稻纵卷叶螟的初期幼虫很难找,往往要到结新虫苞时才能发现;有的把新虫苞的多少,作为“防治指标”,很容易贻误战机。 近三年来,我们在反复多次的调查实践中,发现稻纵卷叶螟在 The early larvae of C. medinalis are hard to find and tend to be found when they reach new cocooning buds. Some of these new cocoon buds can easily be used as a “prevention and control index” and can easily lead to the loss of fighter jets. In the past three years, we have repeatedly found in the survey practice that C. medinalis is present