不同负压供水灌溉对番茄产量及水分利用效率的影响  

Effects of Irrigation with Different Negative Pressures on Tomato Yield and Water Use Efficiency

作　　者：黄梦琪[1] HUANG Mengqi(Department of Hydraulic Engineering,Yangling Vocational&Technical College,Yangling,Shaanxi 712100,China)

机构地区：[1]杨凌职业技术学院,陕西杨凌712100

出　　处：《陕西农业科学》2021年第1期14-17,共4页Shaanxi Journal of Agricultural Sciences

基　　金：杨凌职业技术学院科学研究基金项目“负压灌溉对番茄生长及水分利用效率的影响研究”(A2018010)。

摘　　要：通过利用负压灌溉技术对盆栽番茄植株生长发育、产量及水分利用效率进行了探究,发现在0.0~-20.0 kPa的不同负压灌溉条件下,盆载番茄的水分利用效率随着供水负压值的降低而有所升高,但是产量有所下降;在不影响番茄生长发育的条件下,要获得较高产量和水分利用效率,适宜的供水负压值为-10.0 kPa;盆栽番茄阶段耗水量呈先上升后下降的变化趋势,番茄的需水关键期为开花期和座果期。By the use of negative pressure irrigation technology, the growth, development, yield and water use efficiency of potted tomato plants were explored. It was found that under different negative pressure irrigation conditions of 0.0 kPa ~ 20.0 kPa, the water use efficiency of potted tomato increased with the decrease of negative pressure of water supply, but, the production declined. Under condition of no effect on tomato growth and development, the appropriate negative pressure of water supply-10.0 kPa could obtain higher yield and water use efficiency;The water consumption of potted tomato showed a trend of increase at first, and then a trend of decrease. The critical period of water demand for tomato is at flowering and fruiting stages.

关 键 词：负压灌溉 番茄 产量 水分利用效率 

分 类 号：S641.2[农业科学—蔬菜学]