西南林业大学学报2024，Vol.44Issue(7)：17-26,10.DOI:10.11929/j.swfu.202308016
肥料对青冈苗木的促长作用及其营养机理研究
Growth Stimulating of Fertilizer on Quercus glauca Seedlings and Its Nutritional Mechanism
摘要
Abstract
Four nitrogen concentration gradients(0.1,0.2,0.3,0.4 g/plant)for each fertilizer and 1 control treatment were set respectively.At the end of the growing season,the biomass,nutrient element mass fraction and matrix enzyme activity were measured,the nutrient element accumulation and allocation ratio were calculated,and the effects of different nitrogen application rates of slow-release fertilizer and compound fertilizer on biomass,mass fraction and accumulation of nutrient elements and matrix enzyme activity of Q.glauca container seedlings were analyzed.The findings revealed that the application of slow-release fertilizer and compound fertilizer was conducive to the improvement of nutritional element accumulation and matrix enzyme activity of Q.glauca con-tainer seedlings,and the treatment of slow-release fertilizer was almost always better than compound fertilizer un-der the condition of the same total nitrogen application amount,and the improvement effect of each nutrient index and matrix enzyme activity was the best under H3 treatment.Under H3 treatment,the accumulation of total bio-mass of Q.glauca container seedlings increased by 86.24％compared with CK,the accumulation of nitrogen,phosphorus and potassium elements in the whole plant was 2.85,2.09 and 2.47 times that of CK,and the activit-ies of urease,catalase and sucrase in matrix enzymes increased by 18,2.84,and 2.81 times,respectively.In nu-trient element distribution,fertilization was more conducive to increasing the aboveground allocation ratio of bio-mass and nutrient element accumulation of Q.glauca container seedlings.In the correlation analysis,biomass,ele-ment accumulation and matrix enzyme activity were positively correlated with each other.In terms of nutritional element accumulation and matrix enzyme activity of Q.glauca container seedlings,the effect of slow-release fer-tilizer application was generally better than compound fertilizer,and in most cases,the nutritional status and mat-rix enzyme activity of H3-treated Q.glauca container seedlings were the best,and it was recommended to apply 2.14 g/plant slow-release fertilizer when cultivating high-quality container seedlings of Q.glauca,and the nitro-gen consumption was 0.3 g/plant.关键词
青冈/容器苗/缓释肥/复合肥/营养元素/基质酶Key words
Quercus glauca/container seedling/slow-release fertilizer/compound fertilizer/nutritional ele-ment/matrix enzyme分类
农业科技引用本文复制引用
鞠昕萌,黄逢龙,喻方圆..肥料对青冈苗木的促长作用及其营养机理研究[J].西南林业大学学报,2024,44(7):17-26,10.基金项目
江西省林业局林业科技创新专项项目[创新专项(2021)16号]资助 （2021）
江苏高校优势学科建设工程项目(PAPD)资助. （PAPD）
