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我县受省、地科委委托,1976年开始在费县上冶区周家庄村进行板栗幼树密植高产栽培技术研究。至1984年,经过9年的时间,完成了从幼树早期丰产,到间移变化密度保持稳产高产,到利用间移树重建新园等配套技术的研究。经过逐年产量验收,三次突破了亩产千斤,取得了较大的经济效益,并已在生产中推广应用。试验园面积为2.049亩,河滩小平地,沙质壤土,土深1米,PH值为5.92,可以灌溉。1976年4月上旬,以5～7年生幼树作砧木定植,当年进行良种嫁接。试验分为两个密度:一片0.964亩,株行距为1.5×2米,
Commissioned by the county by the province, the Science and Technology Commission, 1976 started in Zhouxiazhang Village, Shangye District, Fei County chestnut young tree planting high-yielding cultivation techniques. By 1984, after nine years, it completed the research on supporting technologies from early sapling in early sapling to inter-shifting change density to maintain stable and high yield, and using new shrubs to reestablish new gardens. After a year of production acceptance, breakthrough three times per mu yield, achieved greater economic benefits, and has been in the production of the promotion and application. Test area of 2,049 acres of the park, a small beach, sandy loam, 1 meter deep soil, PH value of 5.92, can be irrigated. In early April 1976, 5-7 year-old young trees were planted as rootstocks and grafted on that year. Test is divided into two density: a piece of 0.964 acres, spacing of 1.5 × 2 meters,