西北农业学报2026，Vol.35Issue(2)：222-232,11.DOI:10.7606/j.issn.1004-1389.2026.02.003
中药肥缓解荞麦后茬作物减产的作用及机理
Effects and Mechanisms of Traditional Chinese Medicine Fertilizer in Mitigating Yield Loss in Succeeding Crops after Buckwheat Cultivation
摘要
Abstract
Yield reduction in succeeding crops caused by buckwheat cultivation severely restricts the industrial development of buckwheat,while traditional fertilization methods have shown limited effec-tiveness.This study investigated the effects and underlying mechanisms of a traditional Chinese medi-cine(TCM)-based fertilizer in alleviating the growth inhibition of succeeding crops induced by buck-wheat cultivation through controlled pot experiments with maize.The biological and physiological pa-rameters of maize plants grown in soils previously cultivated with buckwheat(KQ)or left uncultivat-ed(control,CK)were compared to confirm the growth inhibition effects.Further,maize seedling performance,rhizosphere microbial community structure,network patterns,and predicted functions in response to the application of the TCM-based fertilizer in KQ soil(ZYKQ)were analyzed to uncov-er the mitigating effects and mechanisms on yield reduction in succeeding crops.The results showed that:(1)Maize plants grown in KQ soil exhibited 8.8%-35.3%reductions in plant height,dry weight,root morphology,and leaf chlorophyll content compared to those in CK soil,and these plant parameters improved by 14.7%-36.8%relative to KQ.(2)ZYKQ treatment increased rhizosphere bacterial α-diversity(Chao1 index)by 6.7%,promoted the enrichment of beneficial bacteria(e.g.,Sphingomonas),suppressed pathogenic fungi(e.g.,Fusarium),and enhanced bacterial network modularity and nutrient cycling functions,particularly carbohydrate metabolism.In conclusion,the TCM-based fertilizer effectively mitigates the growth inhibition of succeeding maize crops caused by buckwheat cultivation by enhancing rhizosphere microbial diversity and optimizing community struc-ture and function.These findings highlight the application potential of TCM agriculture technology for microecological soil remediation and offer a novel ecological regulation strategy to overcome the barriers to succeeding crop growth after buckwheat cultivation.关键词
前茬荞麦/后茬作物减产/玉米/根际微生物群落/中药肥Key words
Preceding buckwheat/Succeeding crop yield loss/Maize/Soil microbial community/Tra-ditional Chinese medicine fertilizer引用本文复制引用
郭悦,肖俊,许帅,吴钰鹏,况国高,来航线,郭俏..中药肥缓解荞麦后茬作物减产的作用及机理[J].西北农业学报,2026,35(2):222-232,11.基金项目
咸阳市重大科技创新专项(L2023-ZDKJ-CYJQ-NY-016). Major Scientific and Technological Innovation Special Projectof Xianyang Uygur Au-tonomous Region(No.L2023-ZDKJ-CYJQ-NY-016). （L2023-ZDKJ-CYJQ-NY-016）
