On the basis of the existing information,the present article makes an approach to K-bearing property of the marine Triassic and search for potash salt in Sichuan basin.

In the vicinity of Zunyi city, there occur potassium-bearing rocks of steady productive layer, good quality ores, widespread distribution, and rich amount of resource.

On basis of analysis of regional geology in the southern part of Shaanxi and distribution of potassium bearing rocks in the study areas, preliminary conclusion has been come that the rocks are all located around margins of a platform or a geosyncline, probably grouped into four types: detrital rock, volcanic lava, syenite and pegmatite.

The Dajinshan potassium bearing rock deposits is situated in the eastern end of the southern margin of North China Platform,the potassium bearing stratum preserves in the Ruyang Group of middle Proterozoic.

Discussion on the determination methods of potassium content in potash fertilizer;

Annual change of potassium content and accumulation in apple tree;

Related techniques for improving potassium content of tobacco leaves;