畜牧与饲料科学 ›› 2022, Vol. 43 ›› Issue (2): 105-110.doi: 10.12160/j.issn.1672-5190.2022.02.017

• 畜牧资源与环境 • 上一篇    下一篇

3种绿肥翻压对浇灌沼液后土壤质量的影响

安晨1, 丁海荣1, 谭海运2, 时凯1, 杨智青1, 金崇富1, 侯福银1, 陈长宽1   

  1. 1.江苏沿海地区农业科学研究所/盐城市畜牧养殖装备工程技术研究中心,江苏 盐城 224002;
    2.西藏自治区农牧科学院农业资源与环境研究所,西藏 拉萨 850032
  • 收稿日期:2021-10-21 出版日期:2022-03-30 发布日期:2022-03-30
  • 通讯作者: 丁海荣(1979—),女,副研究员,硕士,主要从事循环农业技术与资源开发利用研究工作。
  • 作者简介:安晨(1994—),男,研究实习员,硕士,主要从事土壤改良研究工作。
  • 基金资助:
    西藏自治区科技计划项目(XZ-2019-NK-NS-005)。

Effects of Overturning Three Varieties of Green Manures on Soil Quality after Biogas Slurry Irrigation

AN Chen1, DING Hai-rong1, TAN Hai-yun2, SHI Kai1, YANG Zhi-qing1, JIN Chong-fu1, HOU Fu-yin1, CHEN Chang-kuan1   

  1. 1. Institute of Agricultural Science in Jiangsu Coastal Areas/Yancheng Engineering and Technology Research Center of Animal Husbandry Equipment,Yancheng 224002,China;
    2. Institute of Agricultural Resources and Environment,Tibet Academy of Agricultural and Animal Husbandry Sciences,Lhasa 850032,China
  • Received:2021-10-21 Online:2022-03-30 Published:2022-03-30

摘要: [目的] 研究多花黑麦草、大麦和油菜3种不同绿肥作物翻压还田在不同浓度沼液条件下对土壤质量的影响。[方法] 在8.5 L/m2(L1)和17 L/m2(L2)两种沼液浓度条件下,田间翻压多花黑麦草、大麦以及油菜,设为多花黑麦草(L1)、大麦(L1)、油菜(L1)和多花黑麦草(L2)、大麦(L2)、油菜(L2)几个绿肥试验组,同时设置只浇灌沼液未翻压绿肥的对照组(L1)和对照组(L2),分析绿肥试验组与对照组土壤中pH值与有机质、全氮含量等指标的差异。[结果] 绿肥翻压110 d后,多花黑麦草(L2)与大麦(L2)组土壤pH值显著(P<0.05)高于对照组(L2),但仅上升约0.17;大麦(L1)与多花黑麦草(L2)土壤盐分显著(P<0.05)高于同沼液添加量的对照组;大麦组土壤有机质含量在2种沼液浓度影响下均显著(P<0.05)高于各自对照组,同时油菜(L2)土壤有机质含量较对照组(L2)也有显著(P<0.05)提高;大麦组在2种沼液浓度下,土壤全氮含量均显著(P<0.05)高于各自对照组;多花黑麦草(L1)和大麦(L1)土壤有效磷含量显著(P<0.05)高于对照(L1);大麦(L2)组土壤速效钾含量显著(P<0.05)高于对照组(L2)。[结论] 3种绿肥翻压对浇灌沼液后土壤的改良作用各不相同,但大麦在2种浓度沼液替代氮肥情况下均可大幅提高土壤有机质和全氮含量,在低浓度沼液条件下可显著提高土壤有效磷含量,在高浓度沼液条件下可显著提高土壤速效钾含量,可作为一种新型绿肥使用。

关键词: 多花黑麦草, 大麦, 油菜, 绿肥, 沼液, 土壤养分

Abstract: [Objective] To assess the effects of overturning of three green manure crops, Lolium multiflorum, barley and oilseed rape, on soil quality under irrigation with varied concentrations of biogas slurry. [Method] Under two biogas slurry concentrations, 8.5 L/m2 (L1) and 17 L/m2 (L2), the green manures of Lolium multiflorum, barley and oilseed rape were applied, respectively. Under L1 biogas slurry concentration, experimental groups of Lolium multiflorum (L1), barley (L1), oilseed rape (L1) were set, and a control group of CL1 with biogas slurry irrigation without application of green manures were included. Under L2 biogas slurry concentration, experimental groups of Lolium multiflorum (L2), barley (L2), oilseed rape (L2) were set, and a control group of CL2 with biogas slurry irrigation without application of green manures were included. The differences in pH value as well as contents of organic matter and total nitrogen in soil were statistically analyzed among groups with the same biogas slurry concentration and the different varieties of green manures. [Result] After 110 days of green manures application, the soil pH value of Lolium multiflorum (L2) and barley (L2) groups was significantly (P<0.05) higher than that of CL2 group, with a mere 0.17 rise. The soil salinity of barley (L1) and Lolium multiflorum (L2) groups was significantly (P<0.05) higher than that of CL1 and CL2 groups, respectively. The content of soil organic matter of the two barley groups was significantly (P<0.05) higher than that of their respective control groups. The content of soil organic matter of oilseed rape (L2) group was also significantly (P<0.05) higher than that of CL2 group. The soil total nitrogen content of the two barley groups was significantly (P<0.05) higher than that of their respective control groups. The soil available phosphorus content of Lolium multiflorum (L1) and barley (L1) groups was significantly (P<0.05) higher than that of CL1 group. The soil available potassium content of barley (L2) group was significantly (P<0.05) higher than that of CL2 group. [Conclusion] The application of three varieties of green manures has different effects on soil improvement after biogas slurry irrigation. Barley significantly increases the soil contents of organic matter and total nitrogen when nitrogen fertilizer is replaced by both concentrations of biogas slurry. In addition, barley greatly increases the content of soil available phosphorus under low biogas slurry concentration, and significantly increases the content of soil available potassium under high biogas slurry concentration, suggesting that it can be utilized as a new type of green manure.

Key words: Lolium multiflorum, barley, oilseed rape, green manure, biogas slurry, soil nutrients

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