论文部分内容阅读
秋千毛虫一年发生一代,以卵态越冬。由于采取早春刮卵块集中烧毁的办法,刮时不易彻底,因而效果不理想,近年来我们采用药剂封闭卵块,封闭一次者杀虫率达97%,封闭二次者可达100%。具体做法:4月下旬开始逐日观察,待发现秋千毛虫卵即将孵化时(一般卵粒出现黑头,大约5月1日前后)。用蘸有200倍“1605”或敌百虫溶液(配药时加少许洗衣粉以增加展着作用)的毛刷涂抹卵块,杀死初孵幼虫。涂抹时轻轻拍打使药液将卵块上部覆盖的淡黄色
Swipe caterpillars occur a generation a year, overwintering with oyster. As a result of early spring scraping eggs concentrated burning method, the scratch is not easy, so the effect is not satisfactory, in recent years we use the drug to close the egg, closed one insecticidal rate of 97%, twice closed up to 100%. Specific practices: Daily observation started in late April, to be found when the swing caterpillar eggs will hatch (usually oval blackheads, around May 1). The newly hatched larvae are killed by painting the egg blocks with a brush moistened with 200 times the “1605” or trichlorfon solution (adding a little washing powder to increase the spreading effect when dispensing). Apply lightly to make the liquid will cover the upper part of the egg yellow light yellow