点击下载：华南农业大学：《农业生态学》课程教学课件（讲稿）Chapter 22 生态农业 Eco-agriculture
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This system has optimum composition, reasonable structure, coordinated relationships and balanced development.This system has optimum composition, reasonable structure, coordinated relationships and balanced development
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点击下载：华南农业大学：《农业生态学》课程教学课件（讲稿）Chapter 22 生态农业 Eco-agriculture
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