小麦草生物炭修正案通过调节生理和生化反应,增加了柳幼苗的盐度应激耐受性
Shangzhi Zhong1,2, Pengxin Hou1,2, Congcong Zheng3,4
1College of Grassland Science, Qingdao Agricultural University, Qingdao 266109, China.
Plants (Basel, Switzerland)
|July 12, 2025
概括
小麦生物炭通过改善生理和生化反应,有效地减轻了的盐度压力. 一个25gkg-1的应用速率显著增强了盐受影响的土壤中草的生长和生物量.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 植物生理学 植物生理学
背景情况:
- 盐度压力严重限制了牧场的生产力和质量.
- 生物炭修正是抵消度压力效应的潜在策略.
- 在盐度下,小麦生物炭对的具体影响尚不清楚.
研究的目的:
- 研究盐度和小麦生物炭对的生理学,生物化学和生长的影响.
- 为了确定最佳的生物炭应用速率,以减轻性压力.
主要方法:
- 一个因数实验使用了五个盐度水平 (0-100 mM NaCl) 和三个生物碳率 (0-50 g kg-1).
- 评估的生理参数包括叶绿素光,光合作用率和氧化应激标志物.
- 评估生物化学反应,如透调节物质和抗氧化酶活动.
主要成果:
- 盐度应激增加了氧化应激 (H2O2,MDA) 并降低了叶绿素光和生物质 (高达77%).
- 在高盐度下,小麦生物炭 (25 g kg-1) 显著降低了氧化应激标志物和抗氧化酶活性.
- 生物炭的应用恢复了proline和可溶糖的水平,增加了CO2的吸收率98%,并增加了63%的生物质.
结论:
- 小麦生物炭通过调节生理和生化途径,有效地保护草免受盐度压力.
- 应用率为25gkg−1小麦生物炭的应用率在提高的生产率方面表现最佳.
- 生物炭修正案是一个可行的策略,用于增强在盐受影响的农业土壤中种植.
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