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Solonchak
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Solonchak
Encyclopedia
农学
盐土
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Solonchak
盐土
表层(0~30厘米)中含盐量超过6~20克/千克已形成明显积盐层的土壤。氯化物盐土含盐量下限为6克/千克,氯化物-硫酸盐和硫酸盐-氯化物盐土为10克/千克,硫酸盐盐土的积盐下限为20克/千克。在中国土壤分类暂行草案(1978)及全国第二次土壤普查(1988)中,列为盐成土纲、盐土土类;在中国土壤系统分类(2001)中,相当于正常盐成土[注];在美国土壤系统分类中,部分相当于积盐干旱土[注]、含盐潮湿始成土[注];在世界土壤资源参比基础(2013)中,部分相当于盐土[注]。
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bounded characteristic
bounded closed set
bounded closure
bounded cohomology
bounded complete statistic
bounded complete sufficient statistic
bounded complex
bounded convergence
bounded convergence theorem
bounded convergence topology
bounded curvature
bounded degree
bounded depth first search
bounded derivative
bounded derived category
bounded distance decoding
bounded distortion
bounded domain
bounded downwards
bounded element
bounded error probabilistic polynomial time class BPP
bounded error quantum polynomial time
bounded error quantum polynomial time class BQP
bounded estimator method
bounded existential quantifier
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