| 温室滴灌条件下水分亏缺对番茄生长及生理特性的影响 |
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| 引用本文： | 刘浩,孙景生,段爱旺,梁媛媛.温室滴灌条件下水分亏缺对番茄生长及生理特性的影响[J].灌溉排水学报,2010,29(3). |
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| 作者姓名： | 刘浩 孙景生 段爱旺 梁媛媛 |
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| 作者单位： | 1. 中国农业科学院,农田灌溉研究所,河南新乡,453003;农业部,作物需水与调控重点开放实验室,河南新乡,453003
2. 中国农业科学院,农田灌溉研究所,河南新乡,453003 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 为确定温室滴灌条件下番茄高产高效的适宜土壤水分控制指标,采用小区试验方法,在温室滴灌条件下研究了不同时期水分亏缺对番茄生长发育及生理特性的影响。研究结果表明,任何生育阶段发生水分亏缺均会降低番茄叶片光合速率及气孔的开度,进而影响干物质的累积和运转,但不同时期水分亏缺的影响形式及程度有所不同;苗期水分亏缺会抑制番茄的正常生长发育,但水分过高会使植株徒长,不利于光合产物向产量的运移;开花坐果期水分亏缺不仅抑制了番茄的生长发育,而且降低了干物质的累积,并最终影响到产量的形成;成熟采摘期水分亏缺会加速番茄植株的老化,降低最终干物质量,对番茄产量的形成影响最为明显。在不影响番茄植株正常生长发育及生理需水情况下,适度水分亏缺(T1处理)可实现高产与高效用水的统一。
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| 关 键 词： | 温室 番茄 水分亏缺 生长发育 生理特性 |
Effect of Water Stress on Tomato Growth and Physiological Characteristics under Drip Irrigation in Greenhouse |
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| LIU Hao,SUN Jing-sheng,DUAN Ai-wang,LIANG Yuan-yuan.Effect of Water Stress on Tomato Growth and Physiological Characteristics under Drip Irrigation in Greenhouse[J].Journal of Irrigation and Drainage,2010,29(3). |
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| Authors: | LIU Hao SUN Jing-sheng DUAN Ai-wang LIANG Yuan-yuan |
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| Abstract: | In order to determine soil moisture control index with high yield and efficient water use for tomato under drip irrigation in greenhouse,effect of water deficit at different growth stages on tomato growth and physiological characteristics were studied in this paper.The results showed that water deficit reduced tomato leaf photosynthetic rate and stomatal aperture,and influenced dry matter accumulation and transportation,but influencing pattern and degree of water stress were not same in the different growth stage.Water stress inhibited tomato growth and development during the vegetative growth stage,but too enough water led to plant spindling and affected photosynthate transportation to the yield.During the flowering and fruit development stage,water stress not only inhibited tomato growth,but also reduced dry matter accumulation,and affected the yield formation.During the fruit maturation stage,Water deficit accelerated tomato plants aging,decreased the ultimate amount of dry matter,and it was the most obvious for affection to yield formation.Moderate water deficit can achieve high yield and high water use unity under no affection to tomato normal growth and physiological water requirement. |
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| Keywords: | greenhouse tomato water stress growth and development physiological characteristics |
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