云南美国山核桃引种栽培试验

Experiment of introduction and cultivation of Carya illinoensis

通过对美国山核桃金华、绍兴、山站2号、长林13号4个品种近20年的引种试验,认为美国山核桃适宜云南中亚热带地区生长,可作为新经济林树种发展应用。经过对引入品种长期系统的物候观察,树体生长量、丰产性的测定以及室内考种、坚果含油率分析等,认为绍兴、金华2个美国山核桃品种结实率高,丰产性能好,25年生单株产量分别达到44.4 kg和39.2 kg,且品质佳,可在生产上推广应用。为云南发展美国山核桃提供了科学依据。

Four varieties of Carya illinoensis, named Jinhua, Shaoxing, Shanzhan No.2 and Changlin No.13 were introduced and cultivated in Yunnan for twenty years. Carya illinoensis showed the promising adaptability to the middle subtropical condition of the experimental sites, and could be developed as a new economic tree species of Yunnan province. Through observing and analyzing phenophase, growth increment, yield and oil content of nut, Shaoxing and Jinhua were proved to be high fruit setting, productive and favorable quality varieties, and the individual yield of 25 years old trees obtained 44.4 kg and 39.2 kg respectively. It was recommended to extend these two varieties in forestry practice.