【摘要】 以银白杨×新疆杨的8个杂种无性系为材料,研究其在新疆北屯、玛纳斯和伊犁试验区的生长特性差异及其与环境因子的关系。结果表明:银白杨×新疆杨8个杂种无性系的高生长、径生长在北屯、玛纳斯和伊犁3个试验区均存在差异。8个无性系材积增长量的顺序为北屯试验区>玛纳斯试验区>伊犁试验区,在所有试验无性系中,北屯试验区的108号无性系的材积增长量最大,为0.774 4m3,材积增长量最小的为玛纳斯试验区的184号无性系,仅有0.101 3m3;不同试验区的温、湿条件是影响银白杨×新疆杨杂种无性系材积增长的主要气候因素;影响无性系生长的土壤主分量因子在北屯试验区为土壤有机质、土壤全氮、土壤全磷、土壤速效氮、含盐量和含水率;在玛纳斯试验区为土壤有机质、土壤全氮、土壤全钾、土壤速效氮和土壤速效钾,在伊犁试验区为土壤有机质、土壤全氮和土壤速效氮;综合材积与气候、土壤因子,8个无性系中,以108和527无性系的生长为最佳。更多还原

【Abstract】 Eight hybrid clones of Populus alba and P.albacv.Pyramdalis were studied in Beitun,Manas and Ili experimental zones with block design.The annual diameter at breast height(DBH)and tree height were monitored.Differences in growth characteristics and their relationships with environmental factors were analyzed.The results showed that high growth,diameter growth of eight hybrid clones in three areas varied differently.The ascending sequential order of volume increment was Beitun,Manas and Ili,and the volume increment of No.108 clone in Beitun test area was the largest with 0.774 4m3,while the No.184 clone in Manas test area was the minimal(0.101 3m3).The temperature and humidity were the main factor limiting volume increment.The principal component factors of soil in Beitun were organic matter,total nitrogen,total phosphorus,available nitrogen,salinity and moisture,which in Manas were organic matter,total nitrogen,total potassium,available nitrogen and potassium,and those in Ili test were organic matter,nitrogen and available nitrogen.Considering the volume increment,weather and soil factors,the growth of No.108 and No.527 clones were the best.更多还原