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[东三江平原土壤和作物含量的特征和影响因素]

Jing-Jie Li¹, Tao Yang¹, Ming-Guo Wang¹

¹Center for Hydrogeology and Environmental Geology Survey, China Geological Survey, Baoding 071051, China.

Huan jing ke xue= Huanjing kexue

|October 25, 2024

概括

(Se) 在利农场土壤中富含,可氧化Se是主要形式. 土壤有机物和离子交换能力对Se含量产生积极影响,而pH则对其产生负面影响,影响作物吸收.

科学领域:

环境科学环境科学
土壤科学土壤科学
农业化学农业化学

背景情况:

了解农业土壤中的 (Se) 分布和影响因素对于作物营养和环境健康至关重要.
桑江平原是一个重要的农业地区,土壤特性可能会显著影响的生物可用性.

研究的目的:

确定含量特征和影响农场土壤和作物的因素.
分析土壤物理化学特性与积累之间的关系.
为了研究土壤和作物含量之间的相关性.

主要方法:

对83个表面土壤样本和34个作物种子样本进行了全面的统计和相关性分析.
测量了土壤的物理化学指数,包括pH值,阴离子交换能力 (CEC),土壤有机物质 (SOM),湿土 (HS),总 (TN) 和总 (TP).
分析了分数 (可氧化和可还原) 和总 (T-Se).

主要成果:

土壤中的含量在0.12至0.95毫克·公斤-1之间,平均值为0.37毫克·公斤-1和高缩系数 (3.18).
可氧化Se是占主导地位的部分 (约. 80%),而可降解的Se是最小的 (<5%).
含量与CEC,SOM,HS,TN和TP有显著的正相关性,与pH和总 (TK) 有负相关性. 干旱地的土壤呈现出较高的Se积累.
来自湖泊沉积物 (富含有机物) 的格莱索尔和土壤平均含有Se的含量最高.
农作物Se含量与根土Se负相关,表明在低pH或高SOM土壤中吸收减少. 可用Se与作物Se正相关,而可氧化Se显示出负相关性.

结论:

利农场的土壤富含,主要以可氧化的形式,受土壤有机物和物理化学性质的影响.
在某些土壤条件下 (低pH,高SOM),作物的生物可用性是有限的,并且取决于的物种化.
建议减少人工肥料在耕地上的应用,以提高的生物可用性和提高作物含量.

关键词:

桑江平原是一个平原.收获 Se Se 的收获土地使用情况土地使用情况婴儿产生的母体物质是婴儿产生的母体物质.物理和化学特性.这是一个土壤,土壤是土壤.土壤类型土壤类型

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