膜下滴灌水分调控对番茄产量影响和经济效益评价的研究
Study of water regulation on tomato yield and economic benefit evaluation by drip irrigation under film

通过膜下滴灌条件下不同灌水定额对番茄生长及产量的研究，分析了充分灌水和不同水分胁迫下土壤水分动态变化规律，进而讨论了在不同水分处理和不同灌水方式下番茄的营养生长、产量、水分利用效率以及经济效益的差异。结果表明：（1）膜下滴灌不同水分处理的土壤各层水分变幅不同，重度胁迫的变幅最大，各次灌水均比充分灌溉大4%～5%；（2）水分对番茄株高的影响成正效应，对茎粗的影响不明显，充分灌溉株高、茎粗分别比重度胁迫分别大44.7%和18.5%，各胁迫处理在灌水后表现出不同的补偿生长效应；（3）滴灌充分供水处理条件下的水分利用效率、产量、经济效益为别为26.64 kg·m-3、75 349 kg·hm-2、49 747元·hm-2，均比沟灌高37.1%、3.8%、3.7%。
Research on drip irrigation about different irrigation quota for growth and yield of tomato, analyzes the full irrigation and different water stress on the dynamic changes of soil moisture, and discussed tomatoes nutrition growth、yield、WUE and economic benefits at different water treatments and irrigation methods. The results showed that: (1) The water amplitude are differents in different layers of different water treatments on mulch drip irrigation, severe stress amplitude maximum, full irrigation less than it 4%～5% for each time; (2) the trends is consistency about soil moisture and the height of tomato, the impact was not obvious on stem diameter, the plant height、stem diameter large than severe stress were 44.7% and 18.5%, tomato exhibited different growth compensation after each stress irrigation treatment; (3) The WUE、yield and economic benefits respectively were 26.64 kg·m-3、75 349 kg·hm-2、49 747 yuan·hm-2 after full water drip irrigation treatment, higher than furrow irrigation were 37.1%、3.8% and 3.7%.