【摘要】 为有效防治落叶松球蚜对红皮云杉的危害,利用20%吡虫啉可溶性粉剂,以有效成分600 g·hm^-2、750 g·hm^-2、900 g·hm^-2、1 200 g·hm^-2剂量地下实施,其防治效果比较明显,在61. 11%～94. 44%,红皮云杉苗木生长安全。建议使用吡虫啉有效成分600 g·hm^-2用于生产防治。更多还原

【Abstract】 In order to effectively prevent the damage of Adelges laricis to Picea koraiensis,20 % imidacloprid soluble powder was used,with active ingredients 600 g·hm^-2,750 g·hm^-2,900 g·hm^-2,1 200 g·hm^-2 dose were applied underground. The control effect was obvious,61. 11 % ～ 94. 44 %. The growth of Picea koraiensis seedlings were safe. It was recommended to use imidacloprid active ingredient 600 g·hm^-2 for production control.更多还原