| Research on the change rule of cotton leaf temperature by drip irrigation under film and relationship with the meteorological factors |
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| DOI：10.7606/j.issn.1000-7601.2014.05.004 |
| Key Words: leaf temperature of cotton meteorological condition soil water content difference of leaf air temperature drip irrigatio under film |
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| Abstract: |
| Through the measurements of the leaf temperature and soil water content for each row in the cotton experiment field by drip irrigation under film of the 148 Regiment, Shihezi City, Xinjiang, and collection of the cotton developing situation for each row and local meteorological data, utilization of the fitting function of the Origin 7.5, the relationships between the cotton leaf temperature with
local climate data, the leaf temperature and soil water content with the cotton growing and developing situation have been analyzed in order to discuss how to increase the cotton yield under this planting pattern. The research results showed that: The relativity of cotton leaf temperature with air temperature, the sequence from high to low in turn are air temperature, difference of air saturated vapor pressure, relative humidity, sunshine hours, and wind velocity. Among them, the correlation coefficient between cotton leaf temperature with air temperature was 0.91327, this fitting equation can be used to forecast the cotton leaf temperature. In addition, the cotton leaf temperature will be decreased with the soil moisture.increasing. Under the planting pattern in this research as “One film with two pipes, one pipe with three rows”and“66+10”, the cotton row with
lower leaf temperature would be a better growing and developing situation, also obtained higher yield. Therefore, suggested that at the middle two rows of cotton should be moved close to the drip pipe, so as to increase the cotton yield under this planting pattern in the research. |
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