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Special Issue:
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、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 |
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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.
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.
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Received: 29 September 2013
Accepted:
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| Fund: This study was supported by the Special Fund for Agro-Scientific Research in the Public Interest, China (200903001- 2-3). |
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Corresponding Authors:
CHEN Fu, Tel: +86-10-62733316, E-mail: chenfu@cau.edu.cn
E-mail: chenfu@cau.edu.cn
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| About author: TONG Wen-jie, Mobile: 18725181757, E-mail: tongwenjie0716@163.com; |
Cite this article:
TONG Wen-jie1, CHEN Xiao-li2, WEN Xin-ya1, CHEN Fu1, ZHANG Hai-lin1, CHU Qing-quan1, Shadrack Batsile Dikgwatlhe1.
2015.
Applying a salinity response function and zoning saline land for three field crops: a case study in the Hetao Irrigation District, Inner Mongolia, China. Journal of Integrative Agriculture, 14(1): 178-189.
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