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棉花的产量每年由于虫害造成的损失很大。当前防治害虫,主要是使用化学农药。棉田由于长期使用有机磷、有机氯等农药和加大药用量,使棉蚜、棉铃虫等害虫产生了抗性,并严重杀伤了天敌,导致棉田害虫发生严重,使害虫失去了自然控制,药品残毒污染环境,影响人体健康。要解决长期使用化学农药防治虫害所产生的一系列问题,研究生物防治是一项经济有效的新途径。为此,我所从1978年开始连续四年调查了棉田害虫天敌资源。通过四年的田间调查和室内饲养鉴定,基本摸清了石家庄地区棉田害虫天敌种类,已经鉴定的有242种,共11个目,61个科,列表如下:
The annual production of cotton due to pest damage is high. The current control pests, mainly the use of chemical pesticides. Due to the long-term use of pesticides such as organophosphorus and organochlorine in cotton field and the increase of medicinal amount, the cotton aphid and cotton bollworm have developed resistance and have seriously killed natural enemies. As a result, pests in the cotton field are seriously damaged, Drug residue poisoning the environment, affecting human health. To solve a series of problems arising from the long-term use of chemical pesticides to control pests, research on biological control is a new and effective way. For this reason, we have investigated the natural enemy resources of cotton pests for four consecutive years since 1978. Through four years of field investigation and indoor rearing identification, we basically found out the types of natural enemies of cotton pests in Shijiazhuang. 242 species have been identified, with 11 orders and 61 families. The list is as follows: