种植密度对大叶意杨苗木生长和质量的影响  

Effect of Planting Density on Growth and Quality of Populus tomentosa Seedlings

作　　者：代君雅 Dai Junya(Luanchuan Township People's Government,Luoyang,Henan 471500,China)

机构地区：[1]河南省洛阳市栾川乡人民政府,河南洛阳471500

出　　处：《绿色科技》2022年第15期155-157,161,共4页Journal of Green Science and Technology

摘　　要：为研究种植密度对大叶意杨苗木生长和质量的影响,设置4种不同的密度,研究了意杨的生长特性、叶面积指数、光能截获率和养分含量。结果表明:密度为38000株/hm~2时,意杨的地径较粗,叶片生长量较大,茎和根系的单株生物量最多,叶片氮磷钾含量最高,茎磷含量最高,根系氮磷含量最高,因此在种植密度为38000株/hm~2时,植株生长较好,养分含量较高,是意杨较为适宜的种植密度。In order to study the effect of planting density on the growth and quality of Populus tomentosa seedlings,four different densities were set up to study the growth characteristics,leaf area index,light energy interception rate and nutrient content of Populus tomentosa.The results showed that when the density was 38000 plants/hm~2,the ground diameter of Populus tomentosa was thicker;the leaf growth was larger;the single plant biomass of stem and root was the largest;the nitrogen,phosphorus and potassium content of leaf was the highest;the phosphorus content of stem was the highest,and the nitrogen and phosphorus content of root was the highest.Therefore,when the planting density is 3800 plants/hm~2,the plant growth is better and the nutrient content is higher,which is a more suitable planting density for Populus tomentosa.

关 键 词：意杨 密度 苗木 生长 质量 

分 类 号：S688[农业科学—观赏园艺]