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防治梨木虱的5个关键时期

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摘要 近年来,我县梨树梨木虱危害逐年加重,已成为梨产区第一大虫害.梨木虱不但世代多,繁殖能力也很强,而且世代交替多代并存.成虫善飞,体表有蜡层,若虫分泌黏液,天敌数量较少,防治难度大,特别是干旱年份危害猖獗,给梨农造成很大损失.根据多年经验,防治梨木虱应抓住5个关键时期.
出处 《河北果树》 2014年第2期39-40,共2页 Hebei Fruits
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