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土壤化学改良
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土壤化学改良
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土壤改良
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soil chemical-melioration
土壤化学改良
通过化学方法来改良土壤成分、结构与化学特性,保持与提高土壤肥力,改善土壤农业化学指标,预防或减轻农业的负面影响的活动。
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anchor position survey
anchor ring
anchor slab retaining wall
anchor spray
anchor test
anchovies pelagic trawl fishing
anchovy
An Chung-Sik
An Chunru
ancient and famous tree
ancient and famous trees
ancient and famous trees in Beijing
ancient and famous trees in Shandong Province
Ancient and Modern Agriculture
Ancient and Modern Ci-Poetry
ancient and modern graphs
ancient and secondhand book industry in China
ancient Arab states
ancient astronomy
Ancient Babylonian Art
Ancient Babylonian Period
Ancient Ballads and Proverbs
ancient ballads and proverbs
ancient battlefield landscape
Ancient Bell Museum of Dazhong Temple
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