摘要
应用热脉冲技术对河套灌区农田防护林小美旱杨 (Populus popular’s)日蒸腾耗水量进行了研究。结果表明 :在正常生长状态下 ,小美旱杨的日蒸腾耗水量变化曲线呈宽峰状 ,随着林龄增加 ,日蒸腾耗水量逐渐增加。在不同水分条件下 ,灌水时日蒸腾耗水量小于未灌水时日蒸腾耗水量 :萌生苗日蒸腾耗水量大于扦插苗日蒸腾耗水量。
The heat-pulse technique was applied to study the transpiration water consumption of Populus popular in May and June of 1998.The results showed that,in the natural conditions,the intensity of sapflow of Populus popular was 0.088 L.cm -2 .d -1 ,the change curves of the transpiration water consumption are broad peak,at noon it reached the maximum.The transpiration water consumption is increased with age of stand increase.In the different soil moisture content conditions,the transpiration water consumption of Populus popular is higher irrigated than non-irrigated.The transpiration water consumption of sprouted seedling was higher than cuttaged seedling.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2001年第1期44-48,共5页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
内蒙古自治区科委 95攻关项目资助
关键词
热脉冲技术
日蒸腾耗水量
上美旱杨
防护林带
heat-pulse technique
transpiration water consumption
Populus popular
