论文部分内容阅读
银杏(Ginkgo biloba L.)又名白果,是优良的种材兼用和园林绿化树种,分布于我国二十余个省(市、区)。种子医食具佳,是国际市场上的紧俏商品;木材是高级建筑、像具、雕刻的优良用材。现就银杏良种单株选择技术介绍如下。一、良种单株选择的意义据目前的初步调查统计,我国银杏栽培品种约有150余个,在这十分丰富的品种资源中,有许多是地方良种,如江苏省吴县的洞庭皇、泰兴县的佛指,广西壮族自治区灵川县的黄皮果、大梅核,湖北省孝感市的糯米白果,山东省郯城县的5号、9号等等。然而这些地方良种,目前仍栽培在原产地的狭小范围内,没有按照一定的标准和方法进行认真的选择,更未能在我国银杏分布区推广栽培。我国银杏良种单株选择仅在局部地区刚刚起步。要想在银杏生产中达到种子优
Ginkgo biloba L. (Ginkgo biloba L.), also known as ginkgo, is an excellent species of both trees and trees, distributed in more than 20 provinces (cities, districts) in China. Good seed medicine, is the tight market in the international market; timber is a high-grade buildings, such as furniture, carved fine timber. Now ginkgo seed selection techniques are as follows. First, the significance of plant species selection According to the preliminary survey statistics, China’s ginkgo cultivars about 150, in this very rich variety of resources, there are many local varieties, such as the Dongting Emperor Wu County, Jiangsu Province, Taixing County Buddha, Guangxi Zhuang Autonomous Region Lingchuan yellow fruit, big plum nuclear, Xiaogan City, Hubei Province, glutinous rice ginkgo, Tancheng County, Shandong Province No. 5, No. 9 and so on. However, the seedy cultivars in these areas are still cultivated in a narrow area of origin. They have not been carefully selected according to certain criteria and methods, and have failed to promote cultivation in China’s Ginkgo biloba area. China’s ginkgo seed selection only in some areas just started. To achieve ginkgo seed production superiority