%A TONG Wen-Jie,LIU Qian,CHEN Fu,WEN Xin-Ya,LI Zhong-Hao,GAO Hong-Yong %T Study on Salt Tolerance of Wheat in Hetao Irrigation District and Its Ecological Adaptable Region %0 Journal Article %D 2012 %J Acta Agronomica Sinica %R 10.3724/SP.J.1006.2012.00909 %P 909-913 %V 38 %N 05 %U {https://zwxb.chinacrops.org/CN/abstract/article_5107.shtml} %8 2012-05-12 %X 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.