Ground distribution of light and temperature under furrow irrigation methods and ridging directions
Li Caixia1, Zhou Xinguo1, Sun Jingsheng1, Qiu Xinqiang2, Li Xinqiang1
1.Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences/Key Lab for Crop Water Requirement and Regulation of Ministry of Agriculture, Xinxiang, Henan 453002, China; 2.Henan Provincial Water Conservancy Research Institute, Zhengzhou, Henan 450003, China
Abstract:An experiment was conducted to present distributions of the ground temperature and light under various furrow irrigation methods and ridging directions. Light-temperature within maize field in south-north and east-west ridging directions under alternate furrow irrigation and conventional fu-rrow irrigation methods were respectively studied by measurements of solar radiation and temperature in different positions of the field. The results show that ground solar radiation quantity within maize field in east-west ridging direction is of 23.05-122.48 W/m2 more than that in south-north direction. Compared with the same condition of ridging direction but under conventional furrow irrigation method, the average ground solar radiation quantity is of 80.23 W/m2 more than under alternate furrow irrigation method. The variations of ground surface temperature are in accordance with solar radiation. Daily mean ground temperature is of 0.60-3.46 ℃ higher in east-west ridging direction. And ground temperature is of 2.23 ℃ higher under alternate furrow irrigation method in the same ridging direction. Ground light and heat resources are fully exploited by taking advantages of east-west ridging direction and alternate furrow irrigation method. As a result, field temperature and light will be regulated by altering cultivation methods or irrigation methods to meet different crops requirements.
李彩霞, 周新国, 孙景生, 邱新强, 李新强. 不同沟灌方式及沟向条件下地面光温分布规律[J]. 排灌机械工程学报, 2013, 31(12): 1095-1099.
Li Caixia, Zhou Xinguo, Sun Jingsheng, Qiu Xinqiang, Li Xinqiang. Ground distribution of light and temperature under furrow irrigation methods and ridging directions. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(12): 1095-1099.
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