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Leaf fall The shedding of leaves , usually associated with a fall in AUXIN concentration.
落叶:即树叶的脱落, 常伴植物激素浓度的降低.
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The effect of leaf fall decomposition for 8 tree species on soil microorganisms was studied.
研究了8个树种凋落叶分解对土壤微生物数量和组成的影响.
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Leaf fall showed more severe in medium with peat and perlite combination.
后期落叶以泥炭与珍珠岩的配比较为严重.
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It is there in the green grass of Summer. It is there in the last leaf of Fall.
爱在冬日冷风迎面，春日初花绽放，夏日绿草如茵，秋日孤叶凋零。
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此园一年四季彩叶缤纷，尤其在秋高气爽之时，漫步园中，那红彤彤、黄澄澄的秋叶秋果更是美不胜收。
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