河南省土壤微量元素含量分布及在农业上的应用

通过对河南省1165个土壤样品的测定分析,查明了全省土壤中微量元素硼、钼、锌、铜、锰的含量与分布,其全量均低于我国土壤的平均含量。与世界土壤平均含量比较,有高有低。有效态硼、钼普遍缺乏。锌的含量从全省范围看,仍属低水平。河南土壤微量元素的地理分布趋势是由母质、气候、地形等成土条件及成土过程决定的。微肥对不同作物的增产说明在河南省使用微肥具有一定的增产潜力,是一项很有前途的经济施肥措施。

DESTRIBUTION AND FERTILIZER EFFICIENCY OF THE TRACE ELEMENTS IN SOILS OF HENAN

The contents of trace elements in soils of Henan Province are lower than the average values in soils of China. Owing to diverse parent materials and soil types, the contents of trace elements in the soil fluctuate greatly. The soils are mostly deficient in available B and available Mo. However, the Zn content which belon ges to lower level as compared with other regions varies with different parent materials and soil foaming conditions.The distribution of trace elements in profile varies with elements and soil types, soil pH value is the most important factors affeecting the available availability of trace elements in soil. Available Zn and NIn contents in soil decreases with the increase of pH value, while Mo trends in the contrary way.