Distribution of Exchangeable Ca and Mg in the Soil Environment of Yunnan Plateau

摘要

Ca and Mg in soil are essential nutrient elements for plants, and their exchangeable state is mainly effective. This paper studied the characteristic of statistics, distribution and exchangeable Ca/Mg for Chinese herbs plantation base soil of Yunnan Baiyao Group Co.LTD. The results of 214 soil samplings data show that 93.55% soil samplings of exchangeable Ca content were above 800 mg/kg, so the Baiyao base soil was rich in Ca element. 79.44% of the samples were seriously potential Mg deficiency. The moderate exchangeable Ca/Mg (between 5 and 10) accounts for 41.1%. Baiyao base soil with higher exchangeable Ca and Mg mainly distributed in southwest and north parts, and exchangeable Mg content in the southeast corner was also higher.