长江流域蔬菜秋淡季一般出现在夏秋高温的8-9月,常伴有暴雨、干旱,病虫害频繁,防治难度增大。为了防御自然灾害,许多发达国家和地区已广泛应用防虫网覆盖栽培蔬菜。据台湾农友种苗公司介绍,台湾使用防虫网已非常普遍,用于厚皮甜瓜、十字花科、茄果、蔬菜等,效果良好。 1995—1996年,我们在镇江七里甸镇的江苏省蔬菜新品种引进技术示范园,进行了蔬菜防虫网覆盖栽培获得成功,有效地防止了菜青虫、小菜蛾、斜纹夜蛾等多种害虫入侵产卵,实现了叶菜不打药生产,既省药、省工,又减少了农药污染。1996年梅雨季节,降雨量达400mm,持续时间长,防虫网覆盖栽培更显示了防暴雨冲刷、防止土壤板结和倒苗、死苗的优越性。引起了各级政府和部门的重视,市科委、市蔬菜办联合在示范园召开了成果推广会议,在全市推广。据统计,1996年镇江市防虫网的应用面积 Autumn and winter vegetables in the Yangtze River Basin generally appear in summer and autumn high temperature from August to September, often accompanied by heavy rains, droughts, pests and diseases frequently, increasing the difficulty of prevention and treatment. In order to prevent natural disasters, many developed countries and regions have widely used insect net cover cultivation of vegetables. According to Taiwan’s farmers seedlings company introduction, the use of insect control network in Taiwan has been very common, for muskmelon, cruciferous, solanaceae, vegetables, etc., the effect is good. In 1995-1996, we successfully introduced new vegetable varieties in Jiangsu Province in the town of Qidian, Zhenjiang, and succeeded in covering the vegetable pest control net so as to effectively prevent the invasion of various pests such as cabbage caterpillar, diamondback moth, and Spodoptera litura Spawning, to achieve a leafy vegetables do not play drug production, both provincial medicine, labor, but also reduce pesticide pollution. Rainy season in 1996, the rainfall reached 400mm, long duration, insect net coverage cultivation also shows the anti-storm erosion, to prevent soil compaction and inverted seedlings, dead seedlings superiority. Aroused the attention of governments at all levels and departments, Municipal Science and Technology Commission, City Vegetable Office jointly held a results in the demonstration park promotion meeting in the city to promote. According to statistics, 1996 Zhenjiang City, the area of ​​application of insect net