摘要
为了探究化肥减量配施两种不同黄腐酸钾有机肥对土壤有机碳(SOC)及其组分的影响,采取盆栽试验模拟大田花生种植,以不施肥、纯施化肥为对照,设置100%化肥配施100%有机肥、75%化肥配施25%有机肥、50%化肥配施50%有机肥、25%化肥配施75%有机肥和施用100%有机肥处理,探讨了SOC、可溶性有机碳(DOC)、微生物生物量碳(MBC)、易氧化有机碳(LOC)和惰性有机碳(ROC)在花生不同生育期内的含量特征。结果表明:化肥减量配施有机肥各处理SOC及其组分含量在花生各生育期均表现为:花针期显著高于结荚期和成熟期,其中DOC和MBC含量结荚期显著高于成熟期(P<0.05);各处理SOC及其组分含量均表现为:25%化肥配施75%生化黄腐酸钾处理显著高于不施肥、单施化肥和单施有机肥处理,50%化肥配施50%矿源黄腐酸钾处理显著高于不施肥、单施化肥和单施有机肥处理;其中花针期25%化肥配施75%生化黄腐酸钾处理SOC、DOC、MBC、LOC和ROC含量分别为133.0 g/kg、284.4 mg/kg、269.7 mg/kg、30.76 g/kg和111.2 g/kg,50%化肥配施50%矿源黄腐酸钾处理SOC、DOC、MBC、LOC和ROC含量分别为130.9 g/kg、250.5 mg/kg、251.7 mg/kg、29.86 g/kg和110.8 g/kg。综上,化肥减量配施生化黄腐酸钾对SOC及其组分含量的影响整体优于配施矿源黄腐酸钾,化肥减量配施黄腐酸钾花针期含量显著高于结荚期和成熟期(P<0.05),其中25%化肥配施75%生化黄腐酸钾处理对提升SOC及其组分含量效果最佳。
In order to explore the effects of chemical fertilizer(CF)reduction combined with organic fertilizers(OF biochemical or mineral fulvic acid potassium)on soil organic carbon(SOC)and its components,pot experiment was conducted to simulate field peanut planting,the treatments included:no fertilization(CK1)and pure chemical fertilizer(CK2)as controls,and 100%chemical fertilizer combined with 100%organic fertilizer(100%CF+100%OF),75%chemical fertilizer combined with 25%organic fertilizer(75%CF+25%OF),50%chemical fertilizer combined with 50%organic fertilizer(50%CF+50%OF),25%chemical fertilizer combined with 75%organic fertilizer(25%CF+75%OF),and 100%organic fertilizer(100%OF).The content characteristics of SOC,soluble organic carbon(DOC),microbial biomass carbon(MBC),labile organic carbon(LOC)and recalcitrant organic carbon(ROC)were determined and discussed in different peanut growth stages.The results showed that SOC content and its components in each treatment of CF reduction combined with OF was significantly higher in flowering stage than in podding and mature stages,and the content of DOC and MBC was significantly higher in podding stage than in mature stage(P<0.05).SOC contents and its components under 25%CF+75%biochemical OF and under 50%CF+50%mineral OF were significantly higher than under CK1,CK2 and 100%OF.In flowering stage,the contents of SOC,DOC,MBC,LOC and ROC were 133.0 g/kg,284.4 mg/kg,269.7 mg/kg,30.76 g/kg and 111.2 g/kg respectively under 25%CF+75%biochemical OF,130.9 g/kg,250.5 mg/kg,251.7 mg/kg,29.86 g/kg and 110.8 g/kg respectively under 50%CF+50%mineral OF.In summary,the effects of CF reduction combined with biochemical OF on SOC content and its components are better than with mineral OF,the effects of CF combined with OF is better in flowering stage than in podding and maturity stages,and 25%CF+75%biochemical OF is better in improving SOC and its components.
作者
张慧
王斌
孙九胜
孙晨
槐国龙
崔磊
ZHANG Hui;WANG Bin;SUN Jiusheng;SUN Chen;HUAI Guoong;CUI Lei(Institute of Soil Fertilizer and Agricultural Water Saving,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China;College of Life Science and Technology,Xinjiang University,Urumqi 830046,China)
出处
《土壤》
CAS
CSCD
北大核心
2024年第2期333-341,共9页
Soils
基金
自治区重大科技专项(2022A02007-3-3)
自治区重点研发专项(2021B02003-1)资助。
关键词
化肥替代
花生
土壤
有机碳及其组分
Chemical fertilizer substitution
Peanuts
Soil
Organic carbon and its components
