摘要
针对南方山地果园土壤贫瘠、养分利用率低等问题,采用土壤改良剂配施复合肥,提高土壤养分,改善细菌群落结构。结果表明,与对照相比,施用改良剂后土壤pH值、有机质、速效氮分别提高1.1%~12.2%、10.2%~37.2%、1.2%~15.4%,有效磷T_(1)处理(复合肥+有机肥)、T_(2)处理(复合肥+生石灰)表现为增加,T_(3)处理(复合肥+芽孢杆菌)则降低,改良剂添加后降低了速效钾含量,几种改良剂中T_(2)处理效果最好。改良剂施用后增加了微生物碳和微生物氮的含量,分别增加97.1%~463.7%和382.7%~1057.3%,T_(2)处理改良效果最好。施用土壤改良剂后细菌群落结构均有不同程度改变,其中T_(3)效果较为突出,分别提高了门水平Actinobacteriota(放线菌门)、Planctomycetota(浮霉菌门)、Methylomirabilota(甲基奇异菌门)、Latescibacterota相对丰度和属水平Rokubacteriales、Latescibacterota、OM190、Subgroup_22、KD4-96相对丰度。研究表明改良剂能明显改善土壤性质,其中以T_(2)处理对土壤养分提升效果最好,T_(3)处理对细菌群落结构改善效果最好。
In order to solve the problems of poor soil and low nutrient use efficiency in orchards in southern mountainous areas,soil conditioners were used to apply compound fertilizer to improve soil nutrients and bacterial community structure.The results showed that compared with the control,soil pH,organic matter and available nitrogen increased by 1.1%-12.2%,10.2%-37.2%and 1.2%-15.4%,respectively,the available phosphorus T_(1) and T_(2) treatments increased,while the T_(3) treatment decreased,and the available potassium content decreased after the addition of the improver,and the T_(2) treatment had the best effect.After the application of the amendment,the contents of microbial carbon and microbial nitrogen were increased by 97.1%-463.7%and 382.7%-1057.3%,respectively,and the improvement effect of T_(2) treatment was the best.The bacterial community structure changed to varying degrees after the application of soil amendment,and the effect of T_(3) was more prominent,which increased the relative abundance of Actinobacteriota,Planctomycetota,Methylomirabilota,Latescibacterota,and Rokubacteriales,respectively.Relative abundance of Latescibacterota,OM190,Subgroup_22,KD4-96.The results showed that the amendment could significantly improve soil properties,and T_(2) treatment had the best effect on soil nutrient improvement,and T_(3) treatment had the best effect on improving bacterial community structure.
作者
王红
赵晓珍
赵凯
何春丽
余江平
马玉华
WANG Hong;ZHAO Xiaozhen;ZHAO Kai;HE Chunli;YU Jiangping;MA Yuhua(Institute of Pomology,Guizhou Provincial Academy of Agricultural Sciences,Guiyang 550006,China;Guiyang Fruit Tree Technology Extension Station,Guiyang 550081,China;Institute of Subtropical Crops,Guizhou Provincial Academy of Agricultural Sciences,Guiyang 550006,China)
出处
《耕作与栽培》
2025年第4期35-38,44,共5页
Tillage and Cultivation
基金
黔农科院青年基金[2022]15号
黔科合平台人才-CXTD[2023]004
黔科合平台人才-GCC[2022]025-1
黔科合平台KXJZ[2024]024
财政部和农业农村部:国家现代农业产业技术体系(CARS-30)。
关键词
改良剂
土壤改良
养分
细菌群落结构
improver
soil improvement
nutrient
bacterial community structure
作者简介
王红(1994-),女(汉族),贵州贵阳人,硕士,助理研究员,主要从事果树栽培与生理生态研究(email:1138064298@qq.com);通信作者:马玉华(1979-),女(汉族),河南开封人,博士,研究员,主要从事果树栽培与生理生态研究(email:m_yh79@163.com)。
