您好，欢迎访问中国热带农业科学院 机构知识库！
中国热带农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Legume cover crops alter soil phosphorus availability and microbial community composition in mango orchards in karst areas

文献类型： 外文期刊

作者： Dong, Rongshu 1 ; Hu, Wen 2 ; Bu, Lianyan 3 ; Cheng, Hanting 3 ; Liu, Guodao 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou 571101, Hainan, Peoples R China

2.Guizhou Univ, Coll Resources & Environm Engn, Guiyang 550025, Peoples R China

3.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Haikou 571101, Peoples R China

4.Hainan Danzhou Trop Agroecosyst Natl Observat & Re, Danzhou 571737, Peoples R China

5.Minist Agr & Rural Affairs, Key Lab Low Carbon Green Agr Trop Reg China, Beijing, Peoples R China

6.Hainan Prov Key Lab Trop Ecocycle Agr, Haikou 571101, Hainan, Peoples R China

7.Natl Key Lab Trop Crop Breeding, Sanya 571101, Peoples R China

关键词： Legume crops; Phosphorus fractions; Available phosphorus; phoD -harboring bacteria; Fungal community

期刊名称：AGRICULTURE ECOSYSTEMS & ENVIRONMENT （ 影响因子：6.6； 五年影响因子：6.7 ）

ISSN： 0167-8809

年卷期： 2024 年 364 卷

页码：

收录情况： SCI

摘要： Cover cropping in orchard systems is an efficient approach to enhance soil available phosphorus (P). However, the impact of legume species on available P and P fractions, as well as the microbial response to legume cover cropping in karst mango orchard soil in China, is not well understood. To elucidate these unknowns, the responses of soil P availability, P fractions, and phoD-harboring microbial communities in karst areas to the cover cropping of three legume species (Desmodium intortum (DI), Chamaecrista rotundifolia (CR), and Vicia villosa Roth (VR)) in mango orchard soils in a karst region were investigated using conventional clear tillage as the control. In the 0-10 cm soil layer, legume cover crops led to significant rise in total P, labile-P (i.e., Resin-P and NaHPO3-P-i), and moderate-P (NaOH-P-o) fractions, potentially increasing the supply of soil P. Among the three cover crops, only the CR treatment resulted in a significant rise (P < 0.05) in the soil available P. In the 10-20 cm soil layer, most of the labile-P fractions did not increase with legume cover crops. The biomass of bacteria, fungi, Actinomycetes, and arbuscular mycorrhizal fungi increased in mango orchard soil with legume crops. Legume cover crops significantly improved the richness of phoD-harboring bacteria and fungi (P < 0.05) and promoted the growth of specific P-solubilizing bacteria, which facilitated P fraction transformation by soil phosphatase. Moreover, the increased co-presence of phoD-harboring bacterial and fungal networks was observed after legume cover cropping. Redundancy analysis indicated that increases in total nitrogen, phosphodiesterase activity, and P-solubilizing bacteria (such as Bradyrhizobium) are important drivers of soil P availability. Collectively, the results indicate that in karst areas, legume cover crops in mango orchards can promote soil P cycling, and that planting C. rotundifolia in particular can effectively improve soil P availability.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国热带农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台