棕壤土为辽北地区主要农业土壤,约占总耕地面积的60％。这类土壤有机质平均含量只有1.584％,且有逐年下降的趋势,严重影响着土壤水、肥、气、热和生物等因素的协调,导致作物产量大幅度下降,已成为当前农业生产上急待解决的问题之一。为此,我们在沈阳农业大学土壤肥力研究室的指导下,于1981年开展了以棕壤土类为主的有机质矿化与培肥对 Brown soil is the main agricultural soil in northern Liaoning, accounting for about 60% of the total cultivated area. The average content of soil organic matter in this kind of soil is only 1.584%, and there is a trend of declining year by year, seriously affecting the coordination of soil water, fertilizer, gas, heat, biology and other factors, leading to a sharp drop in crop yield, which has become an urgent need for agricultural production One of the problems solved. Therefore, under the guidance of the Laboratory of Soil Fertility, Shenyang Agricultural University, we conducted a series of studies on the mineralization and fertilization of organic matter dominated by brown earth in 1981