| Effect of seawater irrigation on Helianthus tuberosus L．in Laizhou Gulf |
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| DOI：10.7606/j.issn.1000-7601.2004.03.15 |
| Key Words: seawater resource irrigation Helianthus tuberosus L. salt ions inulin |
| Author Name | Affiliation | | XIA Tian-xiang | College of Resources and Environmental Sciences,N anj ing A gricultural University ,N anj ing 210095,China | | LIU Zhao-pu | College of Resources and Environmental Sciences,N anj ing A gricultural University ,N anj ing 210095,China | | QI Chang-hai | 863 Exp erimental Base of N anj ing A gricultural University ,L aiz hou,Shandong 261400,China | | CHEN Ming-da | College of Resources and Environmental Sciences,N anj ing A gricultural University ,N anj ing 210095,China |
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| Abstract: |
| The field experiments were carried out in Laizhou, Shandong province in 2002 to study the effect of seawater irrigation on Helianthus tuberosus L.. The results were as below: (1)Na- and Cl- leached in the 0～60 cm soil layers; (2)The stems of Helianthus tuberosus L. had the ability of containing high contents of Na- and Cl-, and the whole plants absorbed selectively K+ in high proportions of seawater irrigation; (3)The shoot and tuber yields of Helianthus tuberosus L. didn’t decrease clearly when the seawater proportion was less than 30%, and they decreased by 37% and 32% at the 50% seawater irrigation in contrast to freshwater-irrigation; (4)The inulin contents in tubers of Helianthus tuberosus L. were not affected by seawater irrigation, being in the range of 40%~65%. |
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