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陕西省宜川县于1976—1978年进行了油松飞播造林试验,据1979年有关方面鉴定,取得了初步成功。1980年以后,又在该县及邻近县进行了生产性试播。研究试验区油松幼苗的分布规律,分析不同生境的成苗效果,将为大面积绿化荒山、加快水土流失地区的治理进程提供依据。一、试验区的自然概况试验区位于宜川县城附近,地处黄龙山东侧,系梁状丘陵区。海拔900—1,250米。一般坡度为15°—30°。土壤为褐色土,土层深厚。植被为暖温带落叶阔叶林。年平均气
Yichuan County, Shaanxi Province in 1976-1978 for pine afforestation afforestation test, according to identification of relevant parties in 1979, achieved initial success. After 1980, another pilot production was conducted in the county and adjacent counties. Studying the distribution rules of Pinus tabulaeformis seedlings in the experimental area and analyzing the effect of seedlings in different habitats will provide the basis for large area afforested barren hills and accelerating the process of soil and water erosion control. First, the natural conditions of the pilot area The experimental area is located near Yichuan County, located in the eastern side of Huanglong Mountain, the Department of beam-shaped hilly area. 900-1,250 meters above sea level. The general slope of 15 ° -30 °. Soil is brown soil, deep soil. Vegetation is temperate deciduous broad-leaved forest. Average annual gas