核桃( Juglans re g ia)是经济价值和营养价值很高的木本油料果树,是我国食油生产的第二条战线,它在世界干果栽培中居于首位。土耳其、美国、意大利等国核桃栽培面积和栽培水平,十几年来有迅速发展,其主要原因是实现了核桃栽培品种化、集约化。据报道,美、法核桃全国平均亩产一 Juglans re gia is a woody oilseed fruit tree with high economic value and high nutritional value. It is the second front of our country’s cooking oil production and ranks first in the world’s dried fruit cultivation. Turkey, the United States, Italy and other countries walnut cultivation area and cultivation level, rapid development over the past decade, the main reason is to achieve the walnut cultivation varieties, intensive. According to reports, the United States, France, the average national production of walnut one