Sprinkler irrigation system for tea frost protection and the application effect
作者机构：Key Laboratory of Modern Agricultural Equipment and TechnologyJiangsu UniversityZhenjiang 212013China College of Biology and the EnvironmentNanjing Forestry UniversityNanjing 210037China
出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)
年 卷 期：2016年第9卷第5期
页 面：17-23页
核心收录：
学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学]
基 金：Key R&D Program,Jiangsu Province(BE2016354) Jiangsu Agriculture Science and Technology Innovation Fund(CX(16)1045) Priority Academic Program Development of Jiangsu Higher Education Institutions(2014-37)
主 题：sprinkler irrigation frost protection Camellia Sinensis L application rate temperature rise frost damage
摘 要：A sprinkler irrigation system was designed and applied for a tea field to achieve frost protection through latent heat release when water turning into *** protection effects during night were tested at different irrigation application rates by monitoring air temperature around tea canopy(Tc).Temperature sensors were arranged at different distances from the *** preliminary results showed that,when the sprinkler system worked continuously at the application rate of 2-4 mm/h before sunrise,tea canopy was covered with ice and Tc remained around 0℃,preventing tea plants from frost *** no more temperature rise was obviously observed at the application rates above 4 mm/h,which means less cost *** system was stopped after sunrise when background air temperature rose back to 0℃and Tc increased by 2.2℃in one hour,while Tc of non-irrigated area increased by 4.8℃,which might cause thawing injuries to tea *** leaf surface temperature was lower than Tc,and the difference between the leaf surface temperature and Tc decreased with the increase of application ***,the sprinkler irrigation system could achieve tea frost protection,and the recommended application rate was 2-4 mm/h for better protection *** system should keep running throughout frost night till half an hour after *** start and stop of the sprinkler irrigation system should be controlled based on Tc.
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