中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
川中紫色土旱坡地磷素的输出特征研究

文献类型:期刊论文

作者朱波
刊名水土保持学报
出版日期2004
卷号18期号:6页码:97-99
关键词紫色土旱坡地 磷素 径流 渗漏
其他题名Study of Phosphorus Load from Purple Soil Cropland in Mid-Sichuan
合作状况国内
中文摘要在中国科学院盐亭农业生态站进行了为期1年(2002 4~2003 4)的定期监测研究,探讨了磷素的农业非点源输出规律。研究表明紫色土旱坡地磷素输出以颗粒吸附态为主,全磷输出量不高,但水溶性磷素和磷酸盐的输出浓度对环境的影响应值得重视。全磷的输出随不同的耕作方式不同而不同,短期降雨:顺坡>平作>垄作;垄作种植,在长期降雨条件下,水溶性磷的径流输出将会增大,从而使全磷的输出量相应增加,即长期阴雨天气下,全磷的输出量:顺坡种植、垄作>平作。通过分析还发现磷素地下渗漏与降雨量之间也存在类似的关系,即磷素下渗浓度存在极值,它与降雨量之间不是单调递增关系,而是开口向下的抛物线,其相关系数为R2=0 9232。
英文摘要P load from cropland mostly is in the form of PP (Particulate P). The amount of TP (total Phosphorus) isn’t high, but the concentration of DP and ortho-phosphrous should be noticed. Because the bimestrial rain from June to July in 2002, all forms of P of the sample gotten in the 4th, July 2002 are head and shoulders above other samples. After comparing the three different cultivates manner sections, we find some laws: the load of TP in runoff is diverse by cultivate manner sections. In instant rain, the amount of TP load with runoff is FT (Flat tillage)>DT (Down slope tillage) > RT (Ridge tillage): while in continuous rain is DT, RT>FT. On the other hand, there is the resemble relation between leakage P and rainfall, the correlative coefficient R2=0.9232. In conclusion, the amount of total P load from agricultural system by NPS isn’t high, but the environmental effects caused by DP should be paid attention to. The NPS P has less influence on ground water than surface water. The NPS P influences on surface water are potential, which will break out in the moderate conditions.
资助信息中科院创新项目"川中紫色土区N、P水土界面交换规律及其非点源污染负荷"(KZCX2-413-5)
语种中文
公开日期2011-05-17
源URL[http://ir.imde.ac.cn/handle/131551/3116]  
专题成都山地灾害与环境研究所_成都山地所知识仓储(2009年以前)
成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
推荐引用方式
GB/T 7714
朱波. 川中紫色土旱坡地磷素的输出特征研究[J]. 水土保持学报,2004,18(6):97-99.
APA 朱波.(2004).川中紫色土旱坡地磷素的输出特征研究.水土保持学报,18(6),97-99.
MLA 朱波."川中紫色土旱坡地磷素的输出特征研究".水土保持学报 18.6(2004):97-99.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

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