Crops ›› 2020, Vol. 36 ›› Issue (2): 16-19.doi: 10.16035/j.issn.1001-7283.2020.02.003

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Developments and Prospects of Conservation Tillage in the Dryland of Northern China

Qi Hua1,Li Congfeng2,Zhao Ming2,Jiang Ying1   

  1. 1 College of Agronomy, Shenyang Agricultural University, Shenyang 110866, Liaoning, China
    2 Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2020-01-07 Revised:2020-03-09 Online:2020-04-15 Published:2020-04-13

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Abstract:

Conservation tillage is an important part of dryland tillage system, it has been popularized in China with large scale since 2002. Through the integrated supporting measures, such as less tillage, no-tillage and straw returning to the field, the soil erosion of farmland can be reduced, and the eco-environment of farmland can be protected. Meanwhile, the goal of coordinated development of ecological and economic benefits can be achieved. In this paper, the development history of soil tillage and the main achievements of conservation tillage in dryland of northern China were reviewed and the new tasks of conservation tillage in dryland of northern China were prospected so as to provide references for the sustainable and efficient development of dryland under the condition of climate change.

Key words: Dryland, Straw returning, Conservation tillage system, Developmental suggestions

Fig.1

Serious soil erosion of wind (left) and water (right) in dryland"

Fig.2

Mechanical operation of straw strip returning to field (left) and soil profile showing operation effects (right)"

Fig.3

Mechanical operation of strip tillage and dense planting (left) and the field situation of seedling emergence (right)"

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