万荣县地处干旱高原,农作物以麦、棉为主,棉麦倒茬是当地主要轮作方式。在大田生产中,往往因耕作粗放,使小麦播期推迟,水、肥、热不足,形成冬前弱苗。1983年冬季,我们用地膜覆盖了3亩棉茬晚播小麦,次年春季又把地膜移覆到棉田,显著提高了棉茬晚播的小麦产量和地膜投资的经济效益。 Wanrong County is located in arid plateau, crops mainly wheat, cotton-based, wheat and wheat stubble is the main rotation mode. In the field of production, often due to extensive farming, so that delayed sowing of wheat, water, fertilizer and heat deficiency, the formation of weak winter seedlings. In the winter of 1983, we covered three acres of cotton crop with laterally sowed wheat and the subsequent spring, we moved the mulch to the cotton fields again, significantly increasing the yield of wheat and the economic benefits of plastic film investment.