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北京地区的夏季,高温多雨、风雹和病、虫等灾害也多,对各种夏播蔬菜生产非常不利,多年来8、9月份的蔬菜市场形成“淡季”。特别是茄果瓜豆类蔬菜的供应数量更少,如何改进淡季上市蔬菜的栽培技术,改善8、9月份市场蔬菜供应的被动局面,历来是我市各级领导、城乡人民和广大蔬菜科技人员共同关心的重大问题之一。 1979～1981年,本市郊区在春菜上对30多种蔬菜进行了地膜覆盖栽培试验、示范和推广,到1981年春,地膜覆盖栽培面积已发展到2万多亩(1984年达7万多亩)。对8、9月淡季上市的夏播蔬菜采用地膜覆盖栽培,会不会同样获得增产、增收的效益和改善淡季市场供应呢?
In the summer of Beijing, hot and rainy weather, hail and diseases such as wind and hail, insects and other disasters are also many, which are very unfavorable to the production of various summer sowing vegetables. In the past 8 or 9 months, the vegetable market has formed a “low season.” In particular, the supply of fruits and vegetables melon beans less, how to improve the off-season vegetable cultivation techniques to improve the market in August and September, the passive supply of vegetables, has always been the city leaders at all levels, urban and rural areas and the majority of vegetable science and technology personnel One of the major issues of common concern. From 1979 to 1981, more than 30 kinds of vegetables were planted, cultivated and tested, demonstrated and popularized in the suburbs of the city in the Spring Vegetables. By the spring of 1981, the area covered with plastic mulch had grown to more than 20,000 mu (more than 70,000 mu in 1984 ). On the 8, September off-season listing of summer sowing mulched vegetables, will not be the same yield, income and improve off-season market supply it?