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作物学报 ›› 2012, Vol. 38 ›› Issue (05): 909-913.doi: 10.3724/SP.J.1006.2012.00909

• 研究简报 • 上一篇    下一篇

河套灌区小麦耐盐性及其生态适宜区

童文杰1，刘倩1，陈阜1,*，文新亚1，李中昊1，高鸿永2   

  1. 1中国农业大学农学与生物技术学院 / 农业部农作制度重点实验室, 北京 100193; 2内蒙古河套灌区义长灌域管理局, 内蒙古五原 015100
  • 收稿日期:2011-10-19 修回日期:2012-01-19 出版日期:2012-05-12 网络出版日期:2012-03-05
  • 通讯作者: 陈阜, E-mail: chenfu@cau.edu.cn, Tel: 010-62733316
  • 基金资助:

    本研究由国家公益性行业(农业)科研专项(200903001-2-3)资助。

Study on Salt Tolerance of Wheat in Hetao Irrigation District and Its Ecological Adaptable Region

TONG Wen-Jie1,LIU Qian1,CHEN Fu1,*,WEN Xin-Ya1,LI Zhong-Hao1,GAO Hong-Yong2   

  1. 1 College of Agronomy and Biotechnology, China Agricultural University / Key Laboratory of Farming System, Ministry of Agriculture, Beijing 100193, China; 2 Administration of Hetao Irrigation District in Inner Mongolia, Wuyan 015100, China
  • Received:2011-10-19 Revised:2012-01-19 Published:2012-05-12 Published online:2012-03-05
  • Contact: 陈阜, E-mail: chenfu@cau.edu.cn, Tel: 010-62733316

PDF

987

被引次数

12

摘要： 以河套灌区小麦主栽品种永良4号为研究对象，选择20个农户地块定位观测，探讨不同土层土壤盐分含量对小麦产量及其构成因素的影响，研究小麦在该地区的耐盐性及其生态适宜区。结果表明，以小麦苗期0~10 cm土壤饱和浸提液电导率(ECe)作为根层盐分指标来评判小麦的耐盐性最具代表性，该土层对应的小麦耐盐指数为10.465；土壤盐分与小麦各产量构成因素之间均呈显著负相关，尤其与公顷穗数的相关性更强；根据小麦耐盐性分析，以小麦相对产量下降幅度≤10%、10%~25%、25%~50%和≥50%作为划分标准，将区域耕地划分为小麦生产最适宜区、适宜区、次适宜区和不适宜区，其对应的小麦苗期0~10 cm土壤ECe分别为≤4.972、4.972~6.747、6.747~9.196和≥9.196 dS m−1。

关键词: 耐盐函数, 耐盐指数, 土壤饱和浸提液电导率, 生态适宜性

Abstract: Using the major local wheat cultivar Yongliang 4, the effect of salinity in different soil layers on yield and its components of wheat was investigated in 20 farmers' fields in Hetao Irrigation District which was in Inner Mongolia, China. And salt tolerance of wheat and its ecological adaptable region were studied in this district. The results showed that ECe of 0 to 10 cm soil layer at wheat seedling stage was the most representative as the root-zone salinity index to analysis wheat salt tolerance, the salt tolerance index of wheat was 10.465 for this soil layer. There were significant negative correlations between soil salinity and wheat yield components, especially between soil salinity and spike number per hectare. According to the wheat salt tolerance, and the wheat relative yield reduction of ≤10%, 10–25%, 25–50%, and ≥50% as the division standard, we divided the farm land into the most suitable region, suitable region, sub-suitable region and unsuitable region, where the electrical conductivities of saturation extract of the 0-10 cm soil at wheat seedling stage were ≤4.972, 4.972–6.747, 6.747–9.196, and ≥9.196 dS m-1, respectively.

Key words: Salt tolerrance function, Salt tolerance index, Electrical conductivity of saturation extract of the soil, Ecological adaptability

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