Effects of soil salt on soil water-salt dynamic and photosynthetic characteristics of spring wheat
PEI Lei1,2, WANG Zhenhua1,2, ZHENG Xurong1,2, LI Wenhao1,2
1.College of Water & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China; 2.Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi University, Shihezi, Xinjiang 832000, China
Abstract：Barrel experiment was carried out to investigate the effects of soil salt content on soil water-salt dynamics and physiological indices of drip irrigated spring wheat and to provide theoretical foundation and technical support for planting spring wheat in saline-alkali soils. Different soil salt contents(i.e. 0.15%(CK), 0.80%, 1.10%, 1.40%, 1.70%, 2.00%, 2.30%, 2.60%)were set up; soil water-salt dynamics and physiological indices of drip irrigated spring wheat were studied. The results showed that the overall variation of soil water content presented a decreasing trend in the whole growth period of spring wheat. With the increase of soil depth, the soil water content and the salt content showed an increasing trend. The greater the soil salt content is, the higher the averaged soil water content is. Compared with the soil salt content before sowing, the salt content of each treatment in 0 to 40 cm soil layer decreased at harvest time, indicating a desalination process during the growth period. Spring wheat treatments with initial soil salt contents of 0.15%, 0.80% and 1.10% had the highest leaf water use efficiency and a relatively high net photosynthetic rate.
裴磊,, 王振华,, 郑旭荣,, 李文昊,. 土壤盐分对春小麦水盐动态及光合特性的影响[J]. 排灌机械工程学报, 2016, 34(2): 157-164.
PEI Lei,, WANG Zhenhua,, ZHENG Xurong,, LI Wenhao,. Effects of soil salt on soil water-salt dynamic and photosynthetic characteristics of spring wheat. Journal of Drainage and Irrigation Machinery Engin, 2016, 34(2): 157-164.
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