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1991年,乌丹地区有50亩小麦玉米间作混合产量均达到了双千斤。即吨粮田标准。其技术措施主要是: 一、采用带型种植,有采用2米带型的,即2垄玉米,7行小麦。小麦畦宽1.2米,玉米畦宽0.8米。也有采用1.8米带型的,即2垄玉米,6行小麦。小麦畦宽1米,玉米畦宽0.8米。还有采用3.33米带型的,即4垄玉米,11～12行小麦,小麦畦宽1.66米,玉米畦宽1.66米。
In 1991, a total area of 50 mu of wheat and maize in Wutan reached inter-crop production of double kilos. That is, the standard of grain field. The technical measures are mainly: First, the use of strip planting, there are 2-meter strip type, that is, 2 ridge corn, 7 lines of wheat. Wheat 畦 wide 1.2 meters, corn 畦 wide 0.8 meters. There are also used 1.8-meter type, that is, 2 ridge corn, 6 rows of wheat. Wheat 畦 wide 1 meter, corn 畦 wide 0.8 meters. There are 3.33 m with the type, that is, 4 Ridge corn, 11 to 12 lines of wheat, wheat 畦 1.66 meters wide, 1.66 meters wide 畦 corn.