黑尾叶蝉 Nephotettix apicaliscincticepsUhler是我国最重要的水稻害虫之一。近年来,浙江省許多地区該虫数量不断上升,为害日趋严重,对生产威胁很大。为探明其卵期天敌資源,曾于1965年7月下旬和8月初在浙江龙泉、溫州和黃岩三地采卵考查寄生蜂的种类和寄生率,现将初步結果整理于后,供参考。一、采集和考查方法采集时期在7月下旬和8月初,当时田間已有一个月以上未用过任何药剂。 Nephotettix apicaliscincticepsUhler is one of the most important rice pests in our country. In recent years, the number of pests in many areas of Zhejiang Province has been on the rise, becoming more and more serious and threatening the production. In order to find out the resources of its natural enemies during the egg period, the species and the parasitism rate of parasitoids were surveyed by ovum collection in Longquan, Wenzhou and Huangyan in Zhejiang in late July and early August 1965. The preliminary results are arranged for reference later. First, the collection and examination methods Collection period in late July and early August, when the field has been more than a month without any medication.