美国东部黑核桃不同家系幼树年生长节律研究  

Study on Annual Growth Rhythm of the Saplings from Different Families of Eastern American Black Walnut

作　　者：宋锋惠 史彦江 卡得尔 

机构地区：[1]新疆林业科学研究院,新疆乌鲁木齐830002

出　　处：《经济林研究》2006年第1期56-59,共4页Non-wood Forest Research

基　　金：新疆科技厅科技攻关项目--<美国黑核桃良种快繁及栽培技术研究>(990101005)的部分内容

摘　　要：通过对引进的3个家系美国东部黑核桃4-5年生幼树的年生长节律及物候分析比较,结果表明:(1)黑核桃春季萌动、抽梢生长较晚,生长期仅为80 d左右,高、径生长集中在5-7月;(2)为使新梢充分木质化,预防2次生长带来的早、晚霜危害,树木停止高生长后,及时有效控水;(3)同一种源不同家系间,高、径生长存在差异,引进种子苗木时,应考虑引进经过区域试验种源的优良家系。Annual growth rhythm and phenology of the saplings of 4-5 years old from ,3 families of eastern American black walnut introduced were analyzed and compared with each other. The results showed that black walnut germinated and sprouted more lately in spring, the growth period only last about 80 days, and the height and diameter were increased mainly from May to July. In order to promote full lignification of new shoots and prevent the damage of early and night frosts to new shoots during the second growth, irrigation should be controlled effectively in time after the growth of height stop. Growth of height and diameter were different between different families from the same provenance, so excellent families which had gone through regional test should he considered as seedlings introduced.

关 键 词：美国 东部黑核桃 家系 幼树 生长节律 

分 类 号：S664.1[农业科学—果树学]