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中国农学通报

中国农学通报 ›› 2024, Vol. 40 ›› Issue (22): 88-93.doi: 10.11924/j.issn.1000-6850.casb2023-0869

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

施氮对甜菜根际土壤化学性质的影响及相关性分析

王望(), 于泽, 崔晶晶, 宋柏权, 王秋红()   

  1. 黑龙江大学现代农业与生态学院，哈尔滨 150080
  • 收稿日期:2023-12-08 修回日期:2024-06-29 出版日期:2024-07-28 发布日期:2024-07-28
  • 通讯作者:
    王秋红，女，1972年出生，河北定县人，副研究员，博士，主要从事植物发育与营养调控方面的研究。通信地址：150080 黑龙江省哈尔滨市南岗区学府路74号 黑龙江大学现代农业与生态环境学院，Tel：0451-86609405，E-mail：。
  • 作者简介:

    王望，女，1999年出生，浙江台州人，硕士研究生，研究方向：植物发育与营养调控方面的研究。通信地址：150080 黑龙江省哈尔滨市南岗区学府路74号 黑龙江大学现代农业与生态环境学院，E-mail：。

  • 基金资助:
    财政部和农业农村部国家现代农业产业技术体系“甜菜养分管理与土壤肥料岗位”(CARS-170204)

Effect of Nitrogen Application on Chemical Properties of Sugar Beet Rhizosphere Soil and Correlation Analysis

WANG Wang(), YU Ze, CUI Jingjing, SONG Baiquan, WANG Qiuhong()   

  1. School of Modern Agriculture and Ecology, Heilongjiang University, Harbin 150080
  • Received:2023-12-08 Revised:2024-06-29 Published:2024-07-28 Online:2024-07-28

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摘要：

氮肥施入直接影响土壤的肥力和理化性质，施氮过多会造成氮肥利用效率偏低和环境污染等问题。本研究旨在探讨施氮对不同氮效率甜菜品种根际土壤化学性质的影响及其相关性，为农业生产中科学栽培、合理施氮提供参考。以氮高效甜菜品种‘H004’和氮低效甜菜品种‘HI0466’为试验材料开展田间试验，设置不施氮N0 (0 kg/hm2)和正常施氮N120(120 kg/hm2)2个处理，对根际土壤pH、有机质、速效磷、速效钾、碱解氮等主要化学性质在甜菜不同发育阶段的变化特征进行统计分析，挖掘它们之间的互作关系。结果表明，与不施氮相比，施氮条件下氮高效品种‘H004’根际土壤pH、有机质和碱解氮含量分别增加了2.64%、2.49%、0.42%，速效磷和速效钾含量分别降低了12.10%、17.22%；氮低效品种‘HI0466’根际土壤有机质、速效磷和速效钾含量分别增加了5.99%、5.60%、47.63%，pH和碱解氮含量分别降低了0.14%、3.68%。Pearson相关性分析结果显示，不施氮条件下2个品种根际土壤pH与有机质含量之间均呈显著负相关，速效钾与碱解氮含量之间均呈显著负相关。在施氮条件下，氮高效品种根际土壤速效磷与有机质含量呈显著负相关，与速效钾呈显著正相关；氮低效品种根际土壤有机质与碱解氮含量呈显著正相关。

关键词: 甜菜, 根际土壤, 土壤化学性质, 氮肥, 相关性分析

Abstract:

The application of nitrogen fertilizer directly affects soil fertility and physical and chemical properties. Excessive application of nitrogen will lead to low nitrogen use efficiency and pollution. In this study, the main chemical properties of beet rhizosphere soil and their correlation were studied to provide reference for scientific cultivation and rational nitrogen application in agricultural production. A field experiment was conducted with a sugar beet variety ‘H004’ with high nitrogen efficiency and ‘HI0466’ with low nitrogen efficiency. Two treatments, N0 (N: 0 kg/hm2) and N120 (N: 120 kg/hm2), were used to study the changes of soil pH, organic matter, available phosphorus, available potash, alkali-hydrolyzable nitrogen and other major chemical properties in the rhizosphere of sugar beet at different developmental stages. The results showed that the contents of pH, organic matter and alkali-hydrolyzable nitrogen in rhizosphere soil of ‘H004’ under nitrogen application were 2.64%, 2.49%, 0.42%, respectively, and the contents of available phosphorus and available potassium were 12.10%, 17.22%, respectively; the content of organic matter, available phosphorus and potassium in rhizosphere soil of ‘HI0466’ was 5.99%, 5.60%, 47.63%, respectively, and the content of pH and alkali-hydrolyzable nitrogen were 0.14% and 3.68%, respectively. Pearson correlation results showed that there was a significant negative correlation between pH and organic matter content in rhizosphere soil of the two cultivars under no nitrogen application; there was also a significant negative correlation between available potassium and alkali-hydrolyzable nitrogen content under the condition of nitrogen application, the content of available phosphorus and organic matter in rhizosphere soil of nitrogen-efficient varieties was significantly negatively correlated, while that of available potassium was significantly positively correlated; there was a significant positive correlation between organic matter and alkali-hydrolyzable nitrogen content in rhizosphere soil of nitrogen inefficient varieties. Nitrogen application had different effects on nutrient content in rhizosphere soil of beet varieties with different nitrogen efficiency, and the high nitrogen efficiency varieties were more suitable for non-nitrogen application than low nitrogen efficiency varieties.

Key words: beets, rhizosphere soil, soil chemical properties, nitrogen fertilizer, correlation analysis