核桃晚霜冻害后更新复壮技术研究  

Study on Regeneration and Rejuvenation Technology of Walnut after Late Frost Damage

作　　者：武静 Wu Jing(Shanxi Academy of Forestry and Grassland Sciences,Taiyuan 030012,China)

机构地区：[1]山西省林业和草原科学研究院,山西太原030012

出　　处：《山西林业科技》2023年第4期30-32,共3页Shanxi Forestry Science and Technology

基　　金：山西省科技合作交流专项项目(202104041101037)。

摘　　要：以中林1号、辽宁1号和孝核1号核桃品种为试验材料,设3个处理,研究其对核桃晚霜冻害后的更新复壮作用。结果表明,采取回缩处理的核桃树每枝萌发长枝平均数、1年生枝平均粗、平均冠幅、当年挂果量和第2年挂果量均高于其他2个处理。回缩处理核桃树树高小于其他2个处理,但冠幅大于其他2个处理,空膛现象得到改善。此外,处理1、处理2及时剪去了霜冻后核桃树的病枝、枯枝,可有效减少病害发生率。因此,核桃树受冻后回缩枝条,及时剪除病枝、枯枝,对其新梢生长、树冠恢复、空膛改善、提高挂果量以及降低病害发生率均有显著作用。3 treatments were set up to study the effects of different treatments on the regeneration and rejuvenation of walnuts after late frost damage using Zhonglin 1,Liaoning 1 and Xiaohe 1 walnut varieties as experimental materials.The results showed that the average number of sprouted long branches,average diameter of 1-year-old branches,average crown width,annual fruit yield and second year fruit yield of walnut trees with shrinkage treatment were higher than other 2 treatments.The height of the walnut tree with shrinkage treatment was smaller than that of other 2 treatments,but the crown width was larger than other 2 treatments which phenomenon of hollowing was improved.In addition,treatment 1 and treatment 2 cut off the diseased and dead branches of the walnut after frost promptly,which could reduce the incidence of diseases effectively.Therefore,walnut trees with shrinkage treatment could cut diseased and dead branches after late frost damage,which had a significant effect on the growth of new shoots,restoration of tree crowns,improvement of hollowing phenomenon,increase of fruit yield and reduction of disease incidence.

关 键 词：核桃 晚霜冻害 更新复壮 回缩枝条 

分 类 号：S664.1[农业科学—果树学]