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板栗具有强枝结果的习性,而一般树的强枝都在树冠外围,因此形成外围结果。幼树结果枝少,产量低;成年树随着分枝增加,枝条越来越细,失去结果能力,这是板栗树低产的一个重要原因。为了促进板栗外围长出强枝,北京地区以前多采用清膛修剪,结果更促使结果部位外移。为了达到立体结果、高产稳产的目的,三年来,我们在密云县高岭公社栗榛寨大队以13-16年生(嫁接后5-7年)的栗树为材料,在冬季采用促进板栗内膛结果的小更新修剪法并结合改接良种及其它管理措施,1982年该大队板栗产量达47,200斤(1979年仅7,024斤),获得了明显的增产效果。
Chestnut has the habit of strong branch results, while the strong branches of common trees are at the periphery of the canopy, thus forming a peripheral result. Saplings result in fewer shoots and lower yields; adult trees increase with branching, and shoots become finer and lose their ability to bear fruit. This is an important reason for the low yield of chestnut trees. In order to promote the growth of strong branches around the chestnut, Beijing area before the use of clear trimmers, the result prompted the results of part of the relocation. In order to achieve the three-dimensional results, high yield and stability of the purpose, three years, we are in Miyun County Gaoling Commune chestnut walled 13 to 16 years old (5-7 years after grafting) chestnut as material, in winter to promote the chestnut bore The results of the small update pruning method combined with improved access and other management measures, in 1982 the brigade chestnut production reached 47,200 kg (only 7,024 kg in 1979), access to a significant increase in production.