摘要
基于温室盆栽番茄试验,设计了重度、中度和轻度水分亏缺处理(土壤相对含水率分别为田间持水率的50%～60%、60%～70%、70%～80%),研究了水分亏缺对番茄生长发育及生理特性的影响。结果表明,轻度的水分亏缺不会显著影响株高茎粗的增长,而中度和重度水分亏缺抑制了番茄植株的生长发育。水分亏缺增加了叶片的叶绿素、丙二醛及脯氨酸质量分数,且随着水分亏缺程度的加重,各个质量分数均呈增加的趋势,复水后,各质量分数均明显下降,表现出一定的补偿效应。水分亏缺降低了根系活力,加速了根系的衰老。
Based on pot experiments in greenhouse, severe deficit, moderate deficit, light deficit （the relative soil water content was 50 %-60%, 60-70% and 70%-80% of soil moisture capacity）were designed to study the effects of water deficit on growth and development and physiological characteristics of green- house tomato. Results showed that there was no significant effect on height and stem diameter under water deficit, while the growth and development of tomato were inhibited under moderate and severe water defi- cits. The chlorophyll content, MDA and proline content increased under water deficit, and the contents in- creased with water deficit aggravating. At the same time, there was obvious decrease and compensatory effect after rewatering. Water deficit reduced the root activity and speeded up the senescence of root sys tern.
出处
《灌溉排水学报》
CSCD
北大核心
2013年第4期67-70,共4页
Journal of Irrigation and Drainage
基金
水利部公益性行业科研专项(201001061)
陕西省自然科学基金项目(2012JM3004)
高校基本科研业务费专项资金项目(QN2011022)
关键词
水分亏缺
温室盆栽番茄
生长发育
生理特性
water deficit
potted tomato in greenhouse
growth-development
physiological characteristics
