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应用生态学报 ›› 2022, Vol. 33 ›› Issue (3): 784-792.doi: 10.13287/j.1001-9332.202202.030

• 研究论文 • 上一篇    下一篇

日光温室黄瓜长期连作自毒物质累积与土壤肥力因子的关系

王爽, 郑世伟, 李笑, 张一迪, 吴桐, 富宏丹, 孙周平*   

  1. 沈阳农业大学园艺学院, 北方园艺设施设计与应用技术国家地方联合工程研究中心, 设施园艺省部共建教育部重点实验室, 辽宁省设施园艺重点实验室, 沈阳 110866
  • 收稿日期:2021-06-14 接受日期:2021-12-02 出版日期:2022-03-15 发布日期:2022-09-15
  • 通讯作者: * E-mail: sunzp@syau.edu.cn
  • 作者简介:王爽, 女, 1995年生, 博士研究生。主要从事设施蔬菜栽培与生理研究。E-mail: ws15542199225@163.com
  • 基金资助:
    国家重点研发计划项目(2020YFD100300)、辽宁省教育厅科研项目(LXZX202004,LSNFW201916)和现代农业产业技术体系专项资金(CARS-23)资助。

Relationship between accumulation of autotoxins and soil fertility factors under long-term continuous cropping of cucumber in solar greenhouse

WANG Shuang, ZHENG Shi-wei, LI Xiao, ZHANG Yi-di, WU Tong, FU Hong-dan, SUN Zhou-ping*   

  1. National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Ministry of Education Key Laboratory of Protected Horticulture, Liaoning Key Laboratory of Horticulture, College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
  • Received:2021-06-14 Accepted:2021-12-02 Online:2022-03-15 Published:2022-09-15

摘要: 以日光温室连作第2、6、10、14、18、20、24、26茬次的黄瓜根际土壤为研究材料,研究了长期连作对黄瓜根际土壤酚酸类物质的影响及其与土壤化学性质、酶活性、微生物活性的关系。结果表明: 随着连作茬次的增加,酚酸类物质含量显著增加,且茬次间的总酚增长量在连作前期(0~2茬)和后期(20~26茬)显著高于连作中期(10~14茬);土壤中养分含量富集,蔗糖酶活性和微生物活性降低。冗余分析结果表明,有机质、全磷、全氮、碱解氮、微生物生物量碳和微生物代谢熵是与酚酸物质累积相关的主要土壤肥力因子。结构方程模型分析发现,土壤中磷富集会直接导致酚酸物质的累积,氮富集通过影响微生物活性间接促进酚酸物质的累积。因此,生产中合理施用氮磷肥能减少酚酸物质累积,减缓黄瓜连作障碍。

关键词: 日光温室, 黄瓜连作, 酚酸, 自毒物质, 土壤因子

Abstract: In this study, we investigated the effects of long-term continuous cucumber cropping on phenolic acids in rhizosphere soil, as well as their link to soil chemical characteristics, enzyme activities, and microbiological activities, using rhizosphere soil from the 2nd, 6th, 10th, 14th, 18th, 20th, 24th, and 26th round of cucumber cultivation in solar greenhouse. The results showed that contents of phenolic acids increased significantly with increasing continuous cropping rounds. The increase amount per round of total phenolic acid was significantly higher in the early stage (0-2 rounds) and late stage (20-26 rounds) than middle stage (10-14 rounds) of continuous cropping. Soil nutrient contents were enriched, while invertase enzyme activity and microbial activities were decreased. Redundancy analysis showed that organic matter, total phosphorus, total nitrogen, available nitrogen, microbial biomass carbon and microbial metabolic entropy were main soil fertility factors correlating with the accumulation of phenolic acids. Results of structural equation model showed that soil phosphorus enrichment directly led to the accumulation of phenolic acids, and that nitrogen enrichment indirectly facilitated the accumulation of phenolic acids by altering the activity of microorganisms. As a result, proper nitrogen and phosphorus fertilizers application would reduce the accumulation of phenolic acids and alleviate the cucumber continuous cropping obstacles.

Key words: solar greenhouse, cucumber continuous cropping, phenolic acid, autotoxin, soil factor