柞水县是陕西省板栗主要产区县之一,所产大红板栗即镇安大板栗为我国北方品种群中久享盛名之品种。板栗栽培在柞水已有2000余年的历史,在漫长的生产过程中,人工嫁接栽培的为数很少,绝大多数靠天然更新传种接代,形成了雄厚的野生板栗资源,急待改造利用。据农业区划调查,目前全县尚有野生板栗资源1万余亩,约40万株,其中5000亩约20万株可进行改造利用。据此,我所自1983年以来,开展了板栗高接效应试验研究工作。根据三年的试验观测初步证明:野生板栗高接效应试验取得良好效果,平均株嫁接成活率100％,枝嫁接成活率86.8％。嫁接后树冠第1年恢复到原树冠的35.5％,第2年 Zhashui County, Shaanxi Province, one of the major producing chestnut County, the red chestnut chestnut produced that large chestnuts for our long-standing North China breed species. Chestnut cultivation in Zhashui more than 2,000 years of history, in the long process of production, the small number of artificial grafting cultivation, the vast majority rely on natural renewal seed to take over, forming a strong wild chestnut resources, urgently need to transform and use . According to the survey of agricultural zoning, there are still more than 10,000 wild chestnut resources in the county, about 400,000, of which about 200,000 acres of 5000 acres can be transformed and utilized. Accordingly, I since 1983, launched a chestnut high connection effect test research work. According to three years of experimental observation preliminary proof: Wild chestnut high access effect test achieved good results, the average graft survival rate of 100%, grafting survival rate of 86.8%. The first year after grafting, the canopy returned to 35.5% of the original canopy, the second year