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[目的]确定68.75%氟吡菌胺.霜霉威SC在不同时期施药对辣椒疫病的防治效果及安全性。[方法]以中椒7号为供试材料,辣椒疫病为防治对象,研究几种药剂不同施药时期施用对辣椒疫病防治效果。[结果]68.75%氟吡菌胺.霜霉威SC对辣椒疫病有很好的防治效果,在试验剂量内对辣椒安全无药害。药剂施药时期不同,对辣椒疫病防治效果不同,最佳途径是苗期用药和移栽后田间喷雾相结合。推荐苗期使用72.2%霜霉威盐酸盐AS 43 320 g/hm2苗床泼浇,或移栽前用68.75%氟吡菌胺.霜霉威SC 17 187.5 g/hm2灌根或泼浇;移栽后大田发病初期用68.75%氟吡菌胺.霜霉威SC 773.44~1 031.25 g/hm2喷淋茎基部或喷雾,间隔7 d施药一次,可连喷2~3次。[结论]该研究为辣椒疫病的防治提供了科学依据。
[Objective] The research aimed to determine the control efficacy and safety of 68.75% fluopicolide propamocarb SC on pepper blight in different periods. [Method] With Zhongjiao 7 as test material and pepper blight as control object, the effects of several pesticides applied in different application periods on the control of pepper blight were studied. [Result] 68.75% of fluopicolide, propamocarb SC had good control effect on pepper blight, and it was safe and harmless to pepper in the test dose. Pharmacy different application period, the prevention and treatment of pepper blight different effects, the best way is to seedling and field transplanting spray combination. It is recommended that 72.2% of propamocarb hydrochloride AS 43 320 g / hm 2 seedbed be sprinkled at the seedling stage or 68.75% of the fluopicolide prior to transplanting. The propamocarb SC 17 187.5 g / hm 2 should be irrigated or sprinkled; In the early stage after transplanting, 68.75% of fluopicolide should be used, spraying propionate SC 773.44 ~ 1 031.25 g / hm2 at the base or spray of spraying stem, spraying once every 7 days, spraying 2 or 3 times in a row. [Conclusion] The research provided the scientific basis for the prevention and cure of pepper blight.