摘要
为筛选出南方冬季蔬菜小白菜(brassica)主动式供水灌溉(负压灌溉)最适宜的土壤水分条件,采用盆栽试验,研究了南方地区2种典型蔬菜土壤—红菜园土和潮菜园土,3个不同负压给水(-5.0、-7.5、-10.0 k Pa)对土壤含水率、小白菜生长情况、耗水特性及其水分利用效率等的影响。结果表明,红菜园土种植冬季小白菜,最适宜的负压灌溉值为-10.0 k Pa,土壤质量含水率为18.7%,潮菜园土最适宜的负压灌溉值为-5.0 k Pa,土壤质量含水率为25.3%。
Using pot experiments, we investigated the impact of irrigation under negative pressure on growth of Chinese cabbage and winter vegetable brassica in attempts to select an irrigation method which could provide the most suitable moisture content for the two vegetables to grow in red-garden and alluvial soils in Southern China. Three water pressures, -5.0, -7.5 and -10.0 kPa were examined, and the results showed that for the red-garden soil the most suitable water pressure was -10.0 kPa with an associated soil moisture content of 18.7%, while for the al- luvial garden soil, the most suitable water pressure was -5.0 kPa with an associated moisture content of 25.3%.
出处
《灌溉排水学报》
CSCD
北大核心
2017年第7期33-37,共5页
Journal of Irrigation and Drainage
基金
国家863计划项目(2013AA102901)
关键词
小白菜
负压灌溉
生物量
水分利用效率
土壤质量含水率
Chinese cabbage
irrigation under negative water pressure
biological yield： water use efficiency
soil water content
