小区和示范性试验结果均表明，２０％绿保素１０００和１５００倍液于４月和１０月小菜蛾虫口密度大的时期喷施阳春大白菜和甘蓝，药后３ｄ对小菜蛾的校正防效为８０．６％和７８．６％，７ｄ分别达８７．３％和８１．３％，防效高于１０００单位螨虫素１５００倍液和５０％辛硫磷１５００倍液，差异极显著。绿保素的速效性、持效性均较好，对蔬菜也无不良影响。 Community and experimental results show that 20% chlorophyll 1000 and 1500 times the liquid phase of April and October diamondback moth density spray period of spring Chinese cabbage and cabbage, 3d after the correct control of the diamondback moth Which was 80.6% and 78.6% respectively, reaching 87.3% and 81.3% on the 7th day respectively. The control effect was higher than 1,500 times of 1000 units of mites and 1,500 times of 50% of phoxim, the difference was extremely significant. Chlorophyll fast-acting, persistence are better, no adverse effects on vegetables.