翻压春油菜对土壤团聚体及腐殖质结合形态的影响

doi:10.7668/hbnxb.20192046

摘要/Abstract

摘要： 为提高华北地区土壤有机质含量，改善有机质品质，合理开发利用绿肥资源提供理论依据和数据支撑。采用田间小区试验，通过沙维诺夫法分级和焦磷酸钠-氢氧化钠提取法对华北地区不同春油菜翻压下土壤结合形态腐殖质、土壤团聚体粒径分布及稳定性等进行了研究。结果表明，与春闲对照相比，翻压不同春油菜品种可提高土壤各结合形态腐殖质、大团聚体含量，提高土壤松紧比、松稳比，提高> 5 mm粒径碳富集系数，提高团聚体对土壤有机质的贡献率。其中，土壤松结态腐殖质、稳结态腐殖质及紧结态腐殖质均以中油肥1901增加最多，比对照分别增加了138.61%，60.22%，67.44%；松紧比以中油肥1907提高最多，较对照提高43.94%；松稳比以中油肥1901提高最多，较对照提高49.43%。不同春油菜品种翻压后土壤大团聚体数量提高较多的是中油肥1901和中油肥1907，显著高于其他品种，>5 mm粒径碳富集系数以中油肥1901增加最多，土壤有机质贡献率也是中油肥1901最大。

关键词: 春油菜, 土壤团聚体, 腐殖质结合形态, 贡献率

Abstract: In order to increase the content of soil organic matter, improve the quality of organic matter, provide theoretical basis and data support for the rational development and utilization of green manure resources in North China. Field trials were used to study the combined forms of humus, soil aggregate particle size distribution and stability of different spring Brassica campestris L. soils in North China through Shavinov classification and sodium pyrophosphate-sodium hydroxide extraction method. The test results showed that Spring Brassica campestris L.could increase the content of humus in soil combination and large aggregates, and increase the soil loose compact ratio, loose stable ratio, improve >5 mm particle diameter carbon enrichment coefficient, contribution rate of aggregates to soil organic matter compared with spring leisure. Among them, Zhongyoufei 1901 increased the most in soil loose-bound humus, stable-bound humus, compacted humus, which increased by 138.61%, 60.22%, 67.44% compared with spring leisure;Loose compact ratio was the largest increased in Zhongyoufei 1907, which increased by 43.94% compared with spring leisure; Loose stable ratio was the largest increased in Zhongyoufei 1901, which increased by 49.43% compared with spring leisure. The large aggregates contents of different spring Brassica campestris L.varieties was increased more in Zhongyoufei 1901 and Zhongyoufei 1907, which were significantly higher than other varieties;The carbon enrichment coefficient of >5 mm particle diameter was increased the most by Zhongyoufei 1901, and the contribution rate of soil organic matter was also best by Zhongyoufei 1901.

Key words: Spring Brassica campestris L., Soil aggregate, Humus-binding morphology, Contribution rate

中图分类号:

袁苗苗, 赵秋, 田秀平, 史昕倩, 董家僖, 向春阳, 杜锦. 翻压春油菜对土壤团聚体及腐殖质结合形态的影响[J]. 华北农学报, 2021, 36(4): 147-154. doi: 10.7668/hbnxb.20192046.

YUAN Miaomiao, ZHAO Qiu, TIAN Xiuping, SHI Xinqian, DONG Jiaxi, XIANG Chunyang, DU Jin. Effects of Spring Brassica campestris L. Rolling on the Soil Aggregates and Humus Combined Form[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(4): 147-154. doi: 10.7668/hbnxb.20192046.

http://www.hbnxb.net/CN/Y2021/V36/I4/147

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