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应用生态学报 ›› 2022, Vol. 33 ›› Issue (4): 1069-1073.doi: 10.13287/j.1001-9332.202204.005

• 研究论文 • 上一篇    下一篇

生物质炭施用量对大豆农艺性状和营养物质含量的影响

刘建萍1, 龙莹1, 李晓红1,2*   

  1. 1邵阳学院食品与化学工程学院, 湖南邵阳 422000;
    2邵阳学院城乡建设学院, 湖南邵阳 422000
  • 收稿日期:2021-07-10 接受日期:2022-01-27 出版日期:2022-04-15 发布日期:2022-05-07
  • 通讯作者: * E-mail: xiaohongli86@126.com
  • 作者简介:刘建萍, 女, 1995年生, 硕士研究生。主要从事土壤-大豆反馈生态效应研究。E-mail: 948671856@qq.com
  • 基金资助:
    湖南省教育厅科学研究优秀青年项目(19B513)、国家自然科学基金项目(31800317)和邵阳学院研究生科研创新项目(CX2019SY035)资助。

Effects of the amount of biochar application on agronomic traits and nutrient content of soybean

LIU Jian-ping1, LONG Ying1, LI Xiao-hong1,2*   

  1. 1College of Food and Chemical Engineering, Shaoyang University, Shao-yang 422000, Hunan, China;
    2College of Urban and Rural Construction, Shaoyang University, Shaoyang 422000, Hunan, China
  • Received:2021-07-10 Accepted:2022-01-27 Online:2022-04-15 Published:2022-05-07

摘要: 以大豆品种‘徐豆18'为对象,于2020年5月在邵阳学院试验基地设0(CK)、5、10、20和40 g·kg-1土壤添加生物质炭处理,分析盆栽大豆的生长发育、农艺性状和营养含量。结果表明: 与CK相比,施用生物质炭对大豆的生育期、株高、单株有效荚数、百粒重、叶片干重、茎秆干重和大豆籽粒中蛋白质、粗脂肪、异黄酮含量均具有显著影响。施用量为20 g·kg-1时,大豆的发芽率最高,生育期最短,单株有效荚数最多,百粒重最大,籽粒中蛋白质、粗脂肪和异黄酮含量最高。生物质炭施用量为40 g·kg-1时,大豆株高较高且贪青晚熟,单株有效荚数和百粒重比施用量为20 g·kg-1时降低。综上,土壤添加生物质炭对大豆农艺性状和营养含量的影响因施用量不同而异,其中20 g·kg-1为本试验条件下的最佳施用量。

关键词: 生物质炭, 大豆, 产量, 农艺性状, 营养含量

Abstract: A pot experiment was conducted at the Shaoyang University test base in May 2020, with Xudou 18 as the research object. We investigated the growth and development as well as the agronomic traits and nutrient content across a gradient of 0 (CK), 5, 10, 20, and 40 g·kg-1 of biochar addition. The results showed that compared with CK, the biochar application significantly affected growth dynamic, plant height, number of effective pods per plant, 100-grain weight, and leaf and stem dry weights of soybean plants, and the contents of protein, crude fat and isoflavone in soybean seeds. At the application rate of 20 g·kg-1, the germination rate of soybean was the highest, the growth period was the shortest, the number of effective pods per plant was the highest, the 100-grain weight was the largest, and the contents of protein, crude fat, and isoflavone were the highest in the seeds. When biochar application reached 40 g·kg-1, the plant height of soybean was the highest with extended vegetative growth and delayed maturity, whereas the effective pods per plant and 100-grain weight was reduced compared to that with 20 g·kg-1 application. In conclusion, the effects of biochar addition on agronomic traits and nutrient content of soybean varied with application amount, with 20 g·kg-1 being the optimal under the test condition.

Key words: biochar, soybean, yield, agronomic trait, nutrient content