早熟高产品种热研8-79在云南孟定农场试种初报

Preliminary Trial Report on Early-maturing and High-yielding Clone of Reyan 8-79 in Mengding State Farm of Yunnan Province

为筛选适合云南垦区的高产且适应性好的优良品种,对引种在孟定农场的热研8-79进行10余年的系统鉴定。结果表明:热研8-79保苗率高,达到98%;前期生长快,达到8.17 cm/a,优于对照,而开割后茎围生长明显放缓;早熟且单产较高,第4割年即达到7.10 kg/株和每2 461.50 kg/hm^2,均约为对照的300%,干胶含量从年初到年末整体上逐步降低,而株干胶产量在5月、7月和10月出现阶段高点;死皮率低于云研77-4,但比GT1高,抗阵风能力与云研77-4相当。热研8-79在该试区整体上体现出了早熟、高产的特性,并且表现出了非常好的适应性。鉴于热研8-79在云南孟定农场良好的试种表现,建议在孟定农场或与之植胶环境条件相似的I类植胶区扩大试种规模。

The Adaptability test of Reyan 8-79 of had been systematically observed for ten years. The results showed that seedling survival rate reached 98 percent, its annual growth before opening achieved 8.17 cm per year which was higher than the control, whereas its annual growth became the slower after tapping. Reyan 8-79 was a early-maturing and high-yielding clone with annual yield 7.10 kg per tree and 2 461.50 kg per hectare in its 4rd tapping year, almost 300% over of the control. The trend of dry rubber content for a whole tapping year decreased smoothly and reached a phasic culmination in July and October. Its TPD rate was lower than YITC 77- 4 and higher than GT1, and the resistance to wind damage was similar with YITC 77-4. As a whole, Reyan 8- 79 performed characteristics of early-maturing and high-yielding and fine adaptability planting in Yunnan. In view of superior filed performance of Reyan 8-79, it was suggested to enlarge its planting scale in the planting area of I class such as Mengding State Farm.