石硫合剂在黄瓜叶面病害防治中的应用  

Application of Lime-sulfur in Controlling Cucumber Foliage Diseases

作　　者：陈雪[1] 李宝聚[2] 傅俊范[1] 石延霞[2] 

机构地区：[1]沈阳农业大学植保学院植保系,辽宁沈阳110161 [2]中国农科院蔬菜花卉研究所

出　　处：《作物杂志》2008年第2期54-56,共3页Crops

基　　金：公益性行业(农业)科研专项经费项目(nyhyzx07-007);“十一五”国家科技支撑计划(2006BAD17B07)

摘　　要：研究了45%晶体石硫合剂对灰霉病等6种黄瓜叶面病害的防治效果。结果表明:石硫合剂100倍液对病害的防效较好,防效均在62%以上。石硫合剂对黄瓜褐斑病的防效最好,当浓度为400倍液时,防效也达50%以上;对水稻纹枯病防效较差,只有浓度为100倍液时,防效达60%以上,其他各浓度的防效均不理想。同时,本试验探讨了石硫合剂持效期与黄瓜灰霉病防治效果之间的关系,黄瓜苗在喷施200倍液石硫合剂之后立即接种灰霉病菌的效果较好,防治效果为45·6%。随着接种间隔期的延长,防效逐渐降低。当接种间隔期为120h时,石硫合剂对黄瓜灰霉病无防治效果。Effect of 45% lime-sulfur on six cucumber foliage diseases were investigated. The results showed that 100 times lime-sulfur gave an effective control of the diseases, with the control efficiency of above 62%. The effect of lime-sulfur against the disease which was caused by Corynespora cassiicola on cucumber was best when the concentration was 400 times, the control efficiency reached above 50%. Lime-sulfur had a poor effect on the disease caused by Rhizoctonia solani, only when the concentration was 100 times, with the control efficiency of above 60%. The control effect of other treatments on rice sheath blight were poor. The relationship between the persistent period and the control effect of 200 times lime-sulfur on cucumber gray mold was also analyzed. It was found that the best control effect was obtained when the application interval was Oh, with the efficiency reaching 45.6%. With the increase of application intervals, the control efficiency gradually reduced. Application at 120h intervals had no effect on cucumber gray mold.

关 键 词：石硫合剂 黄瓜叶面病害 防治效果 

分 类 号：S436.421[农业科学—农业昆虫与害虫防治]