水土保持学报2017，Vol.31Issue(5)：72-80,9.DOI:10.13870/j.cnki.stbcxb.2017.05.012
不同用量猪粪对红壤花生坡地水土流失和磷素流失的影响
Effects of Different Amounts of Pig Manure on Water and Soil Erosion and Phosphorus Loss of Peanut-grown Sloping Lands in Red Soils
摘要
Abstract
In order to provide scientific basis for rational application of pig manure as an organic fertilizer in typical red soil sloping lands,a field runoff micro location test in peanut-grown red soils that developed from three typical parent materials (granite,red sandstone and red clay) was conducted for three consecutive years to monitor the effects of different pig manure amounts on water and soil loss and phosphorus loss in red soils in mid-subtropical region of China.The treatments included six application rates of pig manure (phosphorus content was 0,0.5,1,2,4 and 8 times that of the control) that combined with half amount of local conventional chemical fertilizers,and the application of conventional chemical fertilizers alone was taken as the control.The results showed that runoff and sediment were obviously reduced by the application of pig manure,but the phosphorus content in runoff and sediment increased linearly with the increasing of pig manure application rate,and this suggested a growing environmental risk.Runoff and sediment volume of the three red soils listed in the order of granite ＞ red sandstone ＞ red clay.When the pig manure application rate was 3 500 kg/(hm2 · a),runoff and sediment reduced by 28.0％ and 6.3％,respectively,in the red soil developed from granite,and the above two parameters reduced by 23.2％ and 37.1％,respectively,in the red soil developed from red sandstone.When the pig manure application rate was 7 000 kg/(hm2 · a),runoff and sediment reduced by 40.7％ and 12.8％ respectively in the red soil developed from red clay.When the pig manure application rates were 14 000,28 000 and 28 000 kg/(hm2 · a) for red soils from granite,red sandstone and red clay,respectively,the average total phosphorus content in runoff exceeded the standard value of Environmental Quality Standards for Surface Water of Class V.Total phosphorus content in runoff of the three kinds of red soil listed in the order of granite ＞ red clay ＞ red sandstone,and total phosphorus content in sediment of the three red soils listed in the order of red clay ＞ granite ＞ red sandstone.Under the condition of halving the conventional amount of chemical fertilizer,applying pig manure at the rate of 40 kg P/(hm2 · a) for soils developed from granite and red sandstone,and at the rate of 80 kg P/(hm2 · a) for the soil developed from red clay,could effectively reduce water and soil loss without increasing the risk of phosphorus loss over 3 years.关键词
猪粪/红壤/水土流失/磷素流失/母质Key words
pig manure/red soil/soil erosion/phosphorus loss/parent materials分类
农业科技引用本文复制引用
杨奕如,周志高,王兴祥..不同用量猪粪对红壤花生坡地水土流失和磷素流失的影响[J].水土保持学报,2017,31(5):72-80,9.基金项目
公益性行业(农业)科研专项(201203050) （农业）
中国科学院知识创新项目(ISSASIP1632) （ISSASIP1632）
江西省赣鄱英才555工程专项 （）
