| 廖晓勇,罗承德,陈治谏,王海明,田道平.三峡库区坡耕地粮经果复合垄作对土壤水分特征的影响[J].干旱地区农业研究,2008,(5):75~79 |
| 三峡库区坡耕地粮经果复合垄作对土壤水分特征的影响 |
| Soil moisture character of agro-forestry and contour ridge tillage technique of slope cropland in Three Gorges Reservoir Area |
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| DOI：10.7606/j.issn.1000-7601.2008.05.16 |
| 中文关键词: 粮经果复合垄作 土壤水分特征 坡耕地 三峡库区 |
| 英文关键词:agro-foresty and contour ridge tillage technique soil moisture character slope cropland Three Gorges Reservoir |
| 基金项目:中科院成都山地所前沿项目（1100001007）；中科院西部行动计划项目（KZCX2-XB2-07）；国务院三建委办公室资助项目（SX2001-021） |
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| 中文摘要: |
| 减缓、减轻干旱的发生与危害是三峡库区坡耕地持续利用的关键。在坡度15°标准径流小区，以聚土垄作和农林复合为基本方法，营建坡耕地粮经果复合垄作模式，并对模式的土壤水分状况进行了长期定位观测。2002～2005连续4年试验结果表明，粮经果复合垄作能有效改善坡耕地土壤结构，利于土壤保持适宜的透水性和持水性，土壤有效库容扩大了145.2 m3·hm-2；同时，增加了土壤贮水，提高了贮水利用率，尤其是底层贮水利用率，比较平作对照，贮水库容和贮水利用率分别增大了5.73%、5.32%；此外，垄沟拦蓄了地表径流，减少径流损失达74.18％～95.81%，有利于降水入渗补给及旱季底墒的保护。 |
| 英文摘要: |
| Slope cropland plays an important role in the agricultural economy in the Three Gorges Reservoir Area, and its soil moisture losses and seasonal droughts bring a pressure on the sustainable development of agriculture. On the basis of contour tillage of wide ridge and furrow covering and agro-forestry, a mode is set up for compound ridge culture in slope cropland and a long-term observation is carried out on its moisture character in Wanzhou Eco-environment Station of the Chinese Academy of Sciences in 2002～2005. It was shown in the five years' experiment that this technique is effective in improving the soil physical character, reducing the soil moisture losses, increasing effective soil water content and raising the soil moisture availability coefficient. |
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