| Adaptability study on salinity of irrigation water to bud stage of Helianthus annuus |
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| DOI：10.7606/j.issn.1000-7601.2009.04.06 |
| Key Words: saline water irrigation Helianthus annuus bud stage |
| Author Name | Affiliation | | BI Yuanjie | Xi’an University of Technology, Institute of Water Resources and Hydro-electric Engineering, Xi’an, Shaanxi 710048, China | | WANG Quanjiu | Xi’an University of Technology, Institute of Water Resources and Hydro-electric Engineering, Xi’an, Shaanxi 710048, China
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, the Chinese Academy of Sciences, Yangling, Shaanxi 712100, China | | XUE Jing | Xi’an University of Technology, Institute of Water Resources and Hydro-electric Engineering, Xi’an, Shaanxi 710048, China |
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| Abstract: |
| To study the adaptability on salinity of irrigation water to bud stage of Helianthus annuus, the field plot experiments have been adopted, and salinity of irrigation water for increasing soil water in bud stage have been divided into five levels (fresh water、3 g/L、4 g/L、5 g/L、6 g/L), the water shortage in bud stage treatment as contrast. The results show that soil salinity of 0～40 cm soil horizon of all treatments have reached the near of initial value without notable desalination or salification when growth duration finished. Using the saline water whose total salinity is 3 g/L, the growth of Helianthus annuus not only haven’t been restrained but also have been stimulated with plant height and stem diameter, he number of one disc’s grain, hundred weight of grain and yield, are all greater than the ones of fresh water treatment. The yield of Helianthus annuus will not drop notably using water with total salinity under 5 g/L to irrigate on bud stage. On the condition of freshwater resource shortage, the water whose total salinity is near to 6 g/L can be take into account to irrigate Helianthus annuus on its bud stage with a increase of production and without increase of soil salt content compared with water shortage treatment. |
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