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中国农学通报 ›› 2015, Vol. 31 ›› Issue (28): 173-178.doi: 10.11924/j.issn.1000-6850.casb15060081

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

坡度对云南红壤径流中磷素浓度的影响研究

褚素贞1,2,张乃明1   

  1. (1云南农业大学植保学院,昆明 650201;2云南农业职业技术学院,昆明 650031)
  • 收稿日期:2015-06-15 修回日期:2015-07-13 接受日期:2015-07-24 出版日期:2015-10-27 发布日期:2015-10-27
  • 通讯作者: 褚素贞
  • 基金资助:
    云南省基金重点项目“滇池磷素表生迁移规律及水生生物响应研究”(2009CC006)。

Effect of Slope on Phosphorus Concentration in Yunnan Red Soil Runoffs

Chu Suzhen1,2, Zhang Naiming1   

  1. (1College of Plant Protection, Yunnan Agriculture University, Kunming 650201; 2Yunnan Agricultural Vocational-Technical College, Kunming 650031)
  • Received:2015-06-15 Revised:2015-07-13 Accepted:2015-07-24 Online:2015-10-27 Published:2015-10-27

摘要: 水体富营养化的发生与农田土壤中磷的淋失有密切的关系。采用模拟降雨试验研究了土壤坡度对地表径流和亚地表径流中磷素浓度的影响。结果表明:在0°—10°范围内,地表径流中总磷、水溶性磷和颗粒态磷浓度和亚地表径流中水溶性磷浓度都随土壤坡度的增加而增加。亚地表径流中总磷和颗粒态磷在坡度为15°时均有一定程度的下降,其下降机理将做下一步分析研究。

关键词: 纤维亚麻种子, 纤维亚麻种子, PEG胁迫, 幼苗, 干旱胁迫, 理化特性

Abstract: There is an important relationship between the occurrence of water eutrophication and phosphorus leaching in farmland soil. The authors studied the effect of soil slope on phosphorus concentration by simulated rainfall experiments. The results showed that the total phosphorus concentration, water-soluble phosphorus concentration and particulate phosphorus concentration in surface runoff, and water-soluble phosphorus concentration in subsurface runoff increased with the increase of soil slope in the range of 0° to 10°. Total phosphorus and particle phosphorus concentration in subsurface runoff declined to a certain degree when the slope was 15°. The decline mechanism will be analyzed and researched further.