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对西瓜、早晚稻病虫及天敌发生动态和消长规律进行了系统调查分析。结果表明,西瓜与早稻嵌镶式种植和与优质晚稻连作种植,这种农作制度和栽培方式,因生态环境的改变,可显著地影响与它关联的害虫和益虫在种群数量上的变动,并可促使稻田生物群落发生变化,从而导致水稻害虫种群数量减少,蜘蛛及其它天敌种群数量增加。利用这一生态调控技术,结合健身栽培、杀虫灯等措施,可有效减少化学农药用量。
The watermelon, early and late rice pests and natural enemies of the dynamics and the growth and decline of the rules were systematically investigated and analyzed. The results showed that mosaic planting of watermelon and early rice and continuous planting of high quality late rice, this farming system and cultivation method could significantly affect the population change of pests and beneficial insects associated with it due to the change of ecological environment, And can promote the change of paddy field biota. As a result, the population of rice pests reduced and the population of spiders and other natural enemies increased. The use of ecological control technology, combined with fitness cultivation, insecticidal lamps and other measures, can effectively reduce the amount of chemical pesticides.