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
发布时间：2018-09-17 08:39
【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。
[Abstract]:A field experiment was conducted in Taozhou Township, Anxi County, Fujian Province. The soil of tea rhizosphere treated with unfertilized (CK), nitrogen fertilizer (NF), sheep manure (GM) and leguminous green manure (LF) were used as soil samples to analyze the physicochemical properties of different fertilizers on tea rhizosphere soil. The metabolic activity of microorganism and the change of phospholipid fatty acid content were studied. The results showed that pH value, organic matter (OM) and available potassium (AK) contents in tea garden soil could be increased by both pH and LF. Its pH increased by 0.473.36% and 2.1313%, and increased by 17.56% and 54.96%, 63.41% and 73.17.1%, respectively, (AN) and available phosphorus (AP) decreased 9.10% and 335.00% respectively under NF treatment, 17.06% and 2.11 times higher under GM treatment, 16.70% and 3.88 times higher under LF treatment, respectively. At the same time, fertilization could increase the activities of urease, sucrase, polyphenol oxidase and peroxidase. The results showed that LF,GM,NF; acid phosphatase activity (ACP) and microbial phosphorus utilization ratio (UTP) decreased by 70.04% and 249.00% under NF treatment, 24.74% and 1.80 times under GM treatment, 34.28% and 2.51 times under LF treatment, respectively. At the same time, GM and LF can also improve the abundance and diversity of microbial community in rhizosphere soil. To sum up, legume green manure and sheep dung can effectively improve soil fertility, promote the metabolic activity of rhizosphere microorganisms to nutrients, and have practical significance to enhance the economic and ecological benefits of tea garden.
【作者单位】： 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;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;
【基金】：农业部“948”计划资助项目(2014-Z36) 国家重点研发计划项目(2016YFD0200900) 福建省重大农技推广服务试点项目(KNJ-153015)资助
【分类号】：S154.3;S571.1
[Abstract]:A field experiment was conducted in Taozhou Township, Anxi County, Fujian Province. The soil of tea rhizosphere treated with unfertilized (CK), nitrogen fertilizer (NF), sheep manure (GM) and leguminous green manure (LF) were used as soil samples to analyze the physicochemical properties of different fertilizers on tea rhizosphere soil. The metabolic activity of microorganism and the change of phospholipid fatty acid content were studied. The results showed that pH value, organic matter (OM) and available potassium (AK) contents in tea garden soil could be increased by both pH and LF. Its pH increased by 0.473.36% and 2.1313%, and increased by 17.56% and 54.96%, 63.41% and 73.17.1%, respectively, (AN) and available phosphorus (AP) decreased 9.10% and 335.00% respectively under NF treatment, 17.06% and 2.11 times higher under GM treatment, 16.70% and 3.88 times higher under LF treatment, respectively. At the same time, fertilization could increase the activities of urease, sucrase, polyphenol oxidase and peroxidase. The results showed that LF,GM,NF; acid phosphatase activity (ACP) and microbial phosphorus utilization ratio (UTP) decreased by 70.04% and 249.00% under NF treatment, 24.74% and 1.80 times under GM treatment, 34.28% and 2.51 times under LF treatment, respectively. At the same time, GM and LF can also improve the abundance and diversity of microbial community in rhizosphere soil. To sum up, legume green manure and sheep dung can effectively improve soil fertility, promote the metabolic activity of rhizosphere microorganisms to nutrients, and have practical significance to enhance the economic and ecological benefits of tea garden.
【作者单位】： 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;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;
【基金】：农业部“948”计划资助项目(2014-Z36) 国家重点研发计划项目(2016YFD0200900) 福建省重大农技推广服务试点项目(KNJ-153015)资助
【分类号】：S154.3;S571.1
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