybean reasonable, compared with the clear species, make better use of time, space and light energy to increase production. However, if the relationship between crops is not handled properly, the soybean production will also be significantly reduced. Intercropping soybeans for intercropping reasons, mainly tall and shady corn plants, at