山东农业科学2023，Vol.55Issue(11)：122-127,6.DOI:10.14083/j.issn.1001-4942.2023.11.018
施肥对黄土丘陵区土壤养分及微生物群落结构的影响
Effects of Fertilization on Soil Nutrients and Microbial Community Structure in Loess Hilly Region
摘要
Abstract
In order to explore the interaction mechanism between cultivated soil nutrients and soil micro-bial communities in the Loess Hilly Region,the phospholipid fatty acid(PLFA)method was used to study the effects of five fertilization treatments,including no fertilizer(CK),organic fertilizer(M),nitrogen and phos-phorus fertilizers(NP),nitrogen,phosphorus and potassium fertilizers(NPK)and organic fertilizer com-bined with nitrogen and phosphorus fertilizers(MNP),on soil nutrients and microbial community structure and their relationships.The results showed that the effects of soil nutrients on microbial communities were dif-ferent with different fertilization treatments.The contents of soil nutrients were significantly affected by different fertilization treatments,and those under CK and chemical fertilizer treatments were lower than those under M and MNP treatments.Fertilization treatments could significantly affect the microbial community structure by providing nutrients for soil microorganisms.The soil microbial community structure under M treatment,espe-cially MNP treatment,had significant changes compared with CK,NP and NPK treatments.MNP treatment could increase the biomass of bacteria,actinomycetes and total microbial biomass,reduce the ratio of Gram-positive to Gram-negative bacteria and the ratio of fungi to bacteria,improve the microbial nutrient utilization capacity,and increase the community diversity.In conclusion,the results of this study could provide ascientif-ic bases for increasing soil fertility and developing farmland ecological management model in the Loess Hilly Region.关键词
施肥/土壤微生物/黄土丘陵区/土壤养分/磷脂脂肪酸/群落结构Key words
Fertilization/Soil microorganism/Loess Hilly Region/Soil nutrients/Phospholipid fatty acid(PLFA)/Community structure分类
农业科技引用本文复制引用
刘强,王瑞,梁艳,何亚兰,南岭,王晓琨,徐德华..施肥对黄土丘陵区土壤养分及微生物群落结构的影响[J].山东农业科学,2023,55(11):122-127,6.基金项目
国家自然科学基金项目(42077075) （42077075）
国家重点研发计划重点专项(2017YFE0118100) （2017YFE0118100）
甘肃省自然科学基金项目(22JR5RE195) （22JR5RE195）
