Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2018, Vol. 34 ›› Issue (7): 134-140.doi: 10.11924/j.issn.1000-6850.casb17070051

Special Issue: 农业气象

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Meteorological Factors and Shallow Soil Moisture of Different Textures in Sichuan: Correlation Analysis

  

  • Received:2017-07-11 Revised:2018-01-16 Accepted:2018-01-25 Online:2018-03-07 Published:2018-03-07

Abstract: In order to further predict and quantitatively evaluate the impact of meteorological factors on soil moisture in different soil textures of crops area in Sichuan. Based on the soil moisture and meteorological data, the authors discussed the effect of 5 meteorological factors on shallow soil moisture (10 cm) of 10 different textures with grey correlation analysis. The results showed that: the grey correlation order of different meteorological factors was different, and wind speed and humidity had relatively great influence on shallow soil moisture; under the no rainfall weather condition, humidity and wind speed had great influence on sandy soil and loam soil, while temperature and ground temperature had little influence on sandy soil, and sunshine had the least influence on loam; humidity had the greatest influence on clay, with the least influence of temperature, followed by ground temperature; under rainfall weather condition, humidity and wind speed had great influence on sandy soil, and the effect of temperature and sunshine duration on sandy soil were less; different meteorological factors had different effects on loam soil, but only sunshine duration was relatively stable; the influence of temperature and sunshine duration on clay was relatively big, with less ground temperature. Therefore, according to the different textures and weather conditions, finding out the main factors and the degree of influence to better grasp the rules of soil moisture change, effectively and rationally use the soil water resources.

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