Daily maximum fruit surface temperatures in relation to main meteorological factors in apples
A significant relationship was found between daily maximum fruit surface temperatures and main meteorological factors including air temperatures, solar radiation, wind velocity and relative humidity. By means of monitoring the temperatures of fruit on southwest canopy of sample trees in situ nearly all growing season and comparing corresponding weather data, a high correlation has been proved between them. High fruit temperatures(>45℃)resulted mainly from both high air temperatures and intensive solar radiation. In most cases, both factors could determine whether "high fruit surface temperatures" would happen but air temperature played a more important part. In a calm and sunny day, the "high fruit surface temperatures" frequently occurred from 13:30 to 15:50. The comprehensive conditions, on the basis of average weather data from 10:00 to 16:00, for fruit to attain "high fruit surface temperatures" is as follows: solar radiation >580 W/m2;air temperature >31.8℃; wind velocity <1.0 m/s and relative humidity < 30%. All of the four meteorological factors examined are highly correlated with fruit surface temperatures, as expressed as the following multi-regression equation: Fruit surface temperature (℃) = 19.7+0.842×Air temperature (℃)+ 0.00989×Solar radiation(W/m2) - 2.08×Wind velocity(m/s ) -0.148×Ralative humidity(%), r2=0.697.
applefruitmaximum fruit surface temperaturemeteorological factorscorrelation
张建光、刘玉芳、孙建设、施瑞德、谭格瑞
展开 >
河北农业大学园艺学院,保定,071001
美国华盛顿州立大学乔木果树研究与推广中心,威纳奇,华盛顿州,98801
苹果 果实 果实最高表面温度 气象因子 相关性
project of Washington Apple Research Commission河北农业大学校科研和教改项目
国家科技期刊平台
NSTL
万方数据
维普
