灌溉排水学报2011，Vol.30Issue(4)：80-83,4.
水稻需水关键期冠气温差变化规律试验研究
Canopy-air Temperature Difference of Rice in Key Water Requirement Periods
张旭东 1陈伟 1迟道才 1蔡亮2
作者信息
- 1. 沈阳农业大学水利学院,沈阳110866
- 2. 辽宁省水利水电科学研究院,沈阳110003
- 折叠
摘要
Abstract
In order to investigate the applicability of moisture monitoring based on canopy temperature in rice, some experiments of different water treatments were carried in Liaoning Province. The rule of variation of canopy-air temperature difference of rice in key water requirement periods in Shenyang region and the relationships among canopy-temperature difference, soil water pressure and air vapor pressure difference（VPD） were analyzed. The results showed that currently being negative canopy-air temperature difference of rice changed with weather and water conditions. The conditions of soil water has no influence on canopy-air temperature difference when soil water suction was lower than 5 kPa, while the canopy-air temperature difference became greater and showed a trend of positive with the falling of soil water poten- tial. The linear relationship between canopy-air temperature difference and VPD was patency either in key water requirement periods or in a day when the air relative humidity was lower than 70 %.关键词
冠气温差/灌溉/土壤水吸力Key words
canopy-air temperature difference/irrigation~ soil water potential分类
农业科技引用本文复制引用
张旭东,陈伟,迟道才,蔡亮..水稻需水关键期冠气温差变化规律试验研究[J].灌溉排水学报,2011,30(4):80-83,4.
