PR107品种不同割龄与单株产量关系初步研究——以国营阳江农场为例

Correlation Studies Between Different Tapping Ages and Individual Rubber Yield of Clone PR107-A Case Study in Yangjiang State Farm

以国营阳江农场为例，采集2010～2011年度5845个橡胶树PR107品种树位产量，涵盖40个割龄，通过空间置换时间的方法，研究PR107不同割龄与单株产量的关系。结果表明：PR107品种株产均值为3．21kg，0—10和21～30割龄的树位是阳江农场PR107品种的主要割龄分布区间。PR107品种整个生长期株产随割龄的变化总体呈“M“型趋势变化，可分为2个阶段，高值分别位于11～12和27～29割龄区间，用分段非线性模型对0～17割龄和18～35割龄PR107单株产量与割龄关系进行拟合，R^2分别为0．90和044，均达到显著水平。

Correlation between different tapping ages and individual rubber yield was studied by trading space for time in Yangjiang State Farm. Rubber yield of 5 845 individual plant in 2010-2011 for 40 different tapping ages was collected . Results showed that the mean individual rubber yield of clone PR107 was 3.21 kg. The tapping ages of 0-10 and 20-30 were the main tapping ages. The trend of individual rubber yield of clone PR107 showed a ＂M＂ type with the changing tapping ages in the whole growing periods and could be divided into two stages. The two highest values were in the 11-12 and 27-29 tapping ages. The correlation between different tapping ages and individual rubber yield of clone PR107 could be well fitted by a divided non-line model, with a coefficient of 0.90 and 0.44 respectively.