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七五/七六年冬河口垦区遭受了以辐射低温为主的特大寒潮,橡胶树受到了严重寒害,损失很大。不耐寒的品系如PB86、RRIM600等除有不少胶树整株枯萎外,尚有半面枯,局部枯及爆皮流胶等类型。为了了解寒害后的变化和愈合情况,几年来我们进行了一些观察和调查,今将结果概述于后。
In the winter of 1975 and the Hekou reclamation area, the severe cold caused by low temperature radiation has suffered and the rubber tree has suffered severe cold damage with great losses. Not cold-resistant strains such as PB86, RRIM600, etc. In addition to a lot of gum trees withered the whole plant, there are still half dead face, dry blisters and other parts of the gel and other types. In order to understand the changes and healing after cold damage, we have conducted some observations and surveys in the past few years, and the results are summarized below.