不同肥料对退化茶园根际土壤微生物代谢活性和群落结构的影响

生态学杂志

不同肥料对退化茶园根际土壤微生物代谢活性和群落结构的影响

蒋宇航^1,2,林生^1,2*,林伟伟^1,2,陈婷^1,2,Yasir Arafat^1,2,位小丫^1,2,林文雄^1,2*#br#

(¹福建省农业生态过程与安全监控重点实验室，福建农林大学生命科学学院，福州 350002； ^2作物生态与分子生理学福建省高校重点实验室，福建农林大学，福州 350002)

出版日期:2017-10-10 发布日期:2017-10-10

Effects of different fertilizer applications on microbial metabolic activity and community structure in tea rhizosphere soil.

JIANG Yu-hang^1,2, LIN Sheng^1,2*, LIN Wei-wei^1,2, CHEN Ting^1,2, Yasir Arafat^1,2, WEI Xiao-ya^1,2, LIN Wen-xiong^1,2*#br#

(¹ Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China; ² Fujian Provincial Universities Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fuzhou 350002, China).

Online:2017-10-10 Published:2017-10-10

摘要/Abstract

摘要： 于福建省安溪县桃舟乡，选择宿根连作20年茶园进行田间试验。以未施肥 (CK)、氮肥 (NF)、羊粪 (GM) 及豆科绿肥 (LF) 等处理后的茶树根际土壤作为供试土样，分析不同肥料对茶树根际土壤理化特性、微生物代谢活性及其不同类型磷脂脂肪酸含量变化等影响。结果表明： NF、GM和LF均能够提高茶园土壤pH值和有机质 (OM) 及速效钾 (AK) 等含量，其pH分别提高0.47%、2.36%和2.13%；OM分别提高17.56%、27.48%和54.96%；AK分别提高56.10%、63.41%和73.17%；碱解氮 (AN) 和速效磷(AP)在NF处理下分别下降了9.10%和335.00%；在GM处理下分别提高了17.06%和2.11倍；在LF处理下分别提高了16.70%和3.88倍；同时，施肥能提高土壤脲酶、蔗糖酶、多酚氧化酶和过氧化物酶等活性，且提高效果由高到底依次为LF、GM、NF；酸性磷酸酶活性 (ACP) 和微生物对磷素利用率 (UTP) 在NF处理下分别降低70.04%和249.00%；在GM处理下分别提高了24.74%和1.80倍；在LF处理下分别提高34.28%和2.51倍；与此同时，GM和LF还能够提高根际土壤微生物群落丰度以及菌群多样性。综上所述，豆科绿肥和羊粪能够有效改善茶园土壤肥力，促进根际微生物对养分的代谢活性，对提升茶园经济效益和生态效益具有现实意义。

关键词: 抗折力, 自修复, 生长特性, 固土特性, 侧根分支处

Abstract: A field trial was conducted in tea garden where tea plants had been continuously monocultured for 20 years, located in Taozhou, Anxi of Fujian Province, with four treatments including no fertilization (CK), nitrogen fertilizer (NF), goat manure (GM) and leguminous green manure (LF), to investigate physicochemical properties, microbial metabolic activities and phospholipids fatty acid (PLFA) in tea rhizosphere soil. The results showed that pH, organic matter and available K were improved by 0.47%, 17.56% and 56.10% under NF, 2.36%, 27.48% and 63.41% under GM, and 2.13%, 54.96% and 73.17% under LF, respectively. The alkalytic N and available phosphorus were significantly decreased by 9.10% and 335.00% under NF, while increased by 17.06 and 211.00% under GM, and 16.70% and 388.00% under LF, respectively. Meanwhile, the activities of urease, sucrase, polyphenol oxidase and peroxidase were improved by NF, GM and LF, with the effect of improvement being in order of LF> GM> NF. Acid phosphatase activity and microbial P use rate were significantly decreased by 70.04% and 249.00% under NF, while increased by 24.74% and 180.00% under GM, and 34.28% and 251.00% under LF, respectively. Furthermore, microbial community abundance and bacterial diversity were dramatically improved under GM and LF. In conclusion, both GM and LF can improve soil fertility and promote microbial metabolic activities in tea rhizosphere soil, being meaningful to enhance economical and ecological efficiency of tea gardens.

Key words: growth characteristics, soil reinforcement, lateral-root branch, anti-fracture force, self-healing

蒋宇航1,2,林生1,2*,林伟伟1,2,陈婷1,2,Yasir Arafat1,2,位小丫1,2,林文雄1,2*. 不同肥料对退化茶园根际土壤微生物代谢活性和群落结构的影响[J]. 生态学杂志.

JIANG Yu-hang1,2, LIN Sheng1,2*, LIN Wei-wei1,2, CHEN Ting1,2, Yasir Arafat1,2, WEI Xiao-ya1,2, LIN Wen-xiong1,2*. Effects of different fertilizer applications on microbial metabolic activity and community structure in tea rhizosphere soil.[J]. cje.

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