【摘要】 对1992年种植的云研系列9个品种在高级试验系比的观察结果表明,生长量较对照RRIM600高的是云研73-477,20龄树150 cm处平均围茎74.2 cm,为对照RRIM600的106.9%,生势中等,其余品种均较对照生长慢;产量较高的是云研76-235、云研80-1983、云研78-768,11割年平均单株产胶量分别为4.5、4.4、4.3 kg,为对照RRIM600的137.4%、134.2%、130.7%;参试的9个品种死皮均较对照RRIM600重,为不耐刺激割胶品种;抗寒性方面,除云研73-477与对照GT1相当,属中等抗寒品种外,其余品种均比对照RRIM600弱,为不抗寒品种。更多还原

【Abstract】 Comparative experiment of nine rubber varieties planted in 1992 was conducted on large scale. Compared to control(RRIM600), the increment of Yunyan 73-477 was high and its average stem girth of 19-year tree was 73.01 cm at 150 cm above the ground, which was 108.52% of the control with a medium growth, while the other varieties grew slower than the control. The yield of Yunyan 76-235, Yunyan 80-1983 and Yunyan 78-768 were higher, with an individual average latex yield of 4.5 kg, 4.4 kg and 4.3 kg respectively at 11 tapping ages, which was 137.4%, 134.2% and 130.7% respectively compare with that of the control. Nine tested varieties had more severe tapping panel dryness than the control, manifesting the intolerance to tapping stimulus. As to the cold resistance, Yunyan 73-477 was equivalent to the control GT1, belonging to medium cold-resistant variety, while the others were weaker than the control and belonging to non-cold resistant varieties.更多还原