新疆阿克苏绿洲区硼元素地球化学特征及施肥建议
Characteristics of Boron Element Geochemistry and Fertilization Suggestions in Aksu Oasis, Xinjiang

以1:25万土地质量地球化学调查数据为基础，对阿克苏河流域硼元素的含量、地球化学分布、异常特征进行了分析研究，结果表明：阿克苏地区硼元素最大值为144 mg/kg，最小值为18 mg/kg，大部分介于30~75 mg/kg，占所有样品数量的96.34%，平均含量为51.19 mg/kg，中值为50.49 mg/kg，标准差为10.51。以硼元素地球化学质量等级划分，研究区内一等丰富占7.74%，二等较丰富占24.63%，三等中等占42.11%，四等较缺乏占23.58%，五等缺乏占1.95%。土壤中硼含量多少与TC、有机质、TFe₂O₃、MgO、CaO、N、P含量呈正相关性，与SiO₂、Na₂O含量呈负相关性。硼元素地球化学特征结合研究区地质地貌特征，发现硼元素通常在耕地质量较好的土壤中含量相对丰富，而在戈壁区或新开垦的耕地中通常含量相对较低。硼元素含量与耕地土壤主要氧化物含量的相关性研究，可为后续耕地施硼肥提供参考建议。
Based on the investigation data of 1:250,000 land quality geochemistry, the content, geochemistry distribution and anomaly characteristics of Boron in the Aksu River River basin were analyzed, the maximum value is 144 mg/kg and the minimum value is 18 mg/kg, most of them are between 30~75 mg/kg, accounting for 96.34% of all samples, the average content is 51.19 mg/kg, the median value is 50.49 mg/kg, and the standard deviation is 10.51. According to the grade of Boron Geochemistry, the first grade is 7.74%, the second grade is 24.63%, the third grade is 42.11%, the fourth grade is 23.58%, and the fifth grade is 1.95%. The content of Boron in soil was positively correlated with TC, organic matter, TFe₂O₃, MgO, CaO, N, P, and negatively correlated with SiO₂ and Na₂O. It was found that Boron is generally abundant in the soil with good cultivated land quality, but it is relatively low in the Gobi area or newly cultivated land, according to the geochemistry and geomorphology of the study area. The study on the correlation between the content of Boron Element and the content of main oxides in cultivated soil could provide reference and suggestion for the following application of Boron fertilizer in cultivated land.