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要做到科学合理防治蔬菜病虫害,必须做到以下三点: 一、采用生态防治或施用抗菌素类药物保护地栽培是蔬菜特有的生产方式,利用保护地内的气候条件,创造适合蔬菜生长而不利于病害发生的环境条件,达到防病的目的叫生态防治。如温室或大棚黄瓜霜霉病,就可采用生态防治。具体做法是:前期早上放风1小时,使废气排出,上午闭棚,使温度升到30—34℃;中午、下午放风,使温度降到20—25℃,湿度降到60—70％,叶子上没有水滴也没有水膜;傍晚再放风3个小时左右,当夜间最低温度达14℃以上时,可整夜放风。
To achieve scientific and rational control of pests and diseases of vegetables, we must achieve the following three points: First, the use of ecological control or the use of antimicrobial drugs Protected cultivation is a vegetable-specific production methods, the use of protected climatic conditions to create suitable for vegetable growth is not conducive Environmental conditions of disease, to achieve the purpose of preventing diseases called ecological control. Such as greenhouse or greenhouse cucumber downy mildew, you can use ecological control. The specific approach is: the first morning of the wind 1 hour, the exhaust emissions, closed the morning shed, the temperature rose to 30-34 ℃; noon, afternoon wind, the temperature dropped to 20-25 ℃, the humidity dropped to 60-70%, leaves There is no water on the water film; in the evening and then the wind for about 3 hours, when the night minimum temperature of 14 ℃ or more, you can blew all night.