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由于近年来红铃虫在浙江棉区为害棉花仍然猖獗,我们曾于1962年在浙江萧山县着重研究影响越冬红铃虫化蛹、羽化的主要因素,以备为防治棉花红铃虫提供技术措施。现将研究所得,讨论于后。材料和方法于1961年冬季采集草舍仓库、瓦房仓库和棉稭枯铃里的红铃虫各100头,分置于小指管内。每管放虫一头,管口用棉花塞紧,而后放人26.49℃的恒温箱内,逐日观察记载其化蛹、羽化进度,以比较来自不同处所的红铃虫在相同温度下的发育速度。同时分期采集上述各处所的越冬红铃虫,每期各取样50头进行脂
As in recent years, pink bollworm cotton in Zhejiang cotton area is still rampant, we have in 1962 in Xiaoshan County, Zhejiang Province focused on the impact of winter red bollworm pupation, emergence of the main factors in preparation for the prevention and control of cotton bollworm provide technical measures . The present study will be discussed later. Materials and Methods In the winter of 1961, we collected 100 grass-beethouses, 100 wrasses of Wafangdian and cotton bollworm beetle, respectively. Each tube put a worm, the mouth with cotton plug, and then placed in a 26.49 ℃ incubator, daily observation of its pupation, eclosion progress to compare the pink bollworm from different locations at the same temperature and speed of development. At the same time, the above-mentioned places were collected by staging the red-bellied Beetle, each sampling 50 fat