为探讨沼泽土扣大垅后的肥力变化,研究沼泽地排水改造的效果,我们在永翠林场79林班,选择一处机械化排水直接扣大垅的沼泽试验地,进行了定位研究。该地海拔240米,属于河漫滩低位沼泽,土壤为泥炭沼泽土和腐殖质泥炭沼泽土复区,地被植物是无脉苔草——小叶樟,平均每平方米有2.8个塔头,地面比降5—0.8%,泥炭层厚30—80厘米。1964年进行排水扣垅,1966年在大垅上营造兴安落叶松,现已成林。经分析测定,其土壤理化性状发生了以下变化: In order to study the changes of fertility after swamp soil buckwheat, and to study the effect of wetland drainage renovation, we selected a mechanized drainage directly buckwheat test site to carry out the positioning research. The ground is 240 meters above sea level, belonging to the lower marsh flood plains, the soil is peat swamp soil and humus peat swamp soil complex, the ground cover plants are Phlebotomus - small leaf camphor, with an average of 2.8 towers per square meter, 5-0.8%, peat thickness 30-80 cm. Drainage deduction in 1964, in 1966 to build larch in the big larch, has now become a forest. After analysis and determination, the soil physical and chemical properties of the following changes occurred: