常見(jiàn)例句

• (2) by spraying defoliant to control second instar larva, all the defoliants with 3 different concentrations could control the insects indirectly, and the effectiveness was as high as 95%;
  通過(guò)施用脫葉劑處理葉片的方法來(lái)防治2齡若蟲(chóng)，試驗(yàn)所設(shè)3種濃度的脫葉劑均能間接起到防治作用，其效果均達(dá)到了95%25以上。
返回 Defoliants