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云南垦区分布着众多的山间盆地,通常叫坝子。这些盆地(坝子)冬季温度变化规律如何?对橡胶栽培有什么影响?就我们考察的材料,概述如下: (一)一个坝子有大阳坡和大阴坡之分(冬季温度水平方向的变化)。 坝子不论大小形状如何,坝缘丘陵山地,其位置均有东南西北之分。其中向南坡面(为了和山岗的向南坡区别),我们称之为大阳坡;向北坡面,我们称之为大阴坡。同一坝子,在两个不同坡面上,橡胶树寒害差异却极为显著,向北坡面寒害重,而向南坡面寒害轻。这“轻”“重”反映出南北坡面存在着小气候(尤其是温度因子)的差别。 地球绕太阳公转的轨道面和地球赤道面是有一定倾斜角度的,这个角度为23.5度。
Yunnan reclamation area with many mountain basins, usually called Bazi. What are the effects on the cultivation of rubber in these basins (Bazi)? How are the effects on the cultivation of rubber? The materials we have reviewed are summarized as follows: (1) A bazi is divided into a large sunny slope and a large cloudy slope (changes in winter temperature level) . Regardless of the size and shape of the dam, dam edge hills and mountains, its location is divided into Southeast Northwest. Among them, the south slope (in order to distinguish it from the south slope of the hill), we call it the great sunny slope; to the north slope, we call it the great shade slope. The same dam, on two different slopes, rubber tree chilling differences are extremely significant, severe harm to the north slope, and cold light on the south slope. This “light” and “heavy” reflect the difference between the microclimate (especially the temperature factor) on the north and south slopes. The Earth’s orbit around the sun and Earth’s equatorial plane is a certain angle of inclination, this angle is 23.5 degrees.