微量元素单施和组合配施对桉树幼林生长的影响  

Effects of Single and Combined Application of Trace Elements on Growth of Young Eucalyptus Plantations

作　　者：周鑫 罗发源 廖兴文 ZHOU Xin;LUO Fayuan;LIAO Xingwen(Guangxi State-Owned Qinlian Forest Farm,Qinzhou,Guangxi 535009,China;Baise Forestry Industry Management Station,Baise,Guangxi 533000,China)

机构地区：[1]广西国有钦廉林场,广西钦州535009 [2]百色市林业产业管理站,广西百色533000

出　　处：《农业研究与应用》2023年第3期57-62,共6页Agricultural Research and Application

摘　　要：为探究微量元素B、Zn、Cu、Fe、Mn、Mo对桉树幼林生长量的影响,为生产中科学施用微量元素提供理论参考依据,以桉树新造林为研究对象,设置微量元素单施和组合配施不同处理,在施用复合肥基础上加施不同的微量元素,分析微量元素对各生长指标的影响。结果表明:与对照相比,单施B、Zn、Cu、Fe、Mn、Mo均能显著提高林分树高、胸径和单株材积生长量,其中施用B的处理增幅最大,树高、胸径和单株材积增幅分别为19.8%、20.4%和61.2%。微量元素组合配施能显著提高林分生长量,其增幅较单施微量元素大,B和Zn组合配施可使桉树幼林树高、胸径和单株材积生长量增幅分别达26.6%、25.3%和81.4%,在B和Zn组合基础上继续添加其他元素,其进一步增长的幅度有限,均未达显著差异水平。B和Zn不仅能有效地提高林分生长量,而且可提高或维持林分的生长发育整齐度;Fe虽然对林分生长量的提升作用不如其他元素,但在提高或维持林分的生长发育整齐度有显著的作用。To explore effects of trace elements,B,Zn,Cu,Fe,Mn and Mo,on growth of young Eucalyptus plantations and provide theoretical reference for application of trace elements in production,newly planted Eucalyptus plantations were taken as the research objects,and different treatments of single and combined application of trace elements were set.Different trace elements were applied in addition to compound fertilizer,and the effects of trace elements on each growth index of young Eucalyptus Plantations were analyzed.The results showed that:compared with the control,single application of B,Zn,Cu,Fe,Mn and Mo could significantly increase the growth of tree height,diameter at breast height(DBH)and individual volume.Among them,effects of B application were the most noticeable,and increase of tree height,DBH and individual volume were 19.8%,20.4%and 61.2%respectively.The combined application of trace elements can significantly increase stand growth,and the increase is larger than the single application of trace elements.The combined application of B and Zn can increase the growth of height,DBH and individual volume of young Eucalyptus plantations by 26.6%,25.3%and 81.4%respectively.Based on the combined application of B and Zn,the further growth brought by other trace elements is limited but not significantly different.The application of B and Zn can not only effectively improve the stand growth,but also improve or maintain the uniformity of stand growth and development.Although the promotion effect of Fe on stand growth is not as noticeable as other elements,it has a significant effect on improving or maintaining the uniformity of stand growth and development.

关 键 词：桉树 施肥 微量元素 单施 组合配施 

分 类 号：S792.39[农业科学—林木遗传育种]