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    苦瓜病蟲害高清圖譜

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    發(fā)布時(shí)間: 2017-2-22 15:15

    正文摘要:

    苦瓜病毒病在各生育期都發(fā)生。幼苗染病,葉片皺縮,生長(zhǎng)點(diǎn)畸形,發(fā)育速度緩慢,重病苗不到移栽期就逐漸壞死萎蔫。大苗染病,地上部幼嫩部位癥狀明顯,葉片變小、皺縮,節(jié)間縮短,植株矮化,有時(shí)病株表現(xiàn)花葉,一般不 ...

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