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对四川省宝兴县蜂桶寨自然保护区调查研究,结果表明:冷箭竹生长在针叶林下,土壤类型属于灰土纲的灰壤,具明显的A_0、A_1、A_2和B层,pH3.74～4.85,铁质淋溶明显;大箭竹生长在针叶与落叶阔叶混交林下,土壤属酸性棕壤,全剖面棕一黄色,分化不甚明显,有机质含量高,酸性强;刚竹属竹类生长在海拨1800m以下的黄棕壤上,有黄棕色心土层,游离铁含量高。冷箭竹生长旺盛的土壤整个土层强酸性,盐基饱和度低;冷箭竹生长不良和开花死亡的土壤则为中性偏碱,盐基饱和度高。土层中砾石多也会导致箭竹开花死亡。
The results showed that the cold-type bamboo grows under the coniferous forest, and the soil type belongs to the gray soil class, with obvious A0, A_1, A_2 and B layers and pH3. 74 ~ 4.85, the leaching of iron is obvious. The Euphratica grows under the mixed forest of coniferous and deciduous broadleaved soils, the soil is acidic brown soil, the whole section is brownish-yellow, the differentiation is not obvious, the content of organic matter is high and the acidity is strong. Is a bamboo growing in 1800m above sea level yellow brown earth, yellow brown heart layer, high free iron content. The growth of cold bamboo strong soil throughout the strong acidity, salt-based low saturation; Cryptocarychu bad growth and blooming death of the soil is neutral to alkaline, salt-based high saturation. More gravel in the soil can also cause the bamboo to bloom and die.