四川秦巴山区引种丛生竹冻害初报

笋竹产业是四川秦巴山区生态经济建设的重要切入点，丛生竹引种及资源培植是构建区域笋竹基地周年产笋的关键。冬季低温冻害是丛生竹引种及资源培植的主要制约因子。通过对12个竹种定植3年的冻害监测分析，各丛生竹均有不同程度的冻害，冻害程度在不同的地点、不同的竹种和不同的丛龄间存在极显著差异。纬度梯度冻害程度要大于海拔梯度，但任山地立地条件下，海拔控制尤为重要。推荐了5个适宜四川秦巴山区域低山河谷、丘陵区立地条件的丛生竹竹种。

A Preliminary Study on Frozen Damage to Introduction of Sympodial Bamboos in Qinba Mountains Area, Sichuan Province

This paper analyzed frozen damage to 12 sympodial bamboo species, which were introduced into the Qinba mountainous area, Sichuan Province, in the year of 2002 and had been monitored for their injury by low air temperatures in 3 winters in the years of 2002, 2003 and 2004. The results showed that all of 12 bamboo species were injured to a certain degree, which was very significantly different among 4 sites or12 species or I to 3-year-old clumps. Effects of altitudes gradient on frost injury should deserve extra attention, although the injury to the bamboos at different sites located at different latitudes was to a greater degree than at different altitudes at same site. Recommendable are 5 sympodial bamboo species which can be adaptable to valley and hill sites in the Qinba mountainous area, Sichuan Province.