摘要
分析了玉米开花期间的边界层温湿风等特征量,结果表明,温度和湿度一般与高度呈相反的变化趋势,并且湿度廓线与理查森数的变化有较好的对应性,能够粗略地反映湍流的稳定度;在200~300 m高空,风速一直很大,可以推测在此高度存在一个较强的大气扩散区;观测期间,温度在18.5~32.0℃时,风速在0.8~5.8 m/s,风向稳定且以偏北风为主,十分有利于玉米授粉。
The characteristics of boundary layer during the maize lowering were studied.Results suggested that temperature and humidity had opposite changing trend with height,and there were a good number of correspondences between humidity profiles and Richardson profiles which roughly reflected the turbulence of stability.In the height of 200-300 m,wind speed was fast,and there was an atmospheric diffusion zone.During the observation period,temperature was 18.5-32 ℃,wind speed changed from 0.8 to 5.8 m/s.Wind direction was steady and mainly was northerly wind,which was conductive to the pollination of corn.
出处
《安徽农业科学》
CAS
2012年第3期1392-1399,共8页
Journal of Anhui Agricultural Sciences
基金
转基因生物新品种培育重大专项(2009ZX08011-019B)
国家自然科学基金项目(40975072)
关键词
玉米开花
转基因漂流
边界层特征
系留气艇
Corn flowering
Transferred gene flow
Boundary layer characteristics
Air boat mooring