沼液替代化肥施用对玉米生长及土壤肥力的影响

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中图分类号：S141 文献标识码：A 文章编号：1006-060X（2025）08-0049-05

Effects ofReplacing Chemical Fertilizer with Biogas Slurryon Maize Growth and Soil Fertility

HUANG Huan'，ZHOU Wei'，LIU Can'，WANG Yi1 ，CHU Fei²，LUO Zhuo²，PENG Zhi-hong²，ZHOU Xuan²（1.MiluoBureauofAgricultureandRuralAfairs，Muo444PRC;2.HunanIstituteofAgriculturalSilandEcoEotChangsha 410125， PRC）

Abstract：Thisstudyaimstoexplore theeffctofreplacingchemcalfertizerwithbiogasslurryinmaizeplantinganddeteinthe appropriateaplicationratio.Themaizecultivar Zhengda659'wasplantedandfertizedwithfivetreatments：nofertization（CK）， conventional fertilization （CF），optimized fertilization （OF），biogas slurry replacing 20% chemical fertilizer nitrogen （OM1），and biogasslurryreplacing 40% chemical fertilizer nitrogen （OM2）.Field plot experiments werecarried out to study the effects of biogas sluyreplacingratiounderequalitrogenontegowthyield，ndconomicbenefitofmaizeandtephyicochemicalpropertisof soil.The results showed that OF， OM1，and OM2 increased the maize yield by 0.88%-3.84% and economic benefit by 5.19%-37.80% compared with CF. Compared with OF， OM1 and OM2 increased the maize yield by 1.58% and 2.94% and the economic benefit by 17.69% and 31.00% ，respectivelyand theoutput-input ratioofOM2 was the highest.Compared withOF，replacing chemical fertilizer with biogassurreectivelyinceasedtheo-gainweghtandthecontentoftrgen，posporus，andcudefatindibleparts， whiledecreasingteotetoftotalposposisoil.IeealOFO，dcetielyreasesilrogtet facilitateplantutrienabsorption，andimproveyieldcomponents，yield，andualitythrebysvingostsandireasingioe. Replacing 40% fertilizer nitrogenwith biogas slurry（OM2）demonstratedbetter performance inimproving maize yield，maize quality and soil fertility.

Keywords：maize;retumingbiogasslurytothefield;chemicalfertilizerreduction;yield;economicbeneft;soilfertility

沼气工程可有效消纳农业有机废弃物，实现粪污的无害化处理与资源化利用。（剩余7949字）