不同秸秆还田模式对冬小麦土壤活性有机碳库的影响
- 分享到:
摘要：
为探寻最适宜小麦种植的秸秆还田模式，优化土壤结构、提升土壤质量，采用根箱培养,以不施肥(CK)为对照，设置不同秸秆还田方式配施化肥共6个处理，即秸秆还田(SF)、秸秆生物炭还田（BF）、秸秆配施腐熟剂还田(SDF)、秸秆配施纳米载体腐熟剂还田(SNDF)以及单施化肥（F）。结果表明：所有处理在不同时期的土壤活性有机碳库组分质量分数基本表现为随土层的加深而降低，SNDF处理在小麦成熟期的表层土壤总有机碳(SOC)、土壤可溶性有机碳（DOC0）、土壤微生物量碳（MBC）质量分数分别为36.40g/kg、491. 56mg/kg、273.10mg/kg，土壤碳库管理指数为225.7%；SDF在小麦成熟期的土壤活性有机碳(LOC)质量分数为7.79g/kg；SOC、土壤DOC、土壤 MBC、土壤LOC和碳库管理指数之间均存在极显著的正相关性(P<0.01)。研究发现SNDF处理对冬小麦土壤有机碳组分及土壤碳库管理指数的改善效果最好，该结果为秸秆还田与化肥配施在农业生产上的应用提供了理论依据和研究基础。
Thisexperimentwasconducted to find outthe mostsuitable straw return modeforwheatcultivation, toopti- mizesoilstructureand to improvesoilquality. In thisstudy, weused rootboxculture, no fertilizer(CK) asthecontrol, and set up six treatments, namely:straw-farming(SF) , straw-biochar-farming(BF) , straw-decomposing(SDF) , straw-nanocarrier-de- composing(SNDF) , and fertilizer-application alone(F) , for the different methods of straw-farming and fertilizer application. The results showed thatthe contentsofsoilactiveorganiccarbon poolcomponents in alltreatments atdifferenttimesgenerally decreased with the deepening ofthe soillayer, and the contents oftotalsoilorganic carbon(SOC) , soilsoluble organic carbon (DOC) , and soilmicrobial biomass carbon(MBC)in the surface soilof SNDF treatment at the maturity stage of wheat were 36. 40 g/kg, 491. 56 mg/kg, 273. 10 mg/kg. And the soilcarbon poolmanagementindex was225. 7% ; the soilLOC contentof SDF was 7. 79g/kg atthe maturity stage of wheat; and there was a significant positive correlation between SOC, soilDOC, soilMBC, soilLOC, and the carbon poolmanagementindex(P<0. 01) . In conclusion, theSNDF treatmenthad thebesteffect on the improvementofsoilorganic carbon fractions and soil carbon pool management index in winter wheat, and the results provide a theoreticalbasis and research foundation forthe application ofstraw return and fertilizerblending in agriculturalpro- duction.
作者：
张黛静，刘毅昕，陈慧平，方凌，李春喜，王岚
Zhang Daijing, Liu Yixin, Chen Huiping, FangLing, LiChunxi, Wang Lan
机构地区：
betway官方app 生命科学学院
引用本文：
张黛静，刘毅昕，陈慧平等。不同秸秆还田模式对冬小麦土壤活性有机碳库的影响[J]。betway官方app 学报(自然科学版),2024,52(6):1-9。(Zhang Daijing,Liu Yixin,Chen Huiping,etal.Effects of different straw-returning modes on active organic carbon pools in wheat soils[J] . Journal of Henan Normal University(Natural Science Edition) ,2024,52(6) :1-9. DOI:10. 16366/j. cnki.1000-2367. 2024. 03. 07. 0004. )
基金：
国家重点研发计划项目
关键词：
秸秆还田；土壤活性有机碳库；碳库管理指数
straw return; soilactive organic carbon pools; carbon poolmanagementindexes
分类号：
S153. 6
