KMS Institute of Mountain Hazards and Environment,CAS
|Alternative Title||INVESTIGATIONS ON THE CONTENT, DISTRIBUTION AND AVAILABILITY OF TRACE ELEMENTS IN THE SOILS OF SICHUAN BASIN|
|杨定国; 成延鏊; 温琰茂; 金爱珍|
|Other Abstract||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。 更多还原|
; The main soil types in Sichuan Basin are paddy soil, purplish soil, yellow earth, yellow brown earth and brown earth. The soil samples of more than 620 sites were analyzed. The main results are summarized as follows: 1. The range and mean value of the total contents of Zn, B, Cu and Mn in the soils of Sichuan Basin are 37—400 ppm with an average of 112.8 ppm, 17—370 ppm with an average of 80.7 ppm, 9—125 ppm with an average of 33.0 ppm, and 41—1750 ppm with an average of 641 ppm respectively. It is obvious that the total contents of B, Zn Cu in the soils of this region are higher than those in the soils of other regions in China. However, total content of Mn is lower than that in the soils of other regions in China. 2. The content of available trace elements varied greatly. The range and mean value of available B, Zn, Cu, Mn and Fe in the soils of Sichuan Basin are 0.01—1.61 ppm with an average of 0.23 ppm, 0.08—9.60ppm with an average of 1.45 ppm, 0.1—9.44ppm with an average of 2.53 ppm, 0.18—262.4ppm with an average of 27.8 ppm, and 0.86—401.4 ppm with an average of 61.1 ppm respectively. The content of available B in the soils of Sichuan Basin is very low (0.16—0.29 ppm), being much more below the critical value (0.5 ppm). Although the average contents of available Zn and Mn are slightly higher, but in the most of soils, especially the calcareous purplish soil, they are lower than the critical values. The contents of available Cu and Fe in the soils of Sichuan Basin are higher.The availability of trace elements in soils are influenced by many factors. The available trace element contents in the soils of Sichuan Basin are often varied with the soil types, increased with the lowing of soil pH and increasing of organic materials. At same time. the content of available trace elements (except B) in the paddy soil are higher than that in the upland soil derived from the same parent material.
|Keyword||中微量元素 土壤微量元素 有效态微量元素 含量分布 中性紫色土 有机质含量 分布状况 土壤类型 黄泥土 有效态铁|
|杨定国,成延鏊,温琰茂,等. 四川盆地土壤中微量元素的含量分布及其有效性的研究[J]. 土壤学报,1985,22(2):157-166.|
|MLA||杨定国,et al."四川盆地土壤中微量元素的含量分布及其有效性的研究".土壤学报 22.2(1985):157-166.|
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