现代农业科技Issue(6)：174-177,181,5.
滴灌带之间热质传递规律研究
Research on Heat and Mass Transfer Law between Two Drip Tapes
赵展恒 1易姝 1黄欢 1梁玉祥1
作者信息
- 1. 四川大学化学工程学院，四川成都 610025
- 折叠
摘要
Abstract
Soil heat and mass transfer between two drip tapes is a complex hydrothermal coupled transport problem. It presents in different forms in different soil properties and climate,so heat and mass transfer in different soils and different areas only can be studied through field measurements. In this paper,we studied the moisture distribution and the temperature distribution between two drip tapes and got the basic law of heat and mass transfer between the drip tapes in the process of fully wet and soil moisture redistribution at the southern edge of the Taklimakan Desert in Xinjiang typical climate and soil conditions.Experimental datas showed that the main reason of the sharp rise in evapotranspiration,soil salinity and the formation of saline circle or saline strips was that there were large moisture gradient and temperature gradient on the edge of wet body,which at the earth’s surface and 15~25 cm away from the drip tape when the soil was been fully wet. Reducing moisture and temperature gradients could be a effective measure to prevent soil salinization.关键词
滴灌/水盐迁移/热质传递/线源入渗Key words
drip irrigation/water and salt migration/heat and mass transfer/line source infiltration分类
农业科技引用本文复制引用
赵展恒,易姝,黄欢,梁玉祥..滴灌带之间热质传递规律研究[J].现代农业科技,2015,(6):174-177,181,5.
