四川紫色土旱地退化及其防治
文献类型：期刊论文
| 作者 | 郭永明; 汤宗祥 |
| 刊名 | 山地研究
 |
| 出版日期 | 1993 |
| 卷号 | 11期号:4页码:216-222 |
| 关键词 | 四川 紫色土 旱地 退化 |
| ISSN号 | 1008-2786 |
| 其他题名 | DEGRADATION OF PURPLE SOILS FROM UPLAND FIELDS IN SICHUAN PROVINCE AND ITS CONTROL |
| 通讯作者 | 郭永明 |
| 合作状况 | 其它 |
| 中文摘要 | 四川紫色土旱地面积406.1万公顷,其中37％是紫色土退化严重的低产地,40％是紫色土退化较轻至中等的中产地,23％才是紫色土未退化的高产地。紫色土退化主要由于利用不当,缺乏应有的保护所造成。退化的防治措施有:改善农田生态环境,增加投入,增施有机肥,采取水土保持耕作法等。 |
| 英文摘要 | The upland area of purple soils in Sichuan is 406. 1 ×104ha,occupying more than 60% of whole province, in which 37% of purple soils degrades seriously into low-yield field, 40% degrades lightly into middle-yield field and 23% is high-yield field without degradation.The degradation characteristics of the purple soils are:1. the soil layer getting thin; 2. the fine soil grains getting coarse; 3. the soil chemical and physical properties worsing;4. the capacity of soil water and fertility storage and the resistance to soil degradation reducing; 5. the loss of soil nutrient blance and the soil pollution resulting in the decrease of soil fertility.The causers resulting in purple soil degradation are:1. over-reclamation: 2. much employment and less protection ;3. improper applying of the chemical fertilizer;4.extensive cultivation.According to the characteristics and the causes of purple soil degradation, the purple soil upland may be classified into 6 types;i. e. : 1. the type of reduction in storage capacity of the soil water and fertility; 2. the type of poor soil nutrient; 3. the type of bad chemical and physical properities; 4. the type of polluating form poisonous substances; 5. the type of soil layer lessen and the land surface fossilated;6. field emploied by no planting.The protection measures of the purple soil degradation are . 1. improving the ecological environment of the field;2. increasing investment in the fields;3. increasing utilization of organic fertilizer; 4. adapting the measures of conserving water and soil. |
| 学科主题 | 土壤学 |
| 收录类别 | CSCD ; 北大中文核心 |
| 语种 | 中文 |
| CSCD记录号 | CSCD:213182 |
| 公开日期 | 2011-08-08 |
| 源URL | [http://192.168.143.20:8080/handle/131551/3321]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） |
| 作者单位 | 中国科学院、水利部成都山地灾害与环境研究所 |
| 推荐引用方式 GB/T 7714 | 郭永明,汤宗祥. 四川紫色土旱地退化及其防治[J]. 山地研究,1993,11(4):216-222. |
| APA | 郭永明,&汤宗祥.(1993).四川紫色土旱地退化及其防治.山地研究,11(4),216-222. |
| MLA | 郭永明,et al."四川紫色土旱地退化及其防治".山地研究 11.4(1993):216-222. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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