EFFECT ASSESSMENT OF LOW TEMPERATURE WATER IN RESERVIOR ON THE GROWTH OF WHEAT
In China, the ecologic impacts ofhydropower development have drawn the societys great attention, especially, the impact assessment of low-temperature water for huge reservoir is the necessary chapter in the assessment statements. Selecting two fields abutting each other, irrigation experiment was conducted on wheat using two water resources with the same irrigation quota and quality; the effect of irrigation water temperature on soil temperature and the growth of wheat was studied. The results showed that the difference of soil temperature was less than 1 ℃ in 0 to 20 cm depth when two sorts of water resources with the temperature difference of 6 to 8 ℃ were irrigated, and moreover, that there were no significant change in the yield per hectare, growing period, population dynamics and basic characteristics of yield evaluation. Finally, the detailed mechanism analysis to the test result from the two aspects of the ground temperature change rule and the plant growth characteristics to temperature requirements were made to draw conclusions: (1) air temperature is the controlling factor on the soil temperature; (2) the impact of low temperature water on wheat growth in the nutrient stage is not obvious.
reservoir low-temperature water soil temperature irrigation
Jiapeng Wu Yusheng Huang Kaiqi Chen
Department of Water Environment, China Institute of Water Resources and Hydropower Research,Beijing, Northwest Hydro Congsuiting Engineers,CHECC, Xian, China Appraisal Center for Environment & Engineering of State Environmental Protection Ministry,Beijing, C
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
459-464
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）