论文部分内容阅读
板栗是我国重要的木本粮食树种。近年来板栗生产发展很快,据统计,山东省1987年板栗栽培面积3.46万hm2,1997年底发展到19.18万hm2,是10年前的5倍多。特别是近几年,从国外引进新品种的数量大量增加,如烟台蓬莱及牟平、日照东港区、青岛胶南市分别从韩国引进板栗接穗49万...
Chestnut is an important woody food tree species in our country. In recent years, rapid development of chestnut production, according to statistics, chestnut cultivation area of Shandong Province in 1987 34,600 hm2, by the end of 1997 to reach 191,800 hm2, more than 5 times 10 years ago. Especially in recent years, the number of new varieties imported from abroad has increased greatly. For example, Penglai and Muping in Yantai, Donggang District in Rizhao, and Jiaonan in Qingdao have introduced 495,000 chestnuts from Korea respectively.