河北省土壤锰的含量与分布

河北省土壤全锰平均值569ppm,低于全国和世界平均值.对5,253个土壤样本用DTPA提取的有效锰平均5.8ppm.全省73.7%的样本,79.8%的耕地有效锰低于临界缺乏值(7ppm).这预示施用锰肥有着巨大的增产潜力.本文讨论了成土母质、土壤质地、碳酸钙、pH、有机质和土壤湿度等对土壤锰含量和消长的影响以及它们之间的统计学关系.

CONTENT AND DISTRIBUTION OF MANGANESE IN SOILS OF HEBEI

The mean value of total Mn in the soils of Hebei province is 569 ppm, lower than that of the whole China or the world.The contents of available manganese of the 5253 samples are averaged 5.8 ppm (extracted by DTPA). 73.7 percent of these samples representing 79.8 percent of the total cultivated land of Hebei have available manganese value lower than the deficient critical value ( 7 PPm ).This predicates that the utilizatoin of Mn-fertilizer has a great potentiality to increase the out-puts, of these soils.This paper has discussed the influence of soils parent material, texture, CaCO3.pH, moisture, organic matter, etc. on the content of Manganese in the soils and it's growth-decline. Meanwhile discussed the statistical relationship among them.