我们从1993年开始,在小麦田套种玉米,玉米亩产高达750公斤,在全区示范40O0亩,在比较干旱条件下,套种玉米平均亩产670公斤,比对照田增产108.6公斤,增产率达33.07％;1994年扩大示范12000亩,平均亩产716公斤,比对照田增产98.6公斤,平均增产率为30.2％;1995年继续示范18000亩,平均亩产756.32公斤,比对照田增产126.3公斤,平均增产率为40.3％。 Since 1993, we started to plant maize and corn in the wheat fields up to 750 kilograms per mu, demonstrating 400 acres in the region. Under relatively dry conditions, the average yield per mu of intercropped corn was 670 kilograms, 108.6 kilograms more than that of the control field, and the yield was up to 33.7%. In 1994, 12,000 mu of demonstration land was expanded with an average yield of 716 kilograms, an increase of 98.6 kilograms compared with that of the control field with an average rate of increase of 30.2%. In 1995, 18,000 mu of land was continued demonstrating an average yield of 756.32 kilograms per mu, 126.3 kilograms more than the control plot. The average rate of increase was 40.3%.