Nitrogen and Phosphorus Runoff in the Typical Vegetable Fields in Tai Lake Basin
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WANG Chun-mei1,JIANG Zhi-guo2,ZHAO Yan-wen1(1.College of Resource and Environmental Sciences,Nanjing Agricultural University,Nanjing,Jiangsu 210095,2.Changzhou Livestock Centre for Aquatic Product Quality Supervision and Testing,Changzhou,Jiangsu 213000)

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    Abstract:

    A field experiment with building runoff ponds on the typical vegetable lands in Tai lake basin was conducted to study the characteristics the loss of nitrogen and phosphorus with surface runoff.The results showed that the mean annual discharge of nitrogen and phosphorus was different greatly,total nitrogen(TN) was 45.76 kg/hm2 to 60.45 kg/hm2,and total phosphorus(TP) was 2.67 kg/hm2 to 3.95 kg/hm2.Comparing with the conventional fertilization,optimum fertilization could reduce the discharge of nitrogen and ...

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  • Online: October 25,2012
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