新栽梨树芽苗，有老师帮忙看下这是
新栽梨树芽苗，有老师帮忙看下这是不是病虫害，如果是如何防治https://appimg.guoyetong.com/pic/20200504/1588567759248468_261.jpg
https://appimg.guoyetong.com/pic/20200504/1588567759348364_801.jpg
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