20%寡聚酸碘水剂对黄瓜灰霉病的药效试验

20%寡聚酸碘水剂（AS）的有效成分为氨基寡糖素与碘的络合物，采用室内生物活性测定及田间药效试验，以50%乙烯菌核利可湿性粉剂（WP）1 000倍液为对照药剂，评价了20%寡聚酸碘AS对黄瓜灰霉病的防治效果。室内抑菌试验结果表明：20%寡聚酸碘AS 1 000倍液、1 500倍液、2 000倍液的抑菌率分别为97.30%、45.90%、14.00%，均低于50%乙烯菌核利WP 1 000倍液（100.00%）。田间药效试验结果表明：20%寡聚酸碘AS 1 000倍液、1 500倍液的田间防效分别为81.66%、74.80%，均高于50%乙烯菌核利WP 1 000倍液（73.87%）。

Effect Test of 20% Iodine Oligosaccharide Acids Agent on Cucumber Gray Mold(Botrytis cinerea)

The effective component of 20% iodine oligosaccharide acids agent(AS)is the complex of chitin oligosaccharide and iodine.The antifungal effect of 20% iodine oligosaccharide acids AS against cucumber gray mold(Botrytis cinerea)was tested by allied toxicity measurement and field efficacy trials.The results showed that the bacteriostat ratios of 20% iodine oligosaccharide acids AS diluted 1 000 times,1 500 times,2 000 times were 97.30%,45.90%,14.00%,respectively,which were all lower than that of the 50% vinclzolin WP diluted 1 000 times(100.00%).The field control effects of 20% iodine oligosaccharide acids AS diluted 1 000 times,1 500 times were 81.66%、74.80%,respectively,which were all higher than that of the 50% vinclzolin WP diluted 1 000 times(73.87%).