| 蔡小艳1，邓素媛1，赖志强1，陈远荣2，易显凤1，姚 娜1，韦锦益1.山毛豆在岩溶区石漠化治理中的作用[J].广东农业科学,2016,43(11):78-85 |
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山毛豆在岩溶区石漠化治理中的作用 |
| Role of Tephrosia candida DC. in rocky desertification in Karst areas |
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| DOI：10.16768/j.issn.1004-874X.2016.11.012 |
| 中文关键词: 山毛豆 石漠化 土壤养分 微量元素 环境质量 |
| 英文关键词: Tephrosia candida DC. rocky desertification soil nutrients trace elements environmental
quality |
| 基金项目:广西水产畜牧科技推广应用项目（桂渔牧科201528033）；广西水产畜牧科技计划项目（桂渔牧科
1304558）；国家现代农业产业技术体系广西创新团队建设专项经费（nycytxgxcxtd-09-04）；广西科学技术厅“广西工
程研究技术中心组建”项目（2015GCZX014）；广西科学研究与技术开发计划项目（桂科合14125008-2-13） |
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| 中文摘要: |
| 为探讨山毛豆对岩溶区石漠化治理的作用，在广西凌云县典型的石漠化治理示范点阁楼村
和加尤镇，在椿树和板栗树林下种植山毛豆和合萌，以坡地种植山毛豆作对照，通过定点监测植被多样性
和土壤中养分的变化情况。结果显示，岩溶区种植山毛豆后第1 年，植被盖度达到20%～70%，第2 年提
高到95%～100%，水涵养性提高了3.85%～10.3%，野生物种有害数减少20%～30.7%，土壤有效氮提高
6.14%～14.61%，全磷提高23.02%～51.66%，全钾提高38.10%～45.24%，有机质提高6.28%；86.7% 的区域
土壤有机质属于中等及以上等级，必需微量元素Cu、Mn、Ni、Mo、Sn 等有益元素得到提高，有害金属元素
中除了Cr 外Pb、Ag、As、Hg 等均明显减少，其中Hg 由原来的三级标准提高到二级标准；阁楼对照区土壤
pH 值第2 年比第1 年降低6.47%～10.59%，而山毛豆种植区提高0.40%～6.63%。表明种植山毛豆可以提
高石漠化地区植被盖度，提高土壤水涵养性、有效氮和pH 值，可以减少野生有害物种的数量和土壤中有害
金属元素的含量，具有强大的保持水土和恢复生态环境的作用，可促进石漠化地区土壤和植被正向恢复的
演替。 |
| 英文摘要: |
| In order to understand the role of Tephrosia candida DC. in rocky desertification management in
Karst areas，we conducted the program in Gelou village and Jiayou town，typical pilot sites of rocky desertification
management in Guangxi，planted T. candida and Aeschynomene indica L. under Cedrela wood and Chestnut wood，
while planted T. candida on slope as control group，and detected the vegetation diversity and changes in soil
nutrients. The results showed that，by planting T. candida in Karst areas，the vegetation coverage reached 20%-70%
in the first year，and increased to 95%-100% in the second year；water conservation increased by 3.85%-10.3%；
harmful wild species in the second year decreased by 20%-30.7% over the first year；soil available nitrogen was
remarkable improved by 6.14%-14.61%，total phosphorus and potassium content increased by 23.02%-51.66% and
38.10%-45.24% respectively，organic matter raised by 6.28%，soil organic matter of 86.7% of the area belonged to medium and higher grade；essential trace elements in the soil，such as Cu，Mn，Ni，Mo，Sn content increased；
the harmful metal elements except Cr，Pb，Ag，As，Hg content decreased obviously，and Hg was taken to the
second standard from third standard；soil pH of Gelou village，the control group，in the second year decreased by
6.47%-10.59% over the first year，but that of T. candida area increased by 0.4%-6.63%. The result revealed that，
planting T. candida in rocky desertification area could increase vegetation coverage，improve soil available nitrogen
content，water conversation and soil pH，could decrease harmful wild species and harmful metal elements，played
a powerful role in soil conversation and renovating ecologic environment，facilitated positive evolution of soil and
vegetation in rocky desertification area. |
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