Impact of different water-saving irrigation technologies on soil temperature of pear orchard
In order to evaluate impact of different water-saving irrigation technology on soil temperature of pear orchard,temperature diurnal variation and its variation patterns at different soil depth were analyzed by monitoring soil temperature under different irrigation techniques at Bazhou Irrigation Test Station of Xinjiang Uygur Autonomous Region.The study results showed at 5 cm soil depth,the loop,a small tube and microjet had average temperature increase of 2.3 ℃,0.8℃ and 1.5℃ respectively,compared to the control (25.1 ℃).Among the all different treatments,5 cm surface depth soil had the highest temperature increase,order of temperature increase using different irrigation techniques is annular tube ＞ small pipe flow ＞ ejecta ＞ control.The maximum temperature difference are 5.5℃,5℃,5℃ and 4℃.Among all the different treatments in different growth period,soil temperature showed the trend of increased at first and then decreased.At surface 5 cm to 10 cm soil,temperature increasing range at flowering to fruiting period is larger than in other periods.Annular tube irrigation technique gained the highest mean temperature value at different growth stages of different depth of soil.Soil temperature showed difference at different growth stages with small pipe flow and ejecta irrigation techniques.Compared to all the different irrigation techniques,control had the smallest mean soil temperature at different growth period of different soil depth.In conclusion,the analysis showed that applications of all these water-saving irrigation technologies can improve geotemperature.
pearwatet-saving irrigationsoil temperatureBazhou of Xinjiang
国家科技期刊平台
NSTL
万方数据
维普
