采集了巴楚县域农田土壤样品300份，并对其进行有效铁、有效锰、有效铜、有效锌含量测定，以明确土壤中微量元素的含量，探索土壤微量元素结构特征以及成因，为巴楚县耕地土壤微量元素管理提供理论参考。结果表明，巴楚县域农田土壤有效铁含量为4.51~20.00 mg/kg，平均为12.37 mg/kg，其中含铁量丰富的占67.4%，中等的占32.6%；有效锰含量为1.01~9.97 mg/kg，平均为5.26 mg/kg，其中含锰量中等的占56.0%、缺乏的占44.0%；有效铜含量为1.00~6.00 mg/kg，平均为3.39 mg/kg，其中含铜量极丰富的占77.3%、丰富的占19.0%、中等的占3.7%；有效锌含量为0.50 ~2.00 mg/kg，平均为1.19 mg/kg，其中含锌量丰富的占57.6%、中等的占35.6%、缺乏的占6.8%。巴楚县域农田土壤中的微量元素含量为有效铁>有效锰>有效铜>有效锌。综合考察各农田区域土壤微量元素含量，恰尔巴格乡的综合评价得分最高，表现较好。建议在作物栽培过程中，应充分考虑不同乡镇的土壤微量元素含量，适当补充微量元素，以达提质增效之目的。

A total of 300 farmland soil samples were collected from Bachu County, and their contents of available iron, manganese, copper, and zinc were determined to clarify the trace element contents in the soil. This study aimed to explore the structural characteristics and origins of soil microelements, providing theoretical references for microelement management in the farmland soils of Bachu County. The results showed that the available iron content ranged from 4.51 to 20.00 mg/kg, with an average of 12.37 mg/kg, 67.4% of the soils being rich in iron and 32.6% having moderate levels. The available manganese content ranged from 1.01 to 9.97 mg/kg, with an average of 5.26 mg/kg, 56.0% of the soils having moderate levels and 44.0% being deficient. The available copper content ranged from 1.00 to 6.00 mg/kg, with an average of 3.39 mg/kg, 77.3% of the soils being extremely rich, 19.0% rich, and 3.7% having moderate levels. The available zinc content ranged from 0.50 to 2.00 mg/kg, with an average of 1.19 mg/kg, 57.6% of the soils being rich, 35.6% moderate, and 6.8% deficient. The trace element contents in Bachu County's farmland soils were in the order of available iron > available manganese > available copper > available zinc. Among the various farmland regions, Qiaerbage Township had the highest comprehensive evaluation score and performed the best. It is recommended that crop cultivation processes should consider the soil trace element contents of different townships and appropriately supplement trace elements to achieve quality and efficiency improvements.

S158.2

兵团重大科技项目(NYHXGG,2023AA308)；塔里木大学校长基金创新团队项目(TDZKCX202301)。