论文部分内容阅读
朱砂叶螨是怀地黄生长期的重要害虫,该虫在三门峡地区每年发生13～15代,怀地黄田每年5～10月均可受害,且有2次发生高峰期,6月中下旬为第1次高峰期,8月中下旬为第2次高峰期。温度、降雨和前茬作物种类是影响朱砂叶螨种群数量的主要因子。受朱砂叶螨危害的怀地黄螨株率达100%,有18.92%～23.47%的植株因受其危害而干枯死亡,一般田块红叶率高达36.27%～49.13%,田块产量损失10%～15%,受害地黄块茎变小,表皮粗糙,药性降低。试验结果证明：15%哒螨灵、50%宝路可湿性粉剂、10%浏阳霉素、3%莫比朗、2.5%菜喜、1.8%阿维菌素对朱砂叶螨具有良好的防治效果。
Tetranychus cinnabarinus is an important pest in the growth of Rehmannia glutinosa, which occurs 13 to 15 generations per year in Sanmenxia area, 5 to October in Huangtian of Huilai County, and may have a peak in 2 times and a mid- The first peak, the second peak in late August for the second peak. Temperature, rainfall and stubble crop species are the main factors affecting the population of Tetranychus cinnabarinus. The rate of Rehmannia glutinosae mites which were endangered by Tetranychus cinnabarinus was 100%, and 18.92% ~ 23.47% plants died due to their damage. The average rate of red leaves in field was 36.27% -49.13%, and the yield of field was 10% 15%, yellow patch of affected land becomes smaller, rough skin, reduce the drug. The test results show that 15% pyridaben, 50% Po Road WP, 10% Liuyangmycin, 3% Mobillang, 2.5% Caixi, 1.8% Abamectin has good control effect on Tetranychus cinnabarinus .