我县有山、有川、有平原,年平均气温13℃,降雨量500毫米,无霜期200天左右,常年以麦、棉生产为主,兼有瓜菜等经济作物。自1980年推广地膜覆盖栽培以来,广大农民群策群力。在棉田实行间作套种,种植效益迅速提高。以1986年为例,间套的亩收入可增加212元,比不间套的增收53％。现将我县几年来棉瓜菜间套的几种模式与经济效益分述如下。 My county has mountains, a river, a plain, the annual average temperature of 13 ℃, rainfall 500 mm, frost-free period of about 200 days, perennial wheat, cotton-based production, both cucumbers and other cash crops. Since the promotion of plastic film mulch cultivation in 1980, the vast majority of peasants have worked together. In intercropping cotton intercropping, planting efficiency increased rapidly. Take 1986 as an example. The mu income of intercropping can be increased by 212 yuan, an increase of 53% over the non-interplanted income. Several years now my county cotton melon sets of several models and economic benefits are as follows.