2009年天然橡胶市场综述

调查热研7-33-97、PR107、RRIM600 3个品种橡胶树的不同割龄胶园单位面积存株数情况,并对存株类型进行归类。结果发现,存株类型可归类为正常割株、风害停割株、寒害停割株、割线干涸及产量挖潜株(阳线停割株、阴线割株、整树割线干涸停割株)、林下株、缺株等类型。其中热研7-33-97的1、5、10割龄的单位面积有效割株率分别为96%、85%、71%;PR107的1、12、14、16、20、24割龄的单位面积有效割株率分别为96%、67%、70%、75%、66%、46%;RRIM600的16、20割龄的单位面积有效割株率分别为64%和48%。文中还对对有效割株和其它存株类型进行了初步分析。

An Investigation on Unit Area Effective Tapping Plants of Rubber Plantations

Investigations were made on the unit area keeping plant types of three varieties "Reyan 7-33-97","PR107" and "RRIM600". The results showed that keeping plant types included normal tapping plants, stopped tapping plants as a result of wind injury, cold injury, tapping panel dryness, intensive tapping, as well as null plants and void plants. Of the three investigated varieties, the unit area effective tapping plant rate of "Reyan 7-33-97" at the 1st, 5th and 10th tapping year was 96%, 85% and 71%, respectively. The unit area effective tapping plant rate of "PR107" at the 1st, 12th, 14th, 16th, 20th, 24th tapping year was 96%, 67%, 70%, 75%, 66%, 46%, respectively. The unit area effective tapping plant rate of "RRIM600" at the 16th, 20th tapping year was 64%, 48%, respectively.