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在广西靖西县开展了上部烟叶乙烯利处理和烘烤方法试验。结果表明,在靖西特殊情况下采用“低温慢烤”,可使上部烟叶顺利变黄,充分成熟......
Many environmental stress factors have been identified to increase square and boll abscission and thus result in reduced......