脱硫石膏改良轻度碱化土壤对燕麦生长的影响研究

Research on the Effect of Oat Growth by Using Desulfurized Gypsum and Mildly Improving Alkaline Soil

本文通过盆栽试验的方法,研究脱硫石膏对轻度碱化土壤的改良效果及对作物生长的影响.结果表明:施用脱硫石膏处理的土壤pH值与原始土壤的对照相比有明显降低,平均降低0. 92个单位,取得了较好的治碱效果;结合土壤理化性质和收割期燕麦的各项生长数据指标分析可知,在轻度碱化土壤上脱硫石膏施用量为15 000 kg/hm^2时,燕麦的各项生长指标达到理想状态,土壤pH值降低至植物生长的限制要求以内,EC值的增加幅度较小.

By the pot experiment,this paper discusses the effect of plant growth by using desulfurized gypsum and mildly improving alkaline soil.The results showed that,it has the clear decrease of pH value between the soil using desulfurized gypsum and the original one,the average value decrease by 0.92 units,and get the better alkali treatment effect.Combined soil physical and chemical properties with harvest oats,various growth data indexes show that,on the mildly alkaline soil,when the using amount of desulfurized gypsum was 15 000 kg/hm 2,various growth data indexes of oat arrive at a ideal state,the soil’s pH value decrease within the limitation of plant growth requirement,range of increase of EC Value is small.