文档介绍：
Based on Infrared Thermal Imaging Technology in Rice
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Water Stress Index Test
GAO Mingchao1, ZHANG Wenzhong1, HAN Yadong2, YAO Chen1, WANG Yitao2,
DING Guohua1, ZHANG Zhenyu1**
(1. Rice Research Institute, Key Laboratory of Northeast Rice Biology and Breeding, Ministry of
Agriculture, Key Laboratory of Northern Japonica Rice ics and Breeding, Ministry of
Education, Shenyang Agricultural University, ShenYang 110866;
2. College of Agronomy, Shenyang Agricultural University, ShenYang 110866)
Abstract: Observed by infrared thermal imaging technology, in the test rice canopy temperature were
measured under different irrigation conditions, taking the Idso empirical model to determine the lower
bound equation of the canopy-air temperature differences, and so to get the best period of observing the
rice water deficit by the CWSI, in addition the relationship of the CWSI, soil water content and
transpiration rate were also analyzed. The preliminary test analysis showed that the CWSI can reflect
the rice water stress conditions well.
Keywords: crop water stress index; the canopy-air temperature differences; soil water content
0 Introduction
Rice is an important grain crops, and also is one of the crops which needs more water, so the
yield and quality of rice will be affected by long term water stress. It is significant for protecting
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