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龙溪地区三面环山,高者海拔9173米(天宝大山).中者775.0米(五峰山)、低者460.7米(大帽山),三个山脉相连,成为东南开口的马蹄形.香蕉种植地有平地、洼地、山坡、山谷,还有有屏障物和无屏障物等地.1985年冬～1986年春,是历年来香蕉霜冻最严重的一次.初霜出现在1985年12月16日,终霜冻出现在1986年8月5日.霜日最低气温0.2℃,日平均气温6.6℃,1985年12月,1986年1、2、3月,各月平均气温为13.6、12.0、11.3、14.1℃,比历年同期各月平均气温的14.6、12.8、13.3、16.0分别少1.0、0.8、2.0、1.9.调查香蕉总株数5678株,其中死亡1899株,占33.4%.由于海拔高度、地形、坡向、屏障物,遮盖、栽培、田管不同,香蕉遭受冻害的程度也有差别.
Longxi area surrounded by mountains on three sides, the highest elevation of 9173 meters (Tianbao mountain.) The middle of 775.0 meters (Wufeng Mountain), the lower 460.7 meters (Tai Mo Shan), three mountains connected to become southeast open horseshoe-shaped banana plantation There are flat, depression, hillsides, valleys, there is a barrier and no barrier and other places .1985 winter ~ 1986 spring, over the years is the most serious banana frost once the first frost appeared in December 16, 1985, and finally The frost appeared on August 5, 1986. The minimum temperature of frost day 0.2 ℃, the average daily temperature of 6.6 ℃, December 1985, January, January and February 1986, the average monthly temperature of 13.6,12.0,11.3,14.1 ℃ , Respectively, less than the average temperature of 14.6,12.8,13.3,16.0 over the same period of previous years, respectively, 1.0,0.8,2.0,1.9 survey banana total number of 5678 strains of plants, of which 1899 deaths, accounting for 33.4%. Due to altitude, topography, aspect , Barrier, cover, cultivation, field tube different degrees of banana suffered frost damage are also different.