Case study of developing an integrated water and nitrogen scheme for agricultural system on the North China Plain

• Autorzy: Liu Y. , Tao F. , Lao Y. , Ma J.
• Języki publikacji: EN

Abstrakty

EN

Appropriate irrigation and nitrogen fertilization, along with suitable crop management strategies, are essential prerequisites for optimum yields in agricultural systems. This research attempts to provide a scientific basis for sustainable agricultural production management for the North China Plain and other semi-arid regions. Based on a series of 72 treatments over 2003-2008, an optimized water and nitrogen scheme for winter wheat/summer maize cropping system was developed. Integrated systems incorporating 120 mm of water with 80 kg N ha-1 N fertilizer were used to simulate winter wheat yields in Hebei and 120 mm of water with 120 kg N ha-1 were used to simulate winter wheat yields in Shandong and Henan provinces in 2000-2007. Similarly, integrated treatments of 40 kg N ha-1 N fertilizer were used to simulate summer maize yields in Hebei, and 80 kg N ha-1 was used to simulate summer maize yields in Shandong and Henan provinces in 2000-2007. Under the optimized scheme, 341.74 107 mm ha-1 of water and 575.79 104 Mg of urea fertilizer could be saved per year under the wheat/maize rotation system. Despite slight drops in the yields of wheat and maize in some areas, water and fertilizer saving has tremendous long-term eco-environmental benefits.

• Wydawca: -
• Czasopismo: International Agrophysics
• Rocznik: 2013
• Tom: 27
• Numer: 4
• Opis fizyczny: p.425-437,fig.,ref.

Twórcy

autor

Liu Y.

• Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Datun Road 11 A, Chaoyang District, Beijing 100101, China

autor

Tao F.

• Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Datun Road 11 A, Chaoyang District, Beijing 100101, China

autor

Lao Y.

• Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Datun Road 11 A, Chaoyang District, Beijing 100101, China

autor

Ma J.

• Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Datun Road 11 A, Chaoyang District, Beijing 100101, China

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Uwagi

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