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稻纵卷叶螟,已成为我省水稻上的主要食叶性害虫,发生频率高,为害面积大,对水稻单产造成严重损失。同时,投入的农药也很多。由于大量使用化学农药,杀伤了大量天敌,严重破坏了生态平衡。为了解决这一问题,我们自1977年起结合对稻纵卷叶螟绒茧蜂寄生规律的观察,进行了稻纵卷叶螟绒茧蜂自然保护利用技术的研究,并取得了较理想的结果。现简介如下:
Rice leaf roller, has become the main rice leaf pests in our province, the occurrence of high frequency, damage to the area, causing serious losses of rice yield. At the same time, there are also many pesticides involved. Due to extensive use of chemical pesticides, killing a large number of natural enemies, seriously undermined the ecological balance. In order to solve this problem, we studied the parasitism of the Cnaphalocrocis medinalis in 1977 and studied the natural protection and utilization technology of the Cnaphalocrocis medinalis, and achieved satisfactory results . The brief introduction is as follows: