胡煜涛, 周军刚, 葛晓改, 高 歌, 徐耀文, 周本智, 范建忠, 柴 云. 生物质炭配施氮肥对雷竹林土壤养分迁移和土壤酶活性关系的影响研究[J]. 土壤通报, 2024, 55(5): 1405 − 1415. DOI: 10.19336/j.cnki.trtb.2023120401
引用本文: 胡煜涛, 周军刚, 葛晓改, 高 歌, 徐耀文, 周本智, 范建忠, 柴 云. 生物质炭配施氮肥对雷竹林土壤养分迁移和土壤酶活性关系的影响研究[J]. 土壤通报, 2024, 55(5): 1405 − 1415. DOI: 10.19336/j.cnki.trtb.2023120401
HU Yu-tao, ZHOU Jun-gang, GE Xiao-gai, GAO Ge, XU Yao-wen, ZHOU Ben-zhi, FAN Jian-zhong, CHAI Yun. Effects of Biochar Combined with Nitrogen Fertilizer on the Relationships between Soil nutrient Migration and Soil Enzyme Activities under Phyllostachys violascen Plantations[J]. Chinese Journal of Soil Science, 2024, 55(5): 1405 − 1415. DOI: 10.19336/j.cnki.trtb.2023120401
Citation: HU Yu-tao, ZHOU Jun-gang, GE Xiao-gai, GAO Ge, XU Yao-wen, ZHOU Ben-zhi, FAN Jian-zhong, CHAI Yun. Effects of Biochar Combined with Nitrogen Fertilizer on the Relationships between Soil nutrient Migration and Soil Enzyme Activities under Phyllostachys violascen Plantations[J]. Chinese Journal of Soil Science, 2024, 55(5): 1405 − 1415. DOI: 10.19336/j.cnki.trtb.2023120401

生物质炭配施氮肥对雷竹林土壤养分迁移和土壤酶活性关系的影响研究

Effects of Biochar Combined with Nitrogen Fertilizer on the Relationships between Soil nutrient Migration and Soil Enzyme Activities under Phyllostachys violascen Plantations

  • 摘要:
    目的 阐明生物质炭配施氮肥对雷竹林土壤养分迁移的影响,为雷竹林土壤质量提升提供理论依据。
    方法 于2020年10月 ~ 2021年5月以浙江省富阳区雷竹林为研究对象,即生物质炭分3个水平B0(0 t hm−2)、B1(10 t hm−2)、B2(30 t hm−2),氮肥分3个水平N0(0 t hm−2)、N1(0.5 t hm−2)、N2(1 t hm−2),生物质炭配施氮肥B0N0、B0N1、B0N2、B1N0、B1N1、B1N2、B2N0、B2N1、B2N2共9个处理,开展生物质炭配施氮肥对雷竹林土壤养分垂直迁移和土壤酶活性的影响研究,为雷竹林经营提供更加全面、精确的科学依据和指导。
    结果 结果表明:①生物质炭配施氮肥增加土壤养分,在0 ~ 15 cm土层中,低、高生物质炭配施氮肥显著增加土壤总磷,单施生物质炭显著增加土壤速效钾,生物质炭配施氮肥均显著增加土壤总氮、速效磷;在15 ~ 30 cm和30 ~ 50 cm土层中,生物质炭配施氮肥均显著增加土壤速效钾。在垂直方向上,生物质炭单施或配施氮肥在一定程度上促进养分迁移。②在水平方向相同土层中,纤维二糖酶,β-葡萄糖苷酶,β-N-乙酰氨基葡萄糖苷酶和亮氨酸氨基肽酶活性随生物质炭或氮肥添加量呈现不变或递增结果,多酚氧化酶活性在0 ~ 15 cm土层与氮肥添加量呈正相关。③土壤养分与土壤酶活性间存在相关性,土壤总氮、土壤总磷和土壤速效钾与纤维二糖酶、β-葡萄糖苷酶、β-N-乙酰氨基葡萄糖苷酶、亮氨酸氨基肽酶呈显著正相关(P< 0.05);土壤有机碳、土壤速效磷则与以上水解酶呈显著负相关(P < 0.05)。
    结论 雷竹林中适量的生物质炭配施氮肥对土壤养分及酶正向影响显著,生物质炭配施氮肥引起土壤酶活性变化是土壤养分迁移的关键因素,适量的生物质炭配施氮肥对提升雷竹林土壤有效养分和土壤酶活性有重要意义。

     

    Abstract:
    Objective Effects of biochar combined with nitrogen fertilizer on the vertical migration of soil nutrients were studied to provide theoretical basis for improving soil quality under Phyllostachys violascens plantations.
    Method The study object was P. violascens plantations, and the experiment was conducted from October 2020 to May 2021 in Fuyang District, Zhejiang Province. The experiment included nine treatments, three biochar levels (B0 0 t ha−1, B1 10 t ha−1, B2 30 t ha−1) and three nitrogen fertilizer levels (N0 0 t ha−1, N1 0.5 t ha−1, N2 1 t ha−1), B0N0, B0N1, B0N2, B1N0, B1N1, B1N2, B2N0, B2N1, B2N2. The vertical migration of soil nutrients and soil enzyme activities of P. violascens plantations were studied to provide a more comprehensive and precise scientific basis and guidance for the management under biochar combined with nitrogen fertilizer.
    Result ① Biochar combined with nitrogen fertilizer increased soil nutrients. In the 0 ~ 15 cm soil layer, the combined application of low and high dosage biochar significantly increased soil total phosphorus, only biochar addition significantly increased soil available potassium, and the combined application of biochar significantly increased soil total nitrogen and available phosphorus. In 15 ~ 30 cm and 30 ~ 50 cm soil layer, biochar combined with nitrogen fertilizer significantly increased soil available potassium. In soil vertical direction, biochar alone or in combined with fertilizer both promoted nutrient transport in some extent. ② In the same soil layer, the activities of cellobiohydrolase, β-glucosidase, β-N-acetyl-glucosidase and leucine aminopeptidase kept constant or increasing with the amount of biochar or nitrogen application. The polyphenol oxidase activity was positively correlated with nitrogen addition dosage in 0 ~ 15 cm soil layer. ③ There was a correlation between soil nutrients and soil enzyme activities. Soil total nitrogen, soil total phosphorus and soil available potassium were significantly positively correlated with cellobiase, β-glucosidase, β-N-acetylglucosaminase and leucine aminopeptidase (P < 0.05), while soil organic carbon and soil available phosphorus were significantly negatively correlated with the above hydrolases (P < 0.05).
    Conclusion  Appropriate amount of biochar combined with nitrogen fertilizer had significant positive effects on soil nutrients and enzymes. The change of soil enzyme activities caused by biochar combined with nitrogen fertilizer was the key factor for soil nutrient migration. Appropriate amount of biochar combined with nitrogen fertilizer was significant for improving soil available nutrients and soil enzyme activities under P. violascen plantation.

     

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