Analysis on the Relationship Between Litchi Canopy Temperature and Air Temperature in Winter
The relationships among the air temperatures of litchi orchard,canopy and observation station in four weather types,i.e.the sunny,cloudy,rainy,and cloudy to sunny cases were anaIyzed based on field data in winter,2007/2008 and 2008/2009.The results showed that the canopy temperature changes between daytime and nighttime were the largest in the sunny case,in the cloudy to sunny case the temperature changes between daytime and nighttime were the sacond,however,in the cloudy or rainy case the temperature changes between daytime and nighttime were smoothly.In the same time,the orchard and observation station temperature changes between daytime and nighttime were closely related with weather types.The linear or eurvilinear regression relationships of observation station and canopy temperatures were set up for daytime and nighttime and the whole day based on different weather types. The results showed that the relationship models for cloudy and rainy cases and advection cold chilling were better than sunny and cloudy to sunny cases. In all models, the models of nighttime were the best. The results of this research show that it is feasible to monitor litchi cold chilling and frozen injury with air temperature of observation station.
litchicanopy temperatureair temperaturecold chillingfrozen injuryweather type
国家科技期刊平台
NSTL
万方数据
维普
