微生物杀菌剂噬菌核霉防治油菜菌核病试验研究

试验结果表明,微生物杀菌剂噬菌核霉2亿活孢子/克可湿性粉剂对油菜菌核病有较好的防治效果,在油菜移栽前2～4周,喷施于油菜田地表并用机械方法 （旋耕）把表面土壤翻入5～10cm的土壤中,基本能控制油菜菌核病的为害,其每hm2使用2 250g防效为82.70%,并可以与其它杀菌剂如菌核净40%可湿性粉剂混用,在保证防效的同时,可大幅度减少化学农药的用量。同时解决了油莱花期田间封闭施药不便和因下雨错过防治时机的难题。

Research on Sclerotinia Rot Of Cole Microbial Fungicide Coniothyrium Minitans Control

The results show that Microbial Fungicide Coniothyrium minitans WP（ 200 million spores per gram） is effective to control Sclerotinia sclerotiorum. Just 2～4 weeks before rapeseed plant transplanting,spraying it into the rape field surface and using mechanical methods（rotary tillage） turn it into the soil of 5～10cm,sclerotinia rot of cole can be effectively controlled,efficacy（ 2 250g per hm2） is 82.70%. It can be mixed with other fungicides,such as 40% dimetachlone WP,significantly reduce the usage amount of chemical pesticide,meanwhile guarantee the control effect. At the same time,it solve the problem,which is inconvenience for pesticide applying in cole flowering and rainy season.