水泥对红壤pH值及植物生长影响的试验研究

Experimental Study on the Effect of Cement on the pH Value of Red Soil and Plant Growth

中国南方地区广泛分布的酸性红壤严重影响植物的正常生长。针对此问题,以水泥掺量为0.1%、1%、2%、3%、4%的红壤为研究对象,开展了水泥对红壤pH值影响试验和盆栽种植试验。水泥对红壤pH值影响试验结果表明:红壤pH值随着水泥掺量的增加而增加,并随养护时间增加,pH值不断减小。养护28 d后,水泥掺量每增加1%,红壤pH值增加0.75。盆栽种植试验研究表明:当水泥掺量为0.1%时,狗牙根发芽率和生长高度表现最好,随着水泥掺量的增加,狗牙根发芽率降低,生长高度不断减小。水泥掺量每增加1%,狗牙根发芽率减少12.63%,狗牙根生长高度排序为:0.1%>1%>2%>3%>4%。

The acid red soil widely distributed in southern China seriously affects the normal growth of plants.In response to this problem,the red soil with a cement content of 0.1%,1%,2%,3%,and 4%was used as the research object,and experiments on the effect of cement on the pH value of red soil and pot planting experiments were carried out.The test results of the effect of cement on the pH value of red soil showed that the pH value of red soil increased with the increase of cement content,and with the increase of curing time,the pH value continued to decrease.After 28 days of curing,for every 1%increase in cement content,the pH of the red soil increases by 0.75.Potted planting experiments showed that when the cement content was 0.1%,the germination rate and growth height of bermudagrass performed best.With the increase of cement content,the germination rate and growth height of bermudagrass decreased continuously.For every 1%increase in cement content,the germination rate of bermudagrass decreased by 12.63%.The growth height of bermudagrass was ranked as follows:0.1%>1%>2%>3%>4%.