低产核桃树高接换优‘礼品2号’后的坚果表型及产量

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文章编号：2096-8108（2025）06-0018-04 中图分类号：S664.1 文献标识码：A

Phenotype and Yield of Nuts from Low-Yield Walnut Trees After Grafting with‘Lipin 2’

LI Xiayuan，GAO Peng，TIAN Xin，WU Yanxia， ZHAO Wei，WANG Yong （Pomology Institute，Shanxi Agricultural University，Taiyuan Shanxi O3oo3l，China）

Abstract：【Objective】Currently，walnut cultivationarea in China is extensive，buta large numberof seedling tres and low-yieldcultivars severelyconstrain industryprofitabilty.‘Lipin2’，afresh-eating walnutcultivar popular among consumers，commands higher market prices and beter sales thanordinary mixed nuts.Top-grafting forcultivarimprovement is akey technique in walnut cultivation，enabling theconversionoflow-yieldcultivars intomarket-preferredones，thereby increasing yieldand income.【Methods】To explore the nut phenotype and yield after top-grafting low-yield walnut trees with‘Gift 2’， this experiment used‘Lipin 2’as scions and 10- year-old seedling walnut trees as rootstocks for top-grafting. The yield and fruit quality of the grafted walnuts were measured and analyzed. 【Results】 After grafting with‘Lipin 2∙ in the first year，the walnuttres beganbearing fruitinthesecondyear，withyieldmultiplyingsignificantlyfrom years3to5.Theaverage single nutweight，longitudinal，transverse，andlateraldiameters，kerelweight，ndkerneloutpercentagealsoincreasedaually. Yielddecreased inthe sixth yearduetolow spring temperatures.【Conclusion】Top-graftingforcultivarimprovementis an important means toenhance the yield，quality，andeconomic benefitsoflow-yieldwalnut tres.Itisakeytechnologyforpromo tingqualityandeficiencyinthewalnut industry，holdingsignificantpracticalvaueforachievingruralrevitalizationandagricultural modernization.

Keywords：walnut；top-graftingforcultivarimprovement；yield；fruit quality

核桃是四大干果之王，在我国栽培历史悠久，在全国范围内均有种植。（剩余4000字）