陈苏;谢建坤;黄文新;陈登云;彭晓剑;付学琴;

• 1:江西师范大学生命科学学院
• 2:江西省农业厅
• 3:江西省高安市农业局
• 4:安义县农业局

摘要(Abstract)：

【目的】探明果园生草后土壤有机碳及其组分的变化情况,为构建合理的果园土壤管理模式提供科学依据,进而推进‘南丰蜜橘’产业可持续发展。【方法】以‘南丰蜜橘’园为对象,分析行间播种白三叶草(Trifolium repens)、黑麦草(Lolium multiflorum)和清耕条件下土壤总有机碳(TOC)、微生物量碳(MBC)、水溶性有机碳(WSOC)、易氧化有机碳(ROC)、轻组有机碳(LFOC)、重组有机碳(HFOC)、团聚体有机碳的差异。【结果】与清耕对照相比,生草后能明显提高土壤TOC、MBC、WSOC、ROC、LFOC、HFOC的含量,其中种植白三叶草后分别提高了11.74%、52.69%、80.20%、67.95%、92.45%、18.08%,种植黑麦草后分别提高了3.72%、19.38%、23.35%、32.69%、56.60%、7.51%,且2者间差异均达到显著水平,表明豆科类牧草白三叶草处理在提高土壤各有机碳含量上优于禾本科类牧草黑麦草处理。生草处理能显著提高粒级>2 000μm和粒级250² 000μm团聚体和团聚体中的有机碳含量,降低粒级532 000μm团聚体和团聚体中的有机碳含量,降低粒级53²50μm微团聚体占比。【结论】生草能明显提高‘南丰蜜橘’园土壤有机碳含量,改善土壤结构稳定性,提升土壤质量。

关键词(KeyWords)： ‘南丰蜜橘’园;果园生草;土壤有机碳

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(31760547)

作者(Authors): 陈苏;谢建坤;黄文新;陈登云;彭晓剑;付学琴;

DOI: 10.13925/j.cnki.gsxb.20170325

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