西双版纳橡胶树死皮病症状调查

Investigation on Tapping Panel Dryness in Xishuangbanna

调查西双版纳RRIM600和GT1两个品种橡胶树的不同割龄段死皮树的症状,根据排胶、割线颜色、树体状况三个方面的症状表现,死皮病典型症状可归纳为点状排胶或割线干涸,割线褐色、暴皮三种表现,其中RRIM600死皮树表现割线干涸和点状排胶的分别为41.7%和45.3%,割线表现内褐、褐皮平均分别为42.7%和35.2%,树体多数表现为块状暴皮,平均达44.8%;GT1死皮树症状以割线干涸为主,占61.9%,其次为点状排胶,占23.9%,割线表现为褐皮、内褐的分别占29.5%和44.9%,树体多数表现为短裂纹状暴皮,平均达34.1%。文章还对死皮病病程、诱因进行探讨。

Investigation on tapping panel dryness of two rubber clones RRIM600 and GT1 was carded out in Xishuangbanna. The results showed that latex would flow a drop at a time and tapping panel getting dry in brown cracking according to its symptoms in affected tree. Of two tested clones, it reaches 41.7 % and 45.3 % respectively with TPD and latex droppings in clone RRIM600, brown bark and inner brown bark on panel averaged 42.7 % and 35.2 %, most of the affected trees showed bark-cracking in a percent of 44.8. Clone GT1 has more panel getting dry accounts for （61.9%） under TPD condition, then is the latex droppings（23.9 %）. It would be 29.5% and 44.9 % respectively with brown bark and inner brown bark on panel, most of the affected trees showed bark-cracking, it averaged 34.1%.