药剂处理土壤防治龙胆苗期病害的研究

Studies on the soil treated by the germicides for preventing the disease of gentian at the seedling stage

目的 :防治龙胆苗期病害。方法 :于播种前以不同浓度的甲基托布津、多抗霉素、杀毒矾、百菌清喷施于育苗床上 ,用量为 3kg m2 ,播种后 30d和 12 0d调查保苗数。结果 :保苗效果最好的为多菌灵 5 0 0倍液 ,其次为多菌灵 6 0 0倍液、多菌灵 70 0倍液、百菌清 5 0 0倍液、百菌清 6 0 0倍液 ,其保苗数大于 5 0 0 0株 m2 。结论 :采用土壤药剂处理能防治龙胆苗期病害 ,保苗数达到生产要求。

Objective:To prevent the disease of gentian at the seedling stage.Method: Spraid thiophanate-mmethylthiram, polyoxin,oxadixyl-mancozeb,chlorothalonil at diferent concentration on seedling bed before seeding in order to prevent the occurrence of disease of gentian at the seedling stage,the using amount was 3kg/m 2.Results: Carbendaxol(1:500)had the best effect of keeping seedling carbendaxol(1:600),carbendaxol(1:700)L chlorothalonikl(1:500)and chlorothalonil(1:600)were less effective, the amount of keeping seedling was 5000 plant/m 2.Conclusion:Spraid gemicides on soil could prevent the disease of gentian at the seedling stage,the amount of keeping seedling conformed with the standard of production.