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培育速生丰产林是提高木材生产的有效途径,为营造速生丰产林取得可靠数据,丰镇县造林站于1977年进行了营造试验,经过七年的时间,已达到椽材标准,现提出椽材阶段小结如下。一、营造方法和经营管理情况营造时间为1977年5月1日,地点在丰镇县元山林场。当地海拔1400米,地势平坦,土质为淤积砂壤土。植树前为耕地,种植小麦、莜麦,产量60斤左右,肥力很低。据内蒙古土肥站化验,林地内土壤养分含量有机质0.445％,含氮0.033％,速效磷2 PPM,土壤养分含量属于6级,为最低一级(分
Fostering fast-growing and high-yielding forests is an effective way to improve the timber production, in order to create reliable data for fast-growing and high-yielding forests, Fengzhen afforestation station in 1977 to create a test, after seven years, has reached the standard rafter, rafter is now proposed Stage summary is as follows. First, to create a method and management Create a time for the May 1, 1977, the location in Fengzhen County Yuanshan forest. The local elevation of 1400 meters, flat, soil siltation of sandy loam. Before planting trees for arable land, planting wheat, oatmeal, yield about 60 pounds, low fertility. According to soil and fertilizer tests in Inner Mongolia, soil organic matter content in forest was 0.445%, nitrogen content was 0.033%, available phosphorus was 2 PPM, and soil nutrient content was in 6 levels, which was the lowest level