Lynn Tin Mar, Zhran Mostafa, Wang Liu Fang, Ge Tida, Yu San San, Kyaw Ei Phyu, Latt Zaw Ko, Htwe Tin Mar
Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125 China.
Microbiology Division, Biotechnology Research Department, Ministry of Education, Kyaukse, Mandalay Region 100301 Myanmar.
3 Biotech. 2021 Apr;11(4):154. doi: 10.1007/s13205-021-02705-y. Epub 2021 Mar 3.
Changing land use systems impact on local edaphic factors and microbial abundance and diversity, however, the information on it in central Myanmar's soils is still lacking. Therefore, soils with four different land uses were analyzed; WAP (soil from perennial tree orchard), PNON (soil from crop rotation of peanut and onion), SESA (soil from mono-crop of sesame) and CHON (soil from mono-crop of onion for 3 years consecutively). Soil organic carbon (SOC), total nitrogen (TN), dissolved organic carbon (DOC), ammonium nitrogen (NH -N) and pH showed the highest in PNON soil, which suggested crop rotation with high fertilizer input and irrigation had positive effect on the edaphic factors of soil. CHON soil showed the lowest in most soil properties and microbial abundance as a result of intensive use of fertilizer and irrigation, no crop rotation and no input of manures. Microbial community composition showed differences among tested soils and relative abundance of was the highest in CHON soil whereas that of was the highest in WAP soil. The abundances of bacteria and fungi were significantly affected by Olsen , whereas the abundances of archaea were influenced by SOC. Our results suggested crop rotation and manure fertilization (PNON soil) enhanced soil properties and microbial abundance although long-time onion mono-crop (CHON soil) reduced soil fertility. This study can provide information to improve soil quality and sustainability of agro-ecosystems using appropriate agricultural management.
The online version contains supplementary material available at 10.1007/s13205-021-02705-y.
土地利用系统的变化会影响当地土壤因子以及微生物的丰度和多样性，然而，缅甸中部土壤的相关信息仍然匮乏。因此，对四种不同土地利用方式下的土壤进行了分析，分别是：WAP（多年生果园土壤）、PNON（花生和洋葱轮作土壤）、SESA（芝麻单作土壤）和CHON（连续三年洋葱单作土壤）。土壤有机碳（SOC）、总氮（TN）、溶解有机碳（DOC）、铵态氮（NH -N）和pH值在PNON土壤中最高，这表明高施肥量和灌溉的作物轮作对土壤的土壤因子有积极影响。由于大量施肥和灌溉、没有作物轮作以及没有粪肥投入，CHON土壤的大多数土壤性质和微生物丰度最低。微生物群落组成在测试土壤之间存在差异， 在CHON土壤中的相对丰度最高，而 在WAP土壤中的相对丰度最高。细菌和真菌的丰度受 Olsen 显著影响，而古菌的丰度受SOC影响。我们的结果表明，作物轮作和粪肥施肥（PNON土壤）提高了土壤性质和微生物丰度，而长期洋葱单作（CHON土壤）降低了土壤肥力。本研究可为采用适当农业管理措施改善土壤质量和农业生态系统可持续性提供信息。
在线版本包含可在10.1007/s13205-021-02705-y获取的补充材料。
