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宫川蜜柑根际土壤酶活性与土壤养分含量相关性的研究
李洁荣;邓业成;叶家颖;杨林林
1.广西师范大学生物系;2.广西师范大学生物系 广西桂林541004;3.广西桂林541004
摘要:
研究了不同肥力水平的宫川蜜柑根际土壤酶的活性及其与土壤农化特性的关系。结果表明 :高产园的土壤酶活性显著高于低产园的土壤酶活性。经统计分析 ,土壤酶活性与养分含量均呈极显著相关。而且酶的活性在土壤中的分布有一定的规律性。其水平分布是在树冠内半径的 4 /5处至树冠滴水线范围内 ,酶的活性最高 ,由此处向内向外酶的活性逐渐降低 ;其垂直分布是 0~ 2 0 cm土层酶的活性最高 ,随土层的加深而逐渐降低
关键词:  宫川蜜柑    根际    土壤酶活性    养分含量    相关性    分布规律
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