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园艺学报 ›› 2015, Vol. 42 ›› Issue (10): 2039-2048.doi: 10.16420/j.issn.0513-353x.2015-0192

• 研究报告 • 上一篇    下一篇

草莓连作土壤灭菌与施用有机肥对根际土壤酚酸及土壤酶活性的影响

田给林1,2,严婷婷1,毕艳孟3,孙振钧3,张潞生1,*   

  1. 1中国农业大学农学与生物技术学院,北京 100193;2山东菏泽学院园林工程系,山东菏泽 274000;3中国农业大学资源与环境学院,北京 100193
  • 出版日期:2015-10-25 发布日期:2015-10-25
  • 基金资助:

    教育部高等学校博士学科点专项科研基金项目(20110008130003);北京市大学生创新训练项目(2014bj011)

Effects of Continuous Cropping Soil Sterilization and Applying of Different Fertilizer on Phenolic Acids in Rhizosphere Soil of the Strawberry Plants and Soil Enzyme Activities

TIAN Gei-lin1,2,YAN Ting-ting1,BI Yan-meng3,SUN Zhen-jun3,and ZHANG Lu-sheng1,*   

  1. 1College of Agriculture and Biotechnology,China Agricultural University,Beijing 100193,China;2Department of Botanical Garden Engineering,Heze University,Heze,Shandong 274000,China;3College of Resources and Environmental Science,China Agricultural University,Beijing 100193,China
  • Online:2015-10-25 Published:2015-10-25

摘要:

针对草莓连作土壤灭菌后与正茬相比草莓植株根系生长受到抑制,研究了连作土壤灭菌与施用不同种类肥料对草莓幼苗(移栽60 d后)根系分泌酚酸及土壤相关酶活性的影响。结果表明:连作土壤灭菌与施用有机肥料处理显著提高了草莓植株根际土壤中酚酸的含量,其中施用蚯蚓粪(经蚯蚓食用处理的牛粪)的增幅显著低于施用牛粪。土壤灭菌处理后施加不同肥料,土壤多酚氧化酶活性均能较快恢复;有机肥较无机肥能显著促进过氧化氢酶活性的恢复;蚯蚓粪较牛粪和无机肥能显著促进土壤脲酶活性的提高;土壤蔗糖酶受土壤灭菌影响显著降低且施加不同肥料对其没有显著地影响。综上所述,对于草莓连作土壤,无论灭菌与否,施用蚯蚓粪较牛粪能减轻连作障碍中的酚酸化感效应,促进脲酶等土壤相关酶活性提高,是缓解连作障碍及连作土壤灭菌对草莓植株生长发育影响的有效措施。

关键词: 草莓, 连作障碍, 土壤灭菌, 肥料, 酚酸, 土壤酶

Abstract:

Soil sterilization is one of the most efficiency methods to remit continuous cropping obstacle and the growth of strawberry plants root still exhibits significant restrained compared with that grown in normal cropping soil. A pot experiment was conducted to verify the effect of sterilizing and different kinds of fertilizer on phenolic acids in rhizosphere soil and soil enzyme activities before flowering of strawberry plants which had grown up to 60 days since transplanting. The results showed that soil sterilization or applying organic fertilizer could significantly(P < 0.05)promote phenolic acids content increasing in rhizosphere soil of strawberry plant compared with unsterilized soil and applying inorganic fertilizer,and the increasing of phenolic acid applied with vermicompost was significantly(P < 0.05)lower than that applied with cattle manure. After soil sterilization,the activity of soil polyphenol oxidase could be recovered if applying organic fertilizer. The activity of soil catalase could be faster recovered if applying organic fertilizer than inorganic fertilizer. Applying vermicompost could significantly(P < 0.05)promote the activity of soil urease compared with applying cattle manure or inorganic fertilizer. The activity of soil sucrase decreased significantly(P < 0.05)because of soil sterilization and there are no significant difference between treatments of applying different fertilizers. Overall,our results suggested that application of vermicompost which can alleviate the effects of phenolic acids in rhizosphere soil and improve soil urease and other related enzyme activity is an effective measure to alleviate soil sterilization effect on strawberry plant growth and development in a continuously mono-cropped strawberry system.

Key words: strawberry, continuous cropping problem, soil sterilization, fertilizer, phenolic acid, soil enzyme

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