陕西商洛土壤对核桃生长的影响试验

试验表明：核桃树在砂壤土上生长最好，当年成活率为99％，1O年后保存率为86％、平均高6．5m、干径8．2cm；黄褐土上坡度为20°时，栽植当年成活率为88％，1O年后保存率为85％、平均高5．5m、平均干径5．2cm；对黄褐土采用全面扩盘技术的6年进入结果期，1O年进入稳定结果期，是低效林改造、林下管护中理想的科管方式。

The Influence of Soil in Shangluo on Walnut Growth

Experiment shows that walnut trees are most suitable for growing on sandy loam, with average height of 6.5 m, dry diameter of 8.2 cm and survival rate of 99% in the current year, which is 86 % after ten years. The survival rate is 88% in the current year and 85 % after ten years for walnut trees planted on yellow cinnamon soil with slope 20~with average height of 5.5 m, dry diameter of 5.2 cm. The tree come into fruit period in the 6th year after adopting comprehensive disk enlargement technology on yellow cinnamon soil, and are stable in the 10th year. So it＇s scientific management method for rebuilding low function forest and forest maintenance.