一、育种目的以早实、丰产、优质、抗病为目标,进行多特性核桃优良品种的培育。二、杂交组合选配通过对育种原始材料的研究,确定河北薄皮和丰产纸皮拟为杂交组合。因为它们在生态类型、生物学特性、经济性状等方面具有很强的异质性,容易获得杂种优势。 First, the purpose of breeding To early fruit, high yield, high quality, disease-resistant as the goal, to carry out multi-character varieties of walnut cultivation. Second, the hybrid combination of optional Through the study of breeding raw materials to determine Hebei thin skin and high yield of paper to be hybrids. Because of their ecological types, biological characteristics, economic traits, etc. have a strong heterogeneity, easy access to heterosis.