江西农业学报2025，Vol.37Issue(12)：1-13,13.DOI:10.19386/j.cnki.jxnyxb.2025.12.001
不同改良剂配施对三角梅生长、园林土壤理化性质及微生物的影响
Effects of Combined Application of Different Amendments on Growth of Bougainvillea,Soil Physicochemical Properties and Microorganisms
摘要
Abstract
To explore the effects of biochar and functional microbial agents(Bacillus megaterium)on the fertility of urban garden soil and the growth of Bougainvillea,this study took Bougainvillea,a typical urban road green plant in Guangzhou,as the research object and conducted a pot experiment.Five treatments were set up:T1(adding 0.0235 g/kg fish protein fertilizer),T2(adding 1%camphor tree biochar),T3(adding 0.5 g/kg functional microbial agent),T4(adding 1%camphor tree biochar+0.5 g/kg functional microbial agent,and T5(adding 1%camphor tree biochar+0.5 g/kg functional microbial agent)+0.0235 g/kg fish protein fertilizer),with no treatment as the blank control(CK).The results showed that in terms of Bougainvillea growth,all treatments could advance the flowering period of Bougainvillea,significantly increase the number of flowers,increase the height and ground diameter of Bougainvillea by 48.40%and 23.24%respectively compared to the control group at the 90th day of cultivation,significantly increase the total nitrogen and total phosphorus content in the Bougainvillea root system,and improve the root morphology.In terms of the physical and chemical properties of soil,compared with CK,all treatments could effectively improve soil quality.Among them,the T4 treatment significantly increased the soil pH value,electrical conductivity,organic matter,dissolved organic carbon,total phosphorus,total potassium,alkali-hydrolyzable nitrogen and available potassium content by 24.9%,316.0%,663.7%,371.2%,123.2%,67.6%,89.8%and 246.2%respectively,with the most significant improvement effect.The T5 treatment significantly increased the soil urease and neutral phosphatase activity by 355.6%and 93.5%respectively,while the T4 treatment significantly increased the soil amylase and neutral protease activity by 92.4%and 94.0%respectively.High-throughput sequencing results showed that the Chao1 and Shannon index increased,indicating that fish protein fertilizer,biochar and functional microbial agents all made the soil bacterial community structure more diverse and balanced,with the T4 treatment group having the largest proportion of OTUs.In conclusion,the combined application of biochar and functional microbial agents has the best effect on the improvement of garden soil,and the addition of fish protein fertilizer(0.0235 g/kg)on this basis can promote the growth of Bougainvillea and significantly increase the number of flowers.关键词
园林土壤/鱼蛋白肥/生物炭/微生物菌剂/三角梅/植物生长Key words
Garden soil/Fish protein fertilizer/Biochar/Microbial agent/Bougainvillea/Plant growth分类
农业科技引用本文复制引用
LIANG Yong-xin,HUANG Ying-mei,LIANG Chun-mei,WU Jia-long,XU Chang-chao,ZHANG Jun-tao,LIU Ke-xing..不同改良剂配施对三角梅生长、园林土壤理化性质及微生物的影响[J].江西农业学报,2025,37(12):1-13,13.基金项目
广州市林业和园林局部门预算项目(穗财编[2025]2号) （穗财编[2025]2号）
广州市科技计划项目"广州市生态园林科技协同创新中心"(202206010058) （202206010058）
广州市科技局社会发展项目"珍贵树种良种选育与应用示范共同攻关研究服务项目"(202206010058). （202206010058）
