| 退耕地表层土壤理化性质及酶活性变化特征 |
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| 引用本文： | 郑子成,王永东,李廷轩,张锡洲,吴德勇. 退耕地表层土壤理化性质及酶活性变化特征[J]. 水土保持研究, 2010, 17(3): 208-211,284 |
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| 作者姓名： | 郑子成 王永东 李廷轩 张锡洲 吴德勇 |
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| 作者单位： | 四川农业大学 资源环境学院, 四川 雅安 625014 |
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| 基金项目： | 国家自然科学基金，四川省教育厅重点项目，四川省科技厅应用基础项目，地表过程与资源生态国家重点实验室开放基金，中国科学院山地灾害与地表过程重点实验室开放研究基金 |
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| 摘 要： | 采用野外调查及室内试验相结合的方法，就退耕地土壤理化性质及酶活性特征进行了研究。结果表明:（1）土壤各粒级含量均表现为粉黏粒＞物理性黏粒＞黏粒，其中枇杷园三种粒级含量均高于其它退耕地。（2）土壤有机质的含量表现为杉树人工林＞桉树人工林＞枇杷园＞茶园＞撂荒地；土壤阳离子交换量表现为桉树人工林＞枇杷园＞茶园＞撂荒地＞杉树人工林，且不同退耕地间差异不显著；全氮含量表现为撂荒地＞枇杷园＞茶园≥桉树人工林＞杉树人工林；全磷含量表现为杉树人工林＞茶园＞撂荒地＞枇杷园＞桉树人工林；土壤全钾含量表现为枇杷园＞桉树人工林＞茶园＞撂荒地＞杉木人工林。（3）过氧化氢酶活性表现为杉树人工林＞撂荒地＞枇杷园＞茶园＞桉树人工林；撂荒地和枇杷园脲酶的活性较高，撂荒地和枇杷园的差异达极显著水平；撂荒地碱性磷酸酶的活性最高，茶园碱性磷酸酶的活性最低；酸性磷酸酶的活性表现为杉树人工林＞桉树人工林＞枇杷园＞撂荒地＞茶园。（4）土壤质量综合指数的变化趋势表现为杉木人工林＞桉树人工林＞茶园＞枇杷园＞撂荒地。
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| 关 键 词： | 土壤机械组成 土壤化学性质 土壤酶活性 退耕地 |
Research on Soil Physical and Chemical Properties and Enzyme Activity of Abandoned Cropland |
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| ZHENG Zi-cheng,WANG Yong-dong,LI Ting-xuan,ZHANG Xi-zhou,WU De-yong. Research on Soil Physical and Chemical Properties and Enzyme Activity of Abandoned Cropland[J]. Research of Soil and Water Conservation, 2010, 17(3): 208-211,284 |
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| Authors: | ZHENG Zi-cheng WANG Yong-dong LI Ting-xuan ZHANG Xi-zhou WU De-yong |
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| Affiliation: | College of Resources and Environment, Sichuan Agriculture University, Ya’an, Sichuan 625014, China |
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| Abstract: | By the method of field investigation and laboratory analysis, the characteristics of soil physical-chemical properties and enzyme activity were studied to the abandoned cropland. The results showed that: (1) The content of soil grain grade ranking from small amount to much was powder viscous grain>physical viscous grain>viscous grain, and the amount of the three kinds of grain in the loquat garden were all more than those under the other conditions. (2) The content of soil organic matter rank was fir plantation>eucalyptus plantation>loquat garden>tea garden>abandoned land. The cation exchange capacity was eucalyptus plantation>loquat garden>tea garden>abandoned land>fir plantation, but there were no significant differences between different land uses. The total nitrogen content ranking from small amount to much was abandoned land>loquat garden>tea garden≥fir plantation>eucalyptus plantation, the total phosphorus content rank was fir plantation>tea garden>abandoned land>loquat garden>eucalyptus plantation, the total potassium content rank was loquat garden>eucalyptus plantation>tea garden>abandoned land>fir plantation. (3) The activity of catalase ranking from strong to the weak was fir plantation>abandoned land>loquat garden>tea garden>eucalyptus plantation. The activity of urease in abandoned land and loquat garden was stronger, and the differences between the two were very obvious. The activity of alkaline phosphatase in abandoned land was the strongest while the tea garden’s was the weakest, and the activity of the acidic phosphatase rank was fir plantation>eucalyptus plantation>loquat garden>abandoned land>tea garden. (4) The change trend of soil quality comprehensive index was fir plantation>eucalyptus plantation>tea garden>loquat garden>abandoned land. |
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| Keywords: | soil particle size distribution soil chemical properties soil enzyme activity abandoned cropland |
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