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檫树过来均系天然混生,我县从60年代开始大面积营造人工林,一般密度过大,成林易而成材难,大部分都长成竹竿材。我们于1973年春在云乐观工区营造了个块檫树速生丰产试验林,面积64.6亩,位于海拔700—800米的山岭北坡,坡度20—30度,土质属石灰岩山地中层黄壤土,整地全部是66×66厘米等高撩壕,造林密度分2.7×2.5米和3.3×3.3米,每亩100株和
Trees come from are mixed naturally, my county from the 1960s to create a large area of plantations, the general density is too large, easy to become a timber and difficult, most of them grow into bamboo. In the spring of 1973, we built a large-scale test plantation of fast-growing and yielding banyan tree in Yunleoguan Industrial Zone with an area of 64.6 mu. It is located at the north slope of 700-800 meters above sea level with a gradient of 20-30 degrees. The soil is limestone mid-level yellow loam soil, Is 66 × 66 cm height trenches, afforestation density of 2.7 × 2.5 meters and 3.3 × 3.3 meters, 100 plants per mu and