摘要
基于人工模拟降雨试验,研究不同种类肥料下石灰岩坡地土壤侵蚀和养分流失特征。结果表明：复合肥、不同种类肥料之间的产沙量、产流量、养分流失量均差异显著,配施肥在产沙量、产流量、产沙模数、径流系数均是三者最大的;复合肥在养分流失中为三者最高。配施肥坡面产沙量是复合肥的2.1倍,是缓控释肥的3.2倍,复合肥的养分流失量是配施肥的1.03～1.19倍。太行山石灰岩坡地在施肥种类条件下,产沙总量（x）与产流总量（y）呈y=bx＋c（b〉0）线性方程关系。太行山石灰岩区以减少地表有效养分含量、减少地表流水为治理坡面水土流失的有效途径。
The simulating rainfall method was adopted to study the characteristics of limestone soil erosion and nutrient loss under the application of different fertilizers.The results showed that the sediment yield,runoff yield and the amount of nutrient loss all significantly differed among the different fertilizer treatments.In the mixed fertilizer treatment,the sediment yield,runoff yield,sediment yield modulus and runoff coefficient were higher than those in the other 2fertilizer treatments,while the nutrient loss was the highest in the compound fertilizer treatment.The sediment yield in the mixed fertilizer was 1.2times of that in the compound fertilizer treatment and 3.2times of that in the slow/controlled release fertilizer treatment.The nutrient loss in the compound fertilizer treatment was 1.03 to 1.19 times of that in the mixed fertilizer treatment.Under the application of the 3fertilizer types,the total sediment yield（x）and total runoff yield（y）of the limestone slope in the Taihang Mountain showed the liner equation y=bx＋c（b〉0）.Therefore,reducing the available nutrient content and runoff of the slope surface was an effective method to decrease the soil and water loss on the limestone slope in Taihang Mountain.
出处
《水土保持学报》
CSCD
北大核心
2015年第6期30-34,共5页
Journal of Soil and Water Conservation
基金
河北省自然科学基金项目(C2015204155)
关键词
石灰岩
不同种类肥料
泥沙
养分流失
水土流失
limestone
different fertilizers
sediment
nutrient loss
soil and water loss
