| 盐渍化地区油料向日葵叶水势影响因素及变化规律研究 |
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| 引用本文： | 乔冬梅,史海滨,薛铸,翟进,张义强.盐渍化地区油料向日葵叶水势影响因素及变化规律研究[J].灌溉排水学报,2005,24(4):15-18. |
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| 作者姓名： | 乔冬梅 史海滨 薛铸 翟进 张义强 |
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| 作者单位： | 内蒙古,农业大学水利与土木工程学院,内蒙古,呼和浩特市,010018;内蒙古河套灌区沙壕渠试验站,内蒙古,巴盟,015400 |
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| 基金项目： | 国家自然科学基金（50269002） |
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| 摘 要： | 针对盐渍化地区水、盐对作物的机理影响,采用田间小区试验研究了在盐渍化地区油料向日葵叶水势的影响因素及叶水势的时空变化规律。结果表明,盐渍化地区油料向日葵叶水势的主要影响因子包括净辐射、大气温度、大气湿度、土壤盐分和土壤水分。叶水势与净辐射呈抛物线关系,与大气温度、大气湿度呈线性关系。随生育进程叶水势有减小的趋势。叶水势随大气条件的变化而出现明显的日变化规律,且日变幅较大。土壤水分对叶水势的影响较土壤盐分的大。
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| 关 键 词： | 油料向日葵 叶水势 盐渍化 SPAC |
| 文章编号： | 1000-646X（2005）04-0015-04 |
| 收稿时间： | 2005-03-17 |
| 修稿时间： | 2005年3月17日 |
Study of Influencing Factor and Varying Regular of Sunflower's Leaf Water Potential in Salinization Distribution |
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| QIAO Dong-mei,SHI Hai-bin,XUE Zhu,ZHAI Jin,ZHANG Yi-qiang.Study of Influencing Factor and Varying Regular of Sunflower's Leaf Water Potential in Salinization Distribution[J].Journal of Irrigation and Drainage,2005,24(4):15-18. |
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| Authors: | QIAO Dong-mei SHI Hai-bin XUE Zhu ZHAI Jin ZHANG Yi-qiang |
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| Institution: | 1. College of Water Conservancy and Civil Engineering. Inner Mongolian Agriculture University, Hohhot 010018, China; 2. Sha-Hao-Qu Experiment Station, Hetao, Irrigation District, Inner Mongolian, Bameng 015400, China |
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| Abstract: | Aiming to influence of soil water and salt on plant mechanics in salinization distribution,field experiment are conducted to study influencing factor and regular of temporal and spatial variation of sunflower's leaf water potential. The result shows that the key influencing factors of sunflower's leaf water potential include net radiation?atmospheric temperature?atmospheric humidity?soil salt and soil moisture in salinization distribution. There is a parabolic relation between leaf water potential and net radiation, linear relation between leaf water potential and atmospheric temperature, linear relation between leaf water potential and atmospheric humidity. with growth stage, leaf water potential reduces. leaf water potential has obvious daily variation with changes of atmospheric conditions,and the daily leaf water potential changes violently. The effect of soil moisture to the leaf water potential is greater than soil salt. The study offers reliable rationale to research of saved irrigation in salinization distribution. |
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| Keywords: | sunflower leaf water potential salinization SPAC |
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