| 摘要: |
| 为探究化肥减量以及有机肥的施用对林下药用植物土壤理化性质、 养分以及微生物群落的影响,
于 2023 年 5 月在广东省韶关市仁化县长江林场开展五指毛桃 Ficus hirta 施肥试验, 设置空白对照、 化肥、 有
机肥和化肥减量配施有机肥 4 个处理, 处理 1 a 后分析各处理土壤样品的 pH、 养分含量、 土壤细菌 α 多样性
和群落结构。 结果显示, 所有施肥处理与空白对照相比均显著提高了土壤中的铵解氮、 速效磷、 速效钾、 微
生物量碳和微生物量氮含量, 化肥减量配施有机肥处理显著提升微生物量碳和微生物量氮含量, 分别提高了
约 300%和 308% (P<0. 05)。 微生物群落分析表明, 有机肥和化肥减量配施有机肥处理显著提高了土壤细菌
的丰富度和多样性 (P<0. 05)。 所有施肥处理均降低了变形菌门 Proteobacteria 和酸杆菌门 Acidobacteriota 的
相对丰度, 而提高了绿弯菌门 Chloroflexi 和放线菌门 Actinobacteriota 的相对丰度。 研究表明, 化肥减量配施
有机肥处理可有效提高五指毛桃土壤微生物量碳和氮含量, 并改善土壤微生物群落结构。 |
| 关键词: 化肥减量 有机肥 土壤理化性质 土壤微生物群落 五指毛桃 |
| DOI： |
| 分类号: |
| 基金项目:广东省林业科技计划项目 (2024KJXM01)。 |
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| Effects of Reduced Chemical Fertilization Combined with Organic Fertilizer Application on the Soil Properlies in Ficus hirta Cultivation |
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HUANG JUN1, CHEN YINGLE2, LI WEN3
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1.GuangdongProvincialKeyLaboratoryofSilviculture,ProtectionandUtilization/GuangdongAcademyofForestry;2.Guangdong Academy of Forestry;3.Forestry Survey, Planning and Design Center of Renhua County Forestry Bureau
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| Abstract: |
| To investigate the effects of reduced chemical fertilization and organic fertilizer application on the
soil physicochemical properties, nutrients, and microbial community of understory medicinal plants, a fertilization experiment on Ficus hirta was conducted in May 2023 at Changjiang Forestry Farm in Renhua County, Shaoguan City, Guangdong Province. Four treatments were set up: a blank control, chemical fertilizer, organic
fertilizer, and reduced chemical fertilizer combined with organic fertilizer. After one year of treatment, the pH,
nutrient content, α-diversity of soil bacteria, and community structure of soil samples from each treatment were
analyzed. The results showed that compared with the blank control, all fertilization treatments significantly increased the contents of ammonium nitrogen, available phosphorus, available potassium, microbial biomass carbon, and microbial biomass nitrogen in the soil. The reduced chemical fertilizer combined with organic fertilizer treatment significantly increased the contents of microbial biomass carbon and microbial biomass nitrogen by approximately 300% and 308%, respectively (P<0. 05). Analysis of the microbial community indicated that the
organic fertilizer and reduced chemical fertilizer combined with organic fertilizer treatments significantly increased
the richness and diversity of soil bacteria (P<0. 05). All fertilization treatments reduced the relative abundances
of Proteobacteria and Acidobacteria, and increased the relative abundances of the Chloroflexi phylum and Actinobacteriota phylum. The results indicated that the reduced chemical fertilizer combined with organic fertilizer
treatment can effectively increase soil microbial biomass carbon and nitrogen content and improve the soil microbial community structure in F. hirta cultivation. |
| Key words: reduced chemical fertilization organic fertilizer soil physicochemical properties soil microorganism communities Ficus hirta |
