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一、前言黑尾叶蝉是水稻的重要害虫。防治病虫为害是夺取农业丰收的重要环节。用化学农药是防病治虫的重要措施。但长期使用化学农药,使黑尾叶蝉等许多害虫产生了抗性,同时也污染了环境。因此,寻求更为合理的防治方法已提到议事日程上来了。头蝇为黑尾叶蝉若虫的寄生天敌之一。为此,我们观察研究了头蝇。此虫一年发生4～5代,以幼虫在黑尾叶蝉若虫体内越冬,越冬幼虫4月中下旬离开寄主化蛹,5月上中旬羽化为成
I. Introduction The black-leafhopper is an important pest of rice. Prevention and control of pests and diseases is an important part of agricultural harvest. Using chemical pesticides is an important measure to prevent diseases and pests. However, long-term use of chemical pesticides, so many leafhoppers and other pests have resistance, but also pollute the environment. Therefore, the search for a more reasonable prevention and control method has been mentioned on the agenda. The head fly is one of the parasitic natural enemies of black-tailed leafhopper nymphs. To this end, we observed the head flies. The pest occurs 4 to 5 generations a year, with larvae in the black tail cicada nymphs overwintering, overwintering larvae in April to leave the host pupation in mid-May to emerge into the mid