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樱桃美国的甜樱桃生产集中在太平洋沿岸各州及密执安州。酸樱桃生产集中于密执安州。西德和美国樱桃生产居世界首位,其次是土耳其、意大利、法国、南斯拉夫和西班牙。樱桃的主要砧木是马扎樱桃(Mazzard)和马哈利樱桃(Mahaleb)。在欧洲,马扎樱桃用作砧木已有2000多年历史,但在美国是十八世纪才使用。尽管马扎樱桃萌芽不规律,并且只能在短时期内进行芽接,但在美国东部,尤其是粘重壤土上,对甜樱桃普遍都选它作砧木。粘重土壤或有Phy-
Cherry America’s sweet cherry production is concentrated in the states of the Pacific Rim and Michigan. Sour cherry production is concentrated in the state of Michigan. Cherry production in West Germany and the United States ranked first in the world, followed by Turkey, Italy, France, Yugoslavia and Spain. The main cherry rootstocks are Mazzard and Mahaleb. In Europe, Mazar cherry has been used as a rootstock for more than 2000 years, but was only used in the United States in the 18th century. Although Mazar cherry germinates irregularly and can only be sprouted in a short period of time, it is commonly found on sweet cherries in the eastern United States, especially heavy loamy soils. Sticky soil or have Phy-