苹果金纹细蛾近几年为害日趋严重,幼虫潜入叶肉为害形成很多虫斑。一片叶上有十几个虫斑,则叶片很快脱落,严重发生年份,在8月份叶片就会落光。 金纹细蛾在辽宁地区一年发生5代:4月中下旬为越冬代,6月上中旬为第一代,第二代在7月中旬发生,第三代在8月中旬,第四代在9月下旬, In recent years, the damage caused by apple golden moths has become more and more serious. The larvae infiltrated into the mesophyll to form many insect spots. A dozen leaves on a leaf spot, the leaves soon fall off, serious years, the leaves will fall in August light. The golden moth occurs in Liaoning Province in five generations a year: mid-to-late April for the winter, mid-June for the first generation, the second generation in mid-July, the third generation in mid-August, the fourth generation In late September,