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玉米覆膜集雨技术是具有集雨保墒、提高地温、抑制杂草和提高产量等作用,可以有效解决旱地缺水和低温问题。从2004年开始在我国甘肃等地区试验和推广,并取得了飞跃式的进展,成为一种实用的旱作农业生产技术。延庆县是北京市严重缺水的区县之一,也是一个玉米生产大县,常年玉米平均种植面积是2万hm~2,占全县总耕地面积的60%以上,但具有灌溉条件的不足十分之一。为此,引进覆膜集雨技术在延庆县进行试验,探讨玉米增产效果,为提高
The technology of rainwater harvesting has the functions of rainwater harvesting, soil temperature increase, weed suppression and yield increase, which can effectively solve the problems of water shortage and low temperature in drylands. Since 2004, it has been piloted and popularized in Gansu and other regions of our country and made leaps and bounds. It has become a practical dry farming technology. Yanqing County, one of the counties and counties under severe water shortage in Beijing, is also a large county of corn production. The annual average corn planting area is 20,000 hm 2, accounting for more than 60% of the total cultivated land area in the county, but it has insufficient irrigation conditions one tenth. To this end, the introduction of plastic film rainwater harvesting technology in Yanqing County to test to explore the effect of corn yield, in order to improve