不同栽植密度对互叶白千层生长状况的影响  

Effects of Different Planting Densities on the Growth of Melaleuca alternifolia

作　　者：邓力 李艳枝 陈小红 韦初明 余玉珠 杨秀敛 DENG Li;LI Yanzhi;CHEN Xiaohong;WEI Chuming;YU Yuzhu;YANG Xiulian(Guangxi State-owned Qinlian Forest Farm,Qinzhou,Guangxi 535000,China)

机构地区：[1]广西壮族自治区国有钦廉林场,广西钦州535000

出　　处：《热带农业科学》2023年第10期12-16,共5页Chinese Journal of Tropical Agriculture

基　　金：广西自然科学基金项目(No.2021GXNSFAA196069);2021年中央财政林业科技推广项目。

摘　　要：采用单因素完全随机区组试验,研究4种栽植密度对互叶白千层生长高度、胸径、高径比、冠幅及生物量的影响,选择出最佳栽植密度,为互叶白千层栽植提供技术参考。结果表明:不同栽植密度对互叶白千层高度、胸径、高径比、生物量影响差异极显著,对冠幅影响差异显著。互叶白千层生长高度、胸径、单株生物量及林分生物量均以株行距1.0 m×0.80 m表现最好,以株行距1.0 m×0.50 m表现最差;互叶白千层生长冠幅以株行距1.0 m×1.00 m表现最好,但与其他处理之间相差不大。通过单株产量估算4个栽植密度的亩产生物量可知,株行距1.0 m×0.80 m生物量最高,株行距1.0 m×0.50 m生物量最低。综合分析,株行距1.0 m×0.80 m的单株生物量和林分生物量最大,可作为广西沿海北部湾区域互叶白千层最佳种植密度。A single-factor completely randomized block experiment was conducted to study the effects of four planting den-sities on the growth height,DBH,height-diameter ratio,crown width,and biomass of Melaleuca alternifolia.The results showed that different planting densities had impact significant differences in the height,DBH,the ratio of height to diameter,the biomass of M.Alternifolia,and significant differences in crown width.The growth height,DBH,and biomass per plant of M.alternifolia were the best with a plant row spacing of 1.0 m×0.8 m and the worst with a plant row spacing of 1.0 m×0.50 m.The canopy width of M.alternifolia was the best with a plant row spacing of 1.0 m×1.00 m,but there was little difference between the four treatments.According to the yield per plant,the biomass per mu of the four densities was estimated,and the biomass of plant row of 1.0 m×0.80 m was the highest,and that of plant row spacing of 1.0 m×0.50 m was the lowest.In the comprehensive analysis,the plant spacing of 1.0 m×0.80 m has the highest single plant biomass and stand biomass,which can be regarded as the optimal planting density of Melaleuca alternifolia in the Beibu Gulf region of the Guangxi coast.

关 键 词：互叶白千层 栽植密度 高度 胸径 冠幅 生物量 

分 类 号：S792.99[农业科学—林木遗传育种]