前言核桃是我国一种重要木本油料作物,不仅油质好,合油量高,而且木材坚韧,富有弹性,不会反翘开裂,是国防工业的重要木材。核桃树的适应性较强,既可在山区生长,也可在平原栽植,既适宜于成片造林,也适宜于零星植树,是我国当前重点推广种植的树种之一。但是,由 Introduction Walnut is an important woody oil crop in our country. It not only has good oil quality and high oil content, but also is tough, flexible and does not warp and crack. It is also an important timber for the defense industry. Walnut tree adaptability, both in mountainous areas can also be planted in the plains, both suitable for the film into afforestation, is also suitable for sporadic tree planting is China’s current promotion of planting one of the species. However, by