黑木相思优良无性系梅州区域的早期生长表现  

Early Growth Performance of Excellent Acacia melanoxylon Clones in Meizhou Regional Trial

作　　者：丁文恩 向司宇 范秀琼 杨生丽 唐国涛 肖腊兴 李志良 魏锦秋 DING Wenen;XIANG Siyu;FAN Xiuqiong;YANG Shengli;TANG Guotao;XIAO Laxing;LI Zhiliang;WEI Jinqiu(Forestry Research Institute,Meizhou Academy of Agriculture and Forestry Sciences/Guangdong Engineering Technology Research Center(Meizhou)for the Development and Use of the Forest Characteristic Resources,Meizhou,Guangdong 514011,China)

机构地区：[1]梅州市农林科学院林业研究所/广东省林下特色资源(梅州)开发应用工程技术研究中心,广东梅州514011

出　　处：《林业与环境科学》2024年第3期95-99,共5页Forestry and Environmental Science

基　　金：广东省林业科技计划项目(2021-KYXM-08)。

摘　　要：为筛选出适合梅州地区推广种植的黑木相思Acacia melanoxylon优良无性系,研究以SR3、SR14、SR17、SR20、SR21、SR53、SF1、MZ1共8个黑木相思无性系为研究对象,测量其造林后2 a内的胸径、树高和冠幅,同时以SR3为对象,研究造林抚育过程中分别施用大颗粒复合肥和复混肥后的生长表现。结果表明:所有黑木相思无性系造林1.6 a后胸径、树高和冠幅都极显著提高(P<0.01),不同黑木相思无性系之间胸径、树高和冠幅存在极显著差异(P<0.01),其中SR17的年生长速度最快,SR17和SR14的早期生长表现明显好于其他无性系,黑木相思幼林抚育过程中施大颗粒复合肥后的生长表现好于复混肥。综合早期生长表现,SR17、SR14生长速度快,适应性强,适合在粤东地区推广种植;营林过程中施大颗粒复合肥更有效率。In order to identify superior clones of Acacia melanoxylon suitable for cultivation in the Meizhou region,this study focused on 9 clones of A.melanoxylon,including SR3,SR14,SR17,SR20,SR21,SR53,SF1 and MZ1.The study measured their diameter at breast height(DBH),tree height,and crown width within two years after afforestation.Additionally,the study examined the growth performance during afforestation and tending processes by separately applying large granule compound fertilizer and complex mixed fertilizer to the SR3 clone.The results indicated that the DBH,tree height,and crown width of all A.melanoxylon clones showed significant improvement(P<0.01)after 1.6a of afforestation,and there were significant differences in DBH,tree height,and crown width among different clones of A.melanoxylon(P<0.01),with SR17 exhibiting the fastest annual growth rate.The early growth performance of SR17 and SR14 was notably better than that of other clones.The growth performance of A.melanoxylon young forests was better after the application of large granule compound fertilizer than after the application of complex mixed fertilizer.Based on early growth performance,SR17 and SR14 exhibit fast growth rates and strong adaptability,making them suitable for widespread cultivation in the eastern region of Guangdong.The application of large granule compound fertilizer during afforestation processes proves to be more efficient.

关 键 词：黑木相思 无性系 梅州 

分 类 号：S722.5[农业科学—林木遗传育种]