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中文摘要：
以裸地为对照,研究紫色土区坡耕地不同种植模式对土壤渗透性的影响.结果表明：6种种植模式土壤渗透性表现为枇杷〉柠檬〉香根草植物篱＋玉米〉新银合欢植物篱＋玉米〉黄花〉玉米〉裸地;各种植模式土壤渗透性均随土壤深度的增加而降低,土壤入渗特征值均表现为初始入渗率〉平均渗透率〉稳定入渗率;土壤渗透性与土壤非毛管孔隙、总孔隙度、初始含水率、有机质含量和土壤持水量呈显著正相关,与土壤容重呈显著负相关;通用经验模型对各种植模式土壤入渗过程的拟合效果最好,而Kostiakov方程不适于描述该流域土壤水分的入渗过程.
英文摘要：
Taking bare land as the control, this paper studied the effects of different planting modes on the soil permeability of sloping farmlands in purple soil area. For the test six planting modes, the soil permeability was in the order of Eriobotrya japonica 〉 Citrus limon 〉 Vetiveria zizanioides hedgerows ＋corn〉Leucaena leucocephala hedgerows ＋ corn 〉HemerocaUis fulva 〉 corn 〉 bare land, and decreased with increasing depth. The eigenvalues of soil infiltration were in the order of initial infil- tration rate〉average infiltration rate 〉 stable infiltration r~ite. The soil permeability had significant positive linear correlations with soil total porosity, non-capillary porosity, initial moisture content, water holding capacity, and organic matter content, and significant negative linear correlation with soil bulk density. The common empirical infiltration model could well fit the soil moisture infiltration processes under the six planting modes, while the Kostiakov equation could not.
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同项目期刊论文
Effects of Cultivation and Vegetation Coverage on Soil Organic Carbon under Water Erosion in Regions
Effects of Hedgerow on Soil Fractal Characteristics and Erodibility of Sloping Farmland in the Purpl
Effects of Slopes and Rainfalls on Soil Organic Carbon under Water Erosion in Regions of Hilly Purpl
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