灌配额对草分解,释放和玉米气吸收的影响
Lihua Zhang1, Chen Xu1, Weiping Yan1
1Institute of Agricultural Resources and Environment Research, Jilin Academy of Agricultural Science/Northeast Agricultural Research Center of China, Changchun, 130033, China.
Scientific reports
|February 20, 2025
概括
优化灌是玉米的分解和营养释放的关键. 350毫米的水配额 (I 350) 在半干旱条件下改善了草分解,释放,玉米产量和用水效率.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 农业学是一种农业学.
背景情况:
- 将玉米草返回田地可以提高土壤的肥力,但面临着缓慢分解和营养释放的挑战.
- 有效的水资源管理对于优化草回收效益至关重要.
研究的目的:
- 为了确定最佳的土壤水分管理,以促进玉米的分解和释放.
- 评估灌对玉米产量和用回报的用水效率的影响.
- 为半干旱地区提供可持续农业的见解.
主要方法:
- 在一个可移动的雨棚下进行了为期两年的实地研究.
- 应用了三种灌配额 (200mm,350mm,500mm) 和两种草回收处理 (草回收和控制).
- 测量了玉米产量,草分解率,释放,植物吸收和用水效率.
主要成果:
- 与其他处理方法相比,350毫米灌配额 (I 350) 显著提高了草分解和释放率.
- 玉米产量和植物吸收量在I 350和I 500年是相似的,两者都超过I 200.
- 在I 350下,用水效率最高,超过I 500.
结论:
- 350mm的灌配额是平衡草分解,释放,玉米产量和用水效率的最佳选择.
- 草回收对的吸收产生补偿作用,特别是在较低的灌水平下.
- 这些发现为半干旱地区的土壤水分管理提供了理论基础,这些地区采用了草回收实践.
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