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在冬半年(9～2月),对广西南宁市郊杧果园内及空旷地主要气象要素进行对比观测,结果表明,①果园内日平均光照强度为7 390 lx,比空旷地(13 830 lx)减少46.6%。②果园内日平均气温为21.3℃,比空旷地(21.5℃)低0.2℃;气温日较差比空旷地低0.1℃。③果园内土壤浅层(0～20cm)日均温为20.4～21.1℃,比空旷地(23.3～24.4℃)低1.8～2.8℃;果园内土温日较差为0.5～6.8℃,比空旷地(1.3～12.8℃)低0.8～6.0℃。④果园内日均相对湿度为77%,比空旷地(74%)高3%。⑤果园内日均风速为0.26m/s, 比空旷地(1.25m/s)低79.2%。观测数据表明,杧果园内光照强度减弱、温度日较差降低、相对湿度升高、风速减少的效果极为显著。
In the winter half year (from September to February), the main meteorological elements in the orchards and open areas in the suburbs of Nanning, Guangxi Province were compared. The results showed that: ① The average daily light intensity in the orchard was 7 390 lx, 13 830 lx, A decrease of 46.6%. ② The average daily temperature in the orchard is 21.3 ℃, 0.2 ℃ lower than the open area (21.5 ℃); the temperature difference is 0.1 ℃ lower than the open area. ③The average daily temperature of shallow layer (0 ~ 20cm) in the orchard is 20.4 ~ 21.1 ℃, which is 1.8 ~ 2.8 ℃ lower than the open area (23.3 ~ 24.4 ℃) Ground (1.3 ~ 12.8 ℃) low 0.8 ~ 6.0 ℃. ④ The average daily relative humidity in orchards is 77%, which is 3% higher than the open area (74%). ⑤ The average daily wind speed in the orchard is 0.26m / s, 79.2% lower than the open area (1.25m / s). Observational data show that the diminishing light intensity in 杧 orchard, the lower the temperature day, the relative humidity increases, the wind speed reduction effect is extremely significant.