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grassland reclamation
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grassland reclamation
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中国草业史
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grassland reclamation
草地开垦
人为采取工程措施、生物措施或综合措施开发草地资源,使其改造成为以种植、养殖为主的农用土地类型的社会生产实践活动。
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更新时间:2024/12/25 3:02:24