Field trials of two years demonstrated that 20% confidor SL was effective to control pear planthoppers.

为筛选高效低毒的农药新品种，进行了20％康福多SL防治梨木虱的试验研究。

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Field trials of two years demonstrated that 20% confidor SL was effective to control pear planthoppers.

为筛选高效低毒的农药新品种，进行了20％康福多SL防治梨木虱的试验研究。

youdao