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核桃树是一种经济价值和营养价值很高的木本油料果树。核桃在市场上占重要地位。由于长期实生繁殖,栽植分散,栽培技术落后,造成晚实低产,群众发展核桃的积极性不高。为促进这一传统果树的发展,搞活山区经济,满足市场供应,我们自1983年开始在青石山旱地进行了核桃幼树密植丰产栽培技术试验,连续3年共栽植30亩,2500株。栽后第三年亩产核桃62.9斤、第四年118.4斤、第五年170～288斤。现将试验情况介绍如下,供参考。
Walnut tree is a woody fuel tree with high economic value and high nutritional value. Walnut in the market occupies an important position. Due to long-term real breeding, planting and dispersing, backward cultivation techniques, resulting in late real low yield, the enthusiasm of the masses to develop walnum is not high. In order to promote the development of this traditional fruit tree, invigorate the economy in mountainous areas and satisfy the market supply, we conducted a high-yielding cultivation experiment on walnut saplings since 1983 in arid land of Qingshi Mountain. In the third year after planting, walnut 62.9 kg per mu, the fourth year 118.4 kg, the fifth year 170 ~ 288 kg. The test situation is introduced below, for reference.