Journal of Integrative Agriculture ›› 2015, Vol. 14 ›› Issue (1): 178-189.DOI: 10.1016/S2095-3119(14)60761-9

所属专题： 昆虫合辑Plant Protection—Entomolgy

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Applying a salinity response function and zoning saline land for three field crops: a case study in the Hetao Irrigation District, Inner Mongolia, China

 TONG Wen-jie1, CHEN Xiao-li2, WEN Xin-ya1, CHEN Fu1, ZHANG Hai-lin1, CHU Qing-quan1, Shadrack Batsile Dikgwatlhe1   

  1. 1、College of Agriculture and Biotechnology, China Agricultural University/Key Laboratory of Farming System, Ministry of Agriculture,
    Beijing 100193, P.R.China
    2、Beijing Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing
    100097, P.R.China
  • 收稿日期:2013-09-29 出版日期:2015-01-01 发布日期:2015-01-08
  • 通讯作者: CHEN Fu, Tel: +86-10-62733316, E-mail: chenfu@cau.edu.cn
  • 作者简介:TONG Wen-jie, Mobile: 18725181757, E-mail: tongwenjie0716@163.com;
  • 基金资助:

    This study was supported by the Special Fund for Agro-Scientific Research in the Public Interest, China (200903001- 2-3).

Applying a salinity response function and zoning saline land for three field crops: a case study in the Hetao Irrigation District, Inner Mongolia, China

 TONG Wen-jie1, CHEN Xiao-li2, WEN Xin-ya1, CHEN Fu1, ZHANG Hai-lin1, CHU Qing-quan1, Shadrack Batsile Dikgwatlhe1   

  1. 1、College of Agriculture and Biotechnology, China Agricultural University/Key Laboratory of Farming System, Ministry of Agriculture,
    Beijing 100193, P.R.China
    2、Beijing Research Center of Intelligent Equipment for Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing
    100097, P.R.China
  • Received:2013-09-29 Online:2015-01-01 Published:2015-01-08
  • Contact: CHEN Fu, Tel: +86-10-62733316, E-mail: chenfu@cau.edu.cn
  • About author:TONG Wen-jie, Mobile: 18725181757, E-mail: tongwenjie0716@163.com;
  • Supported by:

    This study was supported by the Special Fund for Agro-Scientific Research in the Public Interest, China (200903001- 2-3).

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摘要： Salinity is one of the major abiotic factors affecting the growth and productivity of crops in Hetao Irrigation District, China. In this study, the salinity tolerances of three local crops, wheat (Triticum aestinum L.), maize (Zea mays L.) and sunflower (Helianthus annuus L.), growing in 76 farm fields are evaluated with modified discount function. Salinity ecological zones appropriate for these local crops are characterized and a case study is presented for crop salinity ecological zoning. The results show that the yield reductions of wheat, maize and sunflower when grown in saline soils are attributed primarily to a reduction in spikelet number, 1 000-grain weight and seed number per head, respectively. Sunflower is the most tolerant crop among the three which had a salinity tolerance index (ST-index) of 12.24, followed by spring maize and spring wheat with ST-Indices of 9.00 and 7.43, respectively. According to the crop salinity tolerance results, the arable land in the Heping Village of this district was subdivided into four salinity ecological zones: the most suitable, suitable, sub-suitable and unsuitable zones. The area proportion of the most suitable zone for wheat, maize and sunflower within the Heping Village was 27.5, 46.5 and 77.5%, respectively. Most of the most suitable zone occurred in the western part of the village. The results of this study provide the scientific basis for optimizing the local major crop distribution and improving cultural practices management in Hetao Irrigation District.

关键词: salinity tolerance , modified discount function , ecological zoning , Hetao Irrigation District

Abstract: Salinity is one of the major abiotic factors affecting the growth and productivity of crops in Hetao Irrigation District, China. In this study, the salinity tolerances of three local crops, wheat (Triticum aestinum L.), maize (Zea mays L.) and sunflower (Helianthus annuus L.), growing in 76 farm fields are evaluated with modified discount function. Salinity ecological zones appropriate for these local crops are characterized and a case study is presented for crop salinity ecological zoning. The results show that the yield reductions of wheat, maize and sunflower when grown in saline soils are attributed primarily to a reduction in spikelet number, 1 000-grain weight and seed number per head, respectively. Sunflower is the most tolerant crop among the three which had a salinity tolerance index (ST-index) of 12.24, followed by spring maize and spring wheat with ST-Indices of 9.00 and 7.43, respectively. According to the crop salinity tolerance results, the arable land in the Heping Village of this district was subdivided into four salinity ecological zones: the most suitable, suitable, sub-suitable and unsuitable zones. The area proportion of the most suitable zone for wheat, maize and sunflower within the Heping Village was 27.5, 46.5 and 77.5%, respectively. Most of the most suitable zone occurred in the western part of the village. The results of this study provide the scientific basis for optimizing the local major crop distribution and improving cultural practices management in Hetao Irrigation District.

Key words: salinity tolerance , modified discount function , ecological zoning , Hetao Irrigation District