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原产于南美洲亚马逊河盆地热带雨林中的巴西橡胶树,从高而恒定的温度(年平均气温为26℃～27℃,年温差在3℃以内);多而均匀的雨量(年降雨量2500毫米左右)和高湿(相对湿度达90%以上)以及较为静风条件的南纬5°左右迁移到北纬25°左右地区,向北推移达30℃,约3000公里.就我国植胶地华南四省区气候条件而言,与原产地有很大的差异,有的甚至截然不同.冬季低温造成的橡胶寒害是突出的矛盾.地处北部垦区(北纬23°36＇～24°45＇)的我省尤其如此(年平均气温20.8～21.3℃,雨量1032.3～1723.6毫米,相对湿度78～80%).植胶24年来,遭受较大的寒害五次(即1962/63、66/67、67/68、73/74、75/76),
From the high and constant temperature (annual average temperature of 26 ℃ ~ 27 ℃, the annual temperature difference is within 3 ℃); more and more uniform rainfall (annual rainfall of 2500 Mm or so) and high humidity (relative humidity above 90%) and relatively quiet wind conditions about 5 ° south latitude migrate to about 25 ° north latitude, northward push up to 30 ℃, about 3000 km. The climate conditions in the four provinces and autonomous regions, there is a great difference with the origin, and some even completely different.Hold cold caused by winter cold rubber injury is a prominent contradiction.Located in the northern reclamation area (latitude 23 ° 36 ’~ 24 ° 45’) Especially in our province (annual average temperature is 20.8 ~ 21.3 ℃, rainfall is 1032.3 ~ 1723.6 mm and relative humidity is 78 ~ 80%). In the past 24 years, the plantation suffered larger cold damage five times (1962/63, 66/67, 67/68, 73/74, 75/76),