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2013-05-23 12:21
求翻译：Limestone generally increases earthworm populations and, in poor soils, nitrogen fertilizers may also benefit these indirectly. Most other mineral fertilizers have little effect on earthworm numbers, while organic matter such as manure, crop residues, or mulches favour earthworm multiplication by providing them with a 是什么意思？ 待解决
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Limestone generally increases earthworm populations and, in poor soils, nitrogen fertilizers may also benefit these indirectly. Most other mineral fertilizers have little effect on earthworm numbers, while organic matter such as manure, crop residues, or mulches favour earthworm multiplication by providing them with a
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