湖北农业科学 ›› 2023, Vol. 62 ›› Issue (4): 32-36.doi: 10.14088/j.cnki.issn0439-8114.2023.04.006

• 资源·环境 • 上一篇    下一篇

不同施肥模式对设施菜地土壤团聚体粒级分布和稳定性的影响

曹秀鹏1,2, 黄兴学1, 周国林1, 张润花1, 施玲芳1,2, 邓耀华1   

  1. 1.武汉市农业科学院蔬菜研究所,武汉 430300;
    2.华中农业大学园艺林学学院,武汉 430070
  • 收稿日期:2022-09-16 出版日期:2023-04-25 发布日期:2023-05-12
  • 作者简介:曹秀鹏(1997-),男,安徽宿州人,在读硕士研究生,研究方向为农业生态环境,(电话)18120561543(电子信箱)2679235432@qq.com;共同第一作者,黄兴学(1976-),男,湖北武汉人,高级农艺师,主要从事蔬菜栽培和育种技术研究,(电话)18986271411(电子信箱)hxx329517@126.com。
  • 基金资助:
    财政部和农业农村部国家现代农业产业技术体系资助项目(CARS-23)

Effects of different fertilization modes on soil aggregate particle size distribution and stability in protected vegetable fields

CAO Xiu-peng1,2, HUANG Xing-xue1, ZHOU Guo-lin1, ZHANG Run-hua1, SHI Ling-fang1,2, DENG Yao-hua1   

  1. 1. Institute of Vegetable Research, Wuhan Academy of Agricultural Sciences, Wuhan 430300, China;
    2. College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
  • Received:2022-09-16 Online:2023-04-25 Published:2023-05-12

摘要: 为探究不同施肥模式对设施菜地土壤团聚体粒级分布和稳定性的影响,设置不施肥(CK)、常规化肥(CF)、优化施肥(OF)、秸秆与常规化肥配施(CFS)和秸秆与优化施肥结合(OFS)5个处理。结果表明,相较于CK处理,干筛下,CF处理和CK处理的团聚体粒级分布基本一致,OF处理提高了>5 mm的团聚体含量,CFS处理提高了2~5 mm的团聚体含量,OFS处理提高了<1 mm的团聚体含量;湿筛下,OFS处理显著提高了2~5 mm和0.25~0.5 mm的团聚体含量,显著降低了<0.25 mm的微团聚体含量。此外,相较于CF处理和CK处理,OFS处理显著提高了>0.25 mm的水稳定性团聚体占比(WR0.25)、平均重量直径(MWD水稳性)和几何均重直径(GMD水稳性),显著降低了团聚体结构破坏率(PAD)。连续单施化肥对土壤团聚体粒级分布和稳定性影响较小,连续OFS处理对改善菜地土壤团聚体粒级分布和提高团聚体稳定性效果最佳。

关键词: 设施菜地, 施肥, 土壤团聚体, 粒级分布, 稳定性

Abstract: To investigate the effects of different fertilization modes on the particle size distribution and stability of soil aggregate in protected vegetable fields, five treatments were set up: no fertilization (CK), conventional fertilizer (CF), optimal fertilization (OF), combined application of straw and conventional fertilizer (CFS) and combined application of straw and optimal fertilization (OFS). The results showed that, compared with CK treatment, the particle size distribution of aggregates in CF and CK treatment was basically the same under dry sieving. The content of aggregates greater than 5 mm in OF treatment increased, the content of aggregates ranging from 2 to 5 mm in CFS treatment increased, and the content of aggregates less than 1 mm in OFS treatment increased; under wet sieving, OFS treatment significantly increased the content of 2~5 mm and 0.25~0.5 mm aggregates, and significantly decreased the content of microaggregates (<0.25 mm). In addition, compared with CF and CK treatment, OFS treatment significantly increased the proportion of water stable aggregates greater than 0.25 mm(WR0.25), average weight diameter(MWDwater stability) and geometric average weight diameter(GMDwater stability), and significantly reduced the aggregate structure damage rate(PAD). Continuous single application of chemical fertilizer had little effect on the particle size distribution and stability of soil aggregates, and continuous OFS treatment had the best effect on improving the particle size distribution and stability of soil aggregates in vegetable fields.

Key words: protected vegetable fields, fertilizer application, soil aggregate, particle size distribution, stability

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