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seasonal grazing production systems
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seasonal grazing production systems
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农学
季节畜牧业
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seasonal grazing production systems
季节畜牧业
根据牧草和家畜生长、繁殖等生物学特性和社会需求,在牧草再生长性能变差或丧失、质量变坏的季节来临之前,有计划地出栏家畜,保持适度的基础畜群,以降低草地放牧压力,避免家畜生产损失的产业。
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Coiba National Park and its Special Zone of Marine Protection
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