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四川盆地是一个古老的农业区,但其土壤中的微量元素,尚未曾作过专门研究。本文研究了四川盆地土壤中微量元素硼、锌、铜、锰、铁的含量分布状况和影响其有效性的某些因子。结果表明:各元素的总含量较高,但有效硼的含量很低,有效锌和锰的含量在多数土壤中亦较低,有效铜和铁的含量却较丰富。土壤中各微量元素的含量因土而异,其有效性受pH和有机质含量的影响,各有效态微量元素的含量均是pH<7的高,而pH>7则低,且与有机质含量呈显著正相关关系。水稻土中各有效态微量元素(除硼以外)的含量一般高于同母质发育的旱地。
The Sichuan Basin is an ancient agricultural area, but the trace elements in its soil have not been specially studied. In this paper, the content and distribution of trace elements boron, zinc, copper, manganese and iron in the soils of Sichuan Basin were studied and some factors influencing their effectiveness were studied. The results showed that the total content of the elements is high, but the content of available boron is very low. The content of available zinc and manganese is also lower in most soils, and the contents of available copper and iron are more abundant. The content of trace elements in soils varies with soil, and its effectiveness is affected by pH and organic matter content. The content of effective trace elements is high at pH <7, while pH> 7 is low, and the content of organic matter is Significant positive correlation. The content of available trace elements (except boron) in paddy soil is generally higher than that in dry land with parent development.