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天牛危害菠萝蜜的症状是什么?

faburiqi: 2018-09-04 21:02

问:
天牛危害菠萝蜜的症状是什么?

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er、sanglijiantianniu: sanglijiantianniu2-3nianwancheng1dai,yiyouchongzaishuganneiyuedong。youchongjingguo2gedongtian,zaidi3nian6-7yuejian,laoshuyouchongzaisuidao,changkedaozhigankusiwang。

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