So,it is an emergent problem to grade the herbicide phytotoxicity and study on the relation between the different degree damage and the loss of yield.
英
美
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為此對除草劑藥害進(jìn)行分級并研究判斷不同級別藥害與產(chǎn)量損失之間的關(guān)系也就成為當前農藥專(zhuān)家們亟待解決的問(wèn)題。
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国内精品美女A∨在线播放xuan