期刊论文

Effects of negative pressure irrigation on growth and water use efficiency of spinach

中文

排灌机械工程学报

1674-8530

2021

39

01

68-74

10.3969/j.issn.1674-8530.19.0121

国家863计划项目（2013AA102901）；

本校为第一机构

为筛选出南方地区菠菜生长最适宜的灌溉负压值,采用土壤盆栽试验,以人工浇灌为对照（CK）,研究3个供水负压（-5.0,-10.0,-15.0 k Pa）对菠菜生长、生理指标、品质指标、水分利用效率及养分吸收的影响.结果表明:-5.0 kPa负压供水,菠菜地上部产量178.2 g/pot,显著高于-10.0和-15.0 kPa,与CK差异不具有统计学意义;地下部生物量9.99 g/pot,显著高于CK和-15.0 k Pa;根系活力419.0μg/（g·h）,显著高于CK,-10.0和-15.0 k Pa,分别提高65.3%,51.5%和91.0%; VC和可溶性糖含量分别为0.507 2 mg/g和1.74%,较CK,-10.0和-15.0 k Pa分别提高18.3%,10.5%,44.9%和6.1%,23.4%,47.5%.-5.0 k Pa负压供水,水分利用效...

In order to select a suitable negative pressure to growth of spinach (Spinacia oleracea L.) in Southern China,a pot experiment was conducted to investigate effects of three levels of negative pressure (-5.0 kPa,-10.0 kPa and -15.0 kPa) on spinach growth,physiological index,quality index, water use efficiency and nutrient uptake by using artificial irrigation as the control (CK). The results show that the yield of spinach is 178.2 g/pot in -5.0 kPa treatment,significantly higher than that in -10.0 kPa or - 15.0 kPa treatment,but without signific...