Defoliants

常見例句

• (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%;
  通過施用脫葉劑處理葉片的方法來防治2齡若蟲，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。
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