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当前位置: 首页 > 文章 > 水保措施对红壤旱地团聚体及其特性的影响 土壤通报 2014,45 (4) 961-965
Position: Home > Articles > Effects of Water and soil conservation measures on Soil Aggregate and its Characteristics in Red Soil Chinese Journal of Soil Science 2014,45 (4) 961-965

水保措施对红壤旱地团聚体及其特性的影响

作  者：
钟义军;黄欠如;武琳;叶川;成艳红;孙永明;章新亮
单  位：
江西省红壤研究所
关键词：
水保措施;红壤旱地;团聚体;地表径流;土壤侵蚀量
摘  要：
研究了水土保持措施对红壤荒坡旱地土壤机械组成、团聚体及其特性的影响,分析了水稳团聚体及其特性与土壤侵蚀量、地表径流和花生产量的相关关系。结果表明:(1)水土流失主要引起红壤旱地粘粒部分流失,水保措施能减少12.67~24.40%的粘粒流失;(2)与CK相比,水保措施>1 mm风干团聚体和>0.5 mm水稳团聚体含量增加,团聚体分形维数(CFD)、稳定性指数(ASI)和平均重量直径(MWD)均显著升高,升高的幅度分别为0.38~0.76%、1.44~2.88%、15.50~18.75%;(3)土壤侵蚀量和地表径流与>2 mm、1~2 mm粒级的水稳团聚体呈极显著负相关(p<0.1),与0.25~0.5 mm粒级的水稳团聚体呈极显著正相关(p<0.1),花生产量与0.5~1 mm和<0.053 mm粒径的水稳团聚体显著负相关(p<0.5)。基于此,研究红壤旱地土壤团聚体及其特性可以指导红壤旱地水土保持研究工作。
译  名：
Effects of Water and soil conservation measures on Soil Aggregate and its Characteristics in Red Soil
作  者：
Zhong Yi-jun;Huang Qian-ru;Wu Lin;Ye Chuan;Cheng Yan-hong;Sun Yong-ming;Zhang Xin-liang;Red Soil Institute of Jiangxi Province;National Engineering and Technology Research Center for Red Soil Improvement;
关键词：
Water and soil conservation measures;;Red soil;;Soil aggregates;;Surface runoff;;Soil erosion
摘  要：
The effects of water and soil conservation measures on soil mechanical composition, soil aggregate and its characteristics in Red soil were studied. Moreover, the relationships among soil aggregate, its characteristics, surface runoff and soil erosion were also analyzed. The results indicated that:(1)Clay lost was mainly caused by soil erosion in red soil, but the measures of water and soil conservation could reduce 12.67% ~ 24.40% of clay loss;(2) Compared with CK, the contents of air-dried aggregates in the size of > 1 mm and water-stable aggregate in the size of > 1 mm were increased by water and soil conservation measures. Meanwhile, the fractal dimension D(CFD), stability index(ASI) and mean weight diameter(MWD) of soil aggregates were significantly increased with the proportion of 0.38%-0.76%, 1.44%- 2.88% and 15.50%- 18.75% respectively;(3) Water-stable aggregates in the sizes of > 2 mm and 1- 2mm were extremely significantly negatively correlated(p < 0.1) with surface runoff and soil erosion. Whereas they in the size of 0.25- 0.5 mm was significantly positively correlated(p < 0.1) with surface runoff and soil erosion. In addition, peanut yield was significantly negatively correlated(p < 0.5) with water stable aggregate in the sizes of <0.053 mm and 0.5- 1 mm. Based on this, the soil aggregate and its characteristics can guide water conservation work in the dryland of red soil.

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