论文部分内容阅读
一、对成虫的防效盲蝽象:一代成虫盛发期内,在蚕豆麦夹作田,傍晚撒敌敌畏毒土于行内,用药量分0.5,1,1.5两三个处理,结果1两和1.5两的杀虫效果均为100%.调查群众大面积撒药防治效果也在70%以上.棉铃虫:将蛾子装入10×20厘米的养虫笼内,每笼30头,在傍晚分上、中、下三层置于棉株间,连片使用敌敌畏毒土(1～2两)熏蒸,以不熏蒸为对照.结果两个处理区棉铃虫全部死亡;对照区上、中、下三层活蛾分别为20,30和16头.处理区的校正死亡率为100%.大面积毒土熏蒸防治红铃虫时也曾多次拾到棉铃虫死蛾.
First, the adult effect of the anti-blight like bugs: a generation of adult Sheng period, in the field of wheat and wheat clip for the field, evening dichlorvos poison soil in the line, the dosage of 0.5,1,1.5 two or three treatment, the results of a two and 1.5 Insecticidal effect of the two are 100% of the population survey large-scale drug control effect is also above 70% .Worm bollworm: the moths into 10 × 20 cm cage of cages, 30 per cage, in the evening , The middle and lower three layers were placed in cotton plants, contiguous use of dichlorvos toxic soil (1 ~ 2 two) fumigation, not fumigation as a control.Results The two treatment areas all bollworm dead; control area, middle and lower three Layer live moths were 20, 30 and 16, respectively, and the corrected mortality rate in the treatment area was 100%. Large numbers of deadly moths were also found on large numbers of fumigant fumigants against Helicoverpa armigera.