ND—901、ND—903杀菌混剂防治大棚黄瓜霜霉病的研究  

Study on Efficacy of Systemic and Contact Fungicide Mixtures (ND─901,ND─903)in Controlling Downy Mildew of Plastic Greenhouse Cucumbers

作　　者：范志先[1] 宋述尧[1] 张成文[1] 张浩[1] 许允成[1] 吕月星 朱海翰 

机构地区：[1]吉林农业大学,吉林省植保站,北京东北旺农场科技站

出　　处：《吉林农业大学学报》1994年第1期34-40,共7页Journal of Jilin Agricultural University

基　　金：吉林省青年科学技术基金资助

摘　　要：用载玻片萌发法测定了混剂的室内毒力，共毒系数ＮＤ─９０１为２０８．１４，ＮＤ—９０３为２４３．１３，表明具有一定程度的增效作用．大棚试验结果表明，无论在防效还是增产方面，混剂比单用保护或内吸性杀菌剂都具有明显的优点。小区试验ＮＤ─９０１和ＮＤ─９０３的防效分别比三乙膦酸铝高１０．９８％和２４．２８％，增产２２．２％和４０．５％．ＮＤ─９０１国内多点示范推广防病增产效果都很好。此外，还测定了混剂的急性口服毒性（大白鼠ＬＤ５０ＮＤ—９０１为１４７００ｍｇ／ｋｇ，ＮＤ─９０３为１２６００～１３３００ｍｇ／ｋｇ）及ＮＤ─９０１在黄瓜上的残留动态．The mixture toxicities were tested by germination method on slide glass.CTC of ND901 and ND903 were 208.14 and 243.13, respectvely, indicating certain synergism. The mixtures, whether controlling effect or increasing production, obviously had more advantase than individuals. the effects of ND─901, ND903 were 10.98%, 24.28% and 22.2%, 40.5% higher than phosethyl─AL in plot experiments in plastic greenhouse, respectively. in addition,the toxicities of acute oral LD50 for rats were recorded as 14700mg/ks(ND─901), 12600─13300mg/kg(ND─903) and the residual dynamics of mancozeb in ND─901 in plastic house cucumbers evaluted.

关 键 词：黄瓜 霜霉病 杀菌混剂 防治 

分 类 号：S436.421.1[农业科学—农业昆虫与害虫防治]