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1 966年以后 ,在我省重点核桃产区开展优良种质资源选择工作。按坚果品质和丰产性状等选育指标 ,进行优树初选、复选和决选。经多性状综合评定 ,筛选出 1 2株优良单株。所选择的优良单株平均树龄 2 7年 ,株产坚果 2 1 .6kg,树冠投影面积产仁量 0 .2 65kg/ m2 ,平均单果重 1 2 .4 5g,壳厚度 1 .0 7mm,出仁率 60 .2 5%。用这批优良单株作为无性繁殖材料 ,是改良我省核桃遗传品质、提高核桃生产效益的重要途径之一。
After 1966, we carried out the selection of excellent germplasm resources in the key walnut producing areas in our province. According to the nut quality and high yield traits and other breeding indicators, optimal tree primaries, check and decide. After the comprehensive evaluation of multi-traits, 12 excellent single plants were screened. The average age of selected excellent single-plant 27 years, plant nut 2 1 .6 kg, canopy projected area yield kernels 0.252 65kg / m2, the average weight of 1 2 .4 5g, shell thickness 1. 0 7mm, out Kernel rate 60 .25%. It is one of the important ways to improve the genetic quality of walnut in our province and improve the production efficiency of walnut by using these excellent single plants as asexual propagating material.