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2013 | 27 | 4 |
Tytuł artykułu

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

Autorzy
Treść / Zawartość
Warianty tytułu
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.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
27
Numer
4
Opis fizyczny
p.425-437,fig.,ref.
Twórcy
autor
  • Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Datun Road 11 A, Chaoyang District, Beijing 100101, China
autor
  • Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Datun Road 11 A, Chaoyang District, Beijing 100101, China
autor
  • Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Datun Road 11 A, Chaoyang District, Beijing 100101, China
autor
  • 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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