山东科学 ›› 2022, Vol. 35 ›› Issue (6): 74-79.doi: 10.3976/j.issn.1002-4026.2022.06.010

• 农业微生物 • 上一篇    下一篇

土壤调理剂和木霉LTR-2联合施用对小油菜连作障碍土壤的修复

王贻莲1(), 黄鼎立2, 魏艳丽1, 李红梅1, 杨合同1, 李纪顺1,*()   

  1. 1.齐鲁工业大学(山东省科学院) 山东省科学院生态研究所 山东省应用微生物重点实验室,山东 济南 250103
    2.威海益丰农业科技有限公司,山东 威海 264200
  • 收稿日期:2022-03-28 出版日期:2022-12-20 发布日期:2022-12-02
  • 通信作者: 李纪顺 E-mail:yilianwang@163.com;yewu2@sdas.org
  • 作者简介:王贻莲(1978—),女,硕士,副研究员,研究方向为设施蔬菜田退化土壤的生物修复。Tel:13573791095,E-mail:yilianwang@163.com
  • 基金资助:
    齐鲁工业大学(山东省科学院)-威海市产学研协同创新基金(2020-CXY11);威海市政府-山东省科学院产学研协同创新基金(2020GC05)

Soil conditioner and Trichoderma LTR-2 combined application for remediation of continuous cropping obstacle soil in Brassica chinensis L.

WANG Yi-lian1(), HUANG Ding-li2, WEI Yan-li1, LI Hong-mei1, YANG Hong-tong1, LI Ji-shun1,*()   

  1. 1. Shandong Provincial Key Laboratory of Applied Microbiology, Ecology Institute of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103,China
    2. Weihai Yifeng Agricultural Science and Technology Co., Ltd. Weihai 264200,China
  • Received:2022-03-28 Online:2022-12-20 Published:2022-12-02
  • Contact: LI Ji-shun E-mail:yilianwang@163.com;yewu2@sdas.org

摘要:

为探寻叶菜在连作障碍土壤中的安全生产措施,采用设施大棚小区试验,以土壤pH、土壤电导率、病害防效及增产率为评价指标,研究了土壤调理剂和木霉LTR-2联合施用对小油菜连作障碍土壤的修复作用,并根据土壤养分含量测定结果,进行了减肥试验。结果显示:经7 500 kg /hm2土壤调理剂处理后,土壤pH由4.50升至6.95;土壤电导率由675.10 μS/cm降至519.70 μS/cm。施肥后与施肥前相比,B(土壤调理剂+有机肥I+复合肥)和C(土壤调理剂+有机肥I+LTR-2+复合肥)处理组中土壤pH均下降,土壤电导率均升高。经一茬种植后,与施肥后相比,收获时的pH分别从6.43和6.57降至6.06和6.26,土壤电导率由1 011.43 和959.47 μS/cm降至955.70 和863.43 μS/cm;与常规处理A(有机肥II+复合肥)组相比,小油菜种植前后,B和C处理组中土壤pH和土壤电导率都存在显著差异;B和C处理组中根腐病防效分别为65.39%和80.77%;增产率分别为27.48%和33.59%。A、B、C三个处理速效养分在土壤中均有不同程度的过剩累积。与常规处理A'(有机肥III+复合肥)组相比,D'(有机肥I+LTR-2+1/3复合肥)处理组在减施复合肥66.67%的情况下,增产率为9.31%。

关键词: 土壤调理剂, 木霉, 小油菜, 连作障碍, 土壤修复

Abstract:

To explore the measures for safely producing leafy vegetables and remediation effects of Brassica chinensis in continuous cropping obstacles soil, the greenhouse plot experiment was conducted in this study using soil with conditioner combined with Trichoderma LTR-2, taking soil pH, soil conductivity, disease control efficiency, and yield increase rate as evaluation indexes. According to the results of soil nutrient content, the experiment of fertilizer reduction. The results showed that the soil pH increased from 4.50 to 6.95 and soil conductivity decreased from 675.10 to 519.70 μS/cm after treatment with a 7 500 kg/hm2 conditioner. Compared with before fertilization, soil pH decreased and soil conductivity increased in B (conditioner + organic fertilizerⅠ+ compound fertilizer) and C (conditioner + organic fertilizerⅠ+ LTR-2 + compound fertilizer) treatment groups after fertilization. After one stubble of planting, pH value decreased from 6.43 and 6.57 to 6.06 and 6.26, respectively, and soil conductivity decreased from 1 011.43 and 959.47 μS/cmto 955.70 and 863.43 μS/cm, respectively. Compared with the conventional treatment group A (organic fertilizerⅡ+ compound fertilizer), there were significant differences in soil pH and soil conductivity in B and C treatment groups before and after Brassica chinensis vegetated. The control effects of root rot were 65.39% and 80.77%, and the yield increase rates were 27.48% and 33.59% in treatment groups B and C, respectively. The available nutrients of A, B, and C had different excess accumulations in the soil. Compared with conventional treatment A' (organic fertilizer III + compound fertilizer), under 66.67% compound fertilizer reduction, the yield increase rate of treatment group D' (organic fertilizerⅠ+ LTR-2 + 1/3 compound fertilizer) was 9.31%.

Key words: soil conditioner, Trichoderma spp., Brassica chinensis L., continuous cropping obstacle, soil remediation

中图分类号: 

  • S636