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无公害蔬菜病虫害防治有效的方法有两种:一种是物理防治,一种是生物防治。物理防治这是一种较理想的无公害防治方法,通过设施栽培创造不利于病虫发生但却有利于或无碍于作物生长的生态条件的防治方法。它可通过病虫对温度、湿度或光谱、颜色、声音等的反应能力,用调控办法来控制病害发生,杀死、驱避或隔离害虫。1.在设施栽培中可通过控制温湿度,遏制病菌的生长和浸染,减轻霜霉病、细菌性角斑病、黑心病等的危害,利用太阳能进行高温闷棚可防治多种土传病害及线虫。2.在大棚或温室中铺盖地膜、无滴膜从而降低棚室湿
There are two effective ways to prevent and control pollution-free vegetables pests: one is physical control and the other is biological control. Physical Prevention and Control This is a more ideal method for pollution prevention and control. Through the cultivation of facilities, it is possible to create a prevention and control method that is not conducive to pests and diseases but conducive to or not impeding the ecological conditions of crop growth. It can control diseases by controlling the temperature, humidity or spectrum, color, sound and other diseases and insect pests, kill, repel or isolate pests. 1. In the cultivation of facilities can be controlled by the temperature and humidity, to curb the growth and dissemination of germs, reduce downy mildew, bacterial angular leaf disease, black heart disease and other hazards, the use of solar high temperature bored shed can prevent a variety of soil-borne diseases and Nematodes. 2. In the greenhouse or greenhouse cover film, no drip film thereby reducing the greenhouse wet