摘要
为提升磷矿粉施用后土壤磷的有效性,探明解磷菌[巨大芽孢杆菌(BM)、丛枝菌根真菌(AMF)]对土壤磷组分和植物生长的影响,通过设置有机肥(CK1)、磷矿粉(CK2)、有机肥+磷矿粉(T1)、有机肥+磷矿粉+AMF菌剂(T2)、有机肥+磷矿粉+BM(T3)、有机肥+磷矿粉+AMF菌剂+BM(T4)6种盆栽培养试验处理,研究磷矿粉与解磷菌联合施用对土壤磷组分、理化性质及园林植物白兰、蒂牡花生长的影响。结果表明:与有机肥+磷矿粉处理(T1)相比,有机肥+磷矿粉+BM处理(T3)使白兰根干重显著提高了86.9%(P<0.05);有机肥+磷矿粉+AMF菌剂+BM(T4)处理使白兰叶干重显著提高了102.9%(P<0.05),BM和AMF菌剂添加(T4)显著降低了土壤pH值及有机质、速效钾含量(P<0.05)。施用磷矿粉的土壤磷组分以稀盐酸提取态磷(D.HCl-P)为主,占比56.8%以上。与施用有机肥+磷矿粉处理(T1)相比,BM和AMF菌剂添加(T4)能显著提升土壤碳酸氢钠提取态无机磷(NaHCO 3-Pi)和有机磷(NaHCO 3-Po)、氢氧化钠提取态无机磷(NaOH-Pi)和有机磷(NaOH-Po)含量。有机肥、磷矿粉与解磷菌联合施用有利于提升土壤NaHCO 3和NaOH提取态含量,促进白兰根和叶的生物量积累。
To enhance the availability of soil phosphorus after the application of ground phosphate rock,this study explored the impacts of phosphorus-solubilizing microbial agents on soil phosphorus components.Pot experiments were conducted to investigate the effects of combined application of ground phosphate rock with phosphorus-solubilizing bacterium(Bacillus megaterium,BM)and arbuscular mycorrhizal fungi(AMF)on soil phosphorus components,soil physical and chemical properties,and the growth of landscape plants Michelia×alba and Melastoma candidum‘Tianjiao 2 hao’.Results showed that compared with the treatment of applying organic fertilizer+ground phosphate rock(T1),the combination of organic fertilizer+ground phosphate rock+BM(T3)increased the root dry weight of Michelia×alba by 86.9%(P<0.05),and the combination of organic fertilizer+ground phosphate rock+BM+AMF(T4)increased the leaf dry weight of Michelia×alba by 102.9%(P<0.05).In addition,T4 reduced soil pH,organic matter,and available potassium content(P<0.05).The phosphorus in the soil treated with ground phosphate rock was primarily in the form of D.HCl-P,which accounted for more than 56.8%.Compared with T1,T4 significantly increased the content of NaHCO 3-Pi,NaHCO 3-Po,NaOH-Pi,NaOH-Po in the soil.After applying organic fertilizer and ground phosphate rock,the addition of BM and AMF is beneficial for improving the availability of soil phosphorus and promoting the accumulation of biomass in landscape plants.
作者
许昌超
吴家龙
陈厚良
张俊涛
XU Changchao;WU Jialong;CHEN Houliang;ZHANG Juntao(Guangzhou Institute of Forestry and Landscape Architecture,Guangzhou,Guangdong 510405,China;Guangzhou Collaborative Innovation Center on Science-Tech of Ecology and Landscape,Guangzhou,Guangdong 510405,China;College of Resources and Environment,Zhongkai University of Agriculture and Engineering,Guangzhou,Guangdong 510225,China)
出处
《森林与环境学报》
北大核心
2026年第1期51-59,共9页
Journal of Forest and Environment
基金
广州市林业和园林局部门预算项目“解磷菌-土壤有机改良材料的协同增效研究与应用”(2061900000139和穗财编〔2023〕1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)。
关键词
磷矿粉
解磷菌
丛枝菌根真菌
磷组分
土壤
ground phosphate rock
phosphorus-solubilizing bacteria
arbuscular mycorrhizal fungi
phosphorus components
soil
