共查询到20条相似文献,搜索用时 15 毫秒
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《Agriculture, ecosystems & environment》1987,20(1):71-74
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《Agriculture, ecosystems & environment》1988,24(4):461-462
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《Agriculture, ecosystems & environment》1988,24(4):459-460
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《Agriculture, ecosystems & environment》1988,24(4):460-461
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1 Materialsandmethods1.1 ClayandchemicalsTheclayusedwasamontmorilloniteSwy2fromCrookCounty,Wyoming,andwaspurchasedfromtheSourceClayMineralsRepositoryatUniversityofMissouri,Columbia,MO.The<2μmfractionwasobtainedbysedimentation.Na+,K+,Mg2+andCa2+saturatedclayswe… 相似文献
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《Agriculture, ecosystems & environment》1986,16(2):149-150
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《Agriculture, ecosystems & environment》1988,20(2):147-148