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应用生态学报 ›› 1997, Vol. 8 ›› Issue (2): 143-146.

• 研究论文 • 上一篇    下一篇

幼龄桔园套种对土壤流失的影响及其模拟研究

吴建军, 李全胜, 严力蛟   

  1. 浙江农业大学农业生态研究所, 杭州 310029
  • 收稿日期:1996-04-16 修回日期:1996-09-24 出版日期:1997-03-25 发布日期:1997-03-25
  • 基金资助:

    浙江省自然科学基金(391152)

Effect of intercropping on soil erosion in young citrus plantation —— a simulation study

Wu Jianjun, Li Quansheng, Yan Lijiao   

  1. Zhejiang Agricultural University, Hangzhou 310029
  • Received:1996-04-16 Revised:1996-09-24 Online:1997-03-25 Published:1997-03-25

摘要: 在幼龄桔园套种紫云英(Ⅰ)、套种(混播)黑麦草和紫云英(Ⅱ)、不套种(Ⅲ)及套种黑麦草(Ⅳ),分析和模拟了下垫面性状和降雨与土壤流失量的关系及规律.套种牧草使土壤流失量大大下降,平均侵蚀量仅为自然裸露区的14.7%;各小区(折算成hm2)单位降雨的土壤侵蚀量随降雨过程次序的增加而呈指数规律下降,土壤流失量随覆盖度指数而下降.

关键词: 下垫面, 幼龄桔园套种, 土壤侵蚀, 模拟研究, 高寒草甸, 放牧强度, 土壤因子, 群落特征

Abstract: With non intercropping as a control,milkvetch, mixture of ryegrass and milkvetch and ryegrass were respectively intercropped with young citrus trees and the relationships of underlying soil surface with rainfall and soil erosion were analyzed and simulated. The amount of eroded soil from intercropped plots was greatly reduced,being only 14.7% as compared with control on the average.The amount of eroded soil is decreased exponentially with increasing order of rain course and increasing coverage of soil surface.

Key words: Underlying surface, Intercropping in young citrus plantation, Soil erosion, Simulation study, alpine meadow, grazing intensity, community characteristics, soil factor