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叉子圆柏(Sabina vulgaris Ant.)又名臭柏,沙地柏。具有抗旱、抗寒、耐瘠薄等特性。由于长期处于不良的生态环境下,授粉不良,结实量较少,加之种子不易发芽,育苗困难,因此,达一树种发展较慢,而扦插法繁殖较播种育苗成活率高。1985年我们在扦插育苗成功的基础上,又进行了带踵扦插试验。一、试验地自然概况试验地设在延安树木园苗圃移植区,海拔971米。土壤属于沙土,透水性强,保水保肥力差,易板结;有机质含量为0.363%,全氮0.11%,全磷0.12%,pH8.43;年平均温度9.3℃;年降水量572.3毫米,蒸发量1,607.9毫米;无霜期180—190天。
Fork Sabina (Sabina vulgaris Ant.) Aka Sabina vulgaris, Sabina. With drought, cold, barren and other features. Due to long-term poor ecological environment, poor pollination, less stubble, coupled with the seed is not easy to germination, nursery difficulties, therefore, the development of a species of slower growth, and cutting propagation than sowing seedling survival rate. In 1985 we cuttings based on the success of breeding, but also with a heel cutting test. First, the experimental nature of the test site located in Yan’an Arboretum Nursery transplant area, 971 meters above sea level. The soil belongs to sandy soil, which has strong water permeability, poor water-holding and fertility, and easy-knot. The organic matter content is 0.363%, total nitrogen 0.11%, total phosphorus 0.12%, pH8.43, annual average temperature 9.3 ℃, annual precipitation 572.3 mm, 1,607.9 mm; frost-free period 180-190 days.