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我们在1978～1979年,就上海土壤中的锌、硼、钼、钴,锰、铜、铁等微量营养元素的含量、分布及有效性问题,作了初步研究.在此基础上,对锌、硼、钼、钴等元素的有效含量作了区划,并绘制成分布图.这里仅就土壤中钼、钴的含量分布概况作一介绍。上海土壤中全钼含量范围在0.41～1.99ppm,平均值为0.75ppm,低于我国土壤的平均含钼量(1.7ppm);也低于世界土壤的平均含钼量(1～2pp-m、2ppm、2.5ppm、3ppm)。全钴含量范围为10.5～27.5ppm,平均含量是19.4ppm,接近或稍高于我国一些地区的平均含量(21ppm、15ppm)。在上海各类土壤中,全钴含量差异不大,平均值在18～21
We conducted a preliminary study on the content, distribution and availability of micronutrients such as zinc, boron, molybdenum, cobalt, manganese, copper and iron in Shanghai soil from 1978 to 1979. On the basis of this, , Boron, molybdenum, cobalt and other elements of the effective content of the division and draw the composition map here only on the content of molybdenum and cobalt in the soil profile to make an overview. The content of total molybdenum in Shanghai soils ranged from 0.41 to 1.99ppm with an average of 0.75ppm, lower than the average content of molybdenum (1.7ppm) in China’s soils. It was also lower than the average content of molybdenum in the world soils (1-2pp-m, 2ppm, 2.5ppm, 3ppm). Total cobalt content range 10.5 ~ 27.5ppm, the average content is 19.4ppm, close to or slightly higher than the average content of some areas in our country (21ppm, 15ppm). In all kinds of soils in Shanghai, there is not much difference in total cobalt content, with an average of 18-21