我国核桃栽培历史悠久,形成了许多品种和类型。目前栽培的优良品种有:鸡爪绵核桃、章丘薄壳核桃,早熟丰产核桃、纸皮核桃、陕西隔年核桃等。核桃对环境的适应性比较强,不论是丘陵、山地、平地,只要土层深厚,排水良好的地方都能生长。 为使核桃树生长旺盛多产核桃,要加强肥水科学管理和防虫治病,还要认真进行整形修剪。核桃早实品种一般2—3年开始结果,6～8年便进入盛果期。一般可延续40～ China’s walnut cultivation has a long history, forming many varieties and types. At present cultivation of fine varieties are: chicken claw walnut, Zhangqiu shell walnut, precocious walnut, walnut, walnut and other next year in Shaanxi. Walnut adaptability to the environment is relatively strong, whether it is hills, mountains, plains, as long as the soil deep, well-drained place can grow. In order to make the walnut tree grow strong and prolific walnut, it is necessary to strengthen scientific management of fertilizer and water and anti-parasitic disease, but also earnestly carry out plastic pruning. Early varieties of walnuts generally 2-3 years to start the result, 6 to 8 years will enter the full fruit period. Generally can be extended 40 ~