【摘要】 本文对美洲斑潜蝇监测技术、消长动态以及化学防治进行了研究.结果表明,幼虫系统调查法能很好地反映田间的实际发生情况,是一种可靠的监测方法;从三季豇豆及一季丝瓜上美洲斑潜蝇发生为害情况看,8月上、中旬和9月中旬～10月中旬是盛发期,其中9月中旬～10月中旬为害最严重,而7月底之前和10月下旬之后,虫口密度均处于较低水平;田间药剂防治试验结果表明,绿菜宝(1000倍液)、爱福丁(1500倍液)等药剂效果较好,持效期也较长,药后7天防效分别为90.2%、87.7%,其他三种较差.更多还原

【Abstract】 The monitor methods, population dynamics and chemical control of leaf miner, L. sativae Blanchard, were studied. The systematic investigation of larvae was an effective and reliable monitor method. It could reflect the real occurring situation of L. sativae in fields. According to the occurrence of L. sativae on cowpea in the full year 1988 and on towel gourd from May to August, the peak periods were on the first twenty days of August and from the second ten days of September to middle October. And the quantity of L. sativae was in the lower level before the end of July and after the end of October. The field experiment of chemical control revealed that, Lucaibao and Abamectin had better effect with longer duration, and the control effect of them could up to 90. 2 and 87. 8% after seven days of spraying, and the other three insecticides were less effective.更多还原