小叶杨不同优树无性系生长特性研究  

Study on Growth Characteristics of Different Superior Clones of Populus simonii

作　　者：陈保业 魏国良[2] 谢德娟 李强峰[2] CHEN Bao-ye;WEI Guo-liang;XIE De-juan(Forestry Station of Qilian County,Qinghai Province,Qilian,Qinghai 810400;Department of Agriculture and Forestry,College of Agriculture and Animal Husbandry,Qinghai University,Xining,Qinghai 810016)

机构地区：[1]青海省祁连县林业站,青海祁连810400 [2]青海大学农牧学院农林系,青海西宁810016

出　　处：《安徽农业科学》2020年第23期154-157,共4页Journal of Anhui Agricultural Sciences

基　　金：青海省科学技术厅项目“祁连山地区小叶杨优良种质选育及区域化造林研究”(2020-QY-209);2020年青海省财政支农林草改革发展资金新林业技术推广项目“祁连县小叶杨种质资源调查及优良无性系选育技术示范推广”(青财农字〔2020〕364号)。

摘　　要：以从祁连县小叶杨主要分布区选取的50个优树无性系为材料,对其生长特性进行测定分析,以期筛选出速生、丰产、观赏价值高、适应性强的小叶杨优良无性系。结果表明:无性系T43、T42、G49、D31、T38、T35成活率均达80%以上;无性系T43、T42、S15、S3、S26的苗高均高于85 cm;地径排序依次是T39、T43、T38、S21、S13、T42,显著大于其他无性系;叶面积排序依次是T42、T43、T36、T35、T39,明显大于其他无性系;T43、T42、T39、T35、T40、S26的叶量大,观赏性高。综合各指标可知:T43与T42无性系的成活率高,速生繁殖能力强,观赏价值高,对当地的气候和试验地的土壤条件有较强的适应性。With the aim of fast growing,fertility,ornamental value and adaptability of superior Populus simonii clones,fifty samples in the main distribution area of Qilian County were selected by determination and analysis of growth characteristics.It turned out that survival rates of T43,T42,G49,D31,T38,T35 were all above 80%;seedling heights of T43,T42,S15,S3,S26 exceeded 85 cm;ground diameters of T39,T43,T38,S21,S13,T42 were obviously higher than the others;the order of leaf areas was T42,T43,T36,T35,T39,evidently larger than the other clones;amount of leaves and ornamental value of T43,T42,T39,T35,T40,S26 surpassed the rest of the clones.The comprehensive indicators showed that T43 and T42 had higher survival rates,fast growing rates,great ornamental values,which had strong adaptability to the local climate and soil conditions of the test site.

关 键 词：小叶杨 无性系 生长特性 适应性 

分 类 号：S792.116[农业科学—林木遗传育种]