羧甲基纤维素钠对宽叶雀稗生长与固土能力的影响

Effects of Sodium Carboxymethyl Cellulose on the Growth and Soil Fixation Capacity of Paspalum Broadleaf

为了探究羧甲基纤维素钠(CMC)对宽叶雀稗生长和固土能力的影响,以南方地区常见的粉质黏土为研究对象,探究不同CMC含量对土的抗剪强度以及宽叶雀稗的生长高度、根系长度和固土能力的影响。试验结果表明,添加CMC会导致土颗粒聚集,从而使土中大颗粒比例增加,进而增加土壤的不均匀性。在CMC含量较低时,宽叶雀稗的发芽率、生长高度和根系长度达到最高值,随着CMC含量的增加而逐渐减小。在力学特性方面,土的抗剪强度随着CMC含量的增加而得到一定程度的提高,而CMC含量0.5%、1.5%、1.5%时宽野雀稗抗拉拔能力最好。施用少量的羧甲基纤维素钠(CMC)可促进宽叶雀稗的生长和固土能力,其含量为0.5%时为最优含量。

The effects of sodium carboxymethylcellulose(CMC)on the growth and soil fixation capacity of Paedus broadleaf were investigated,and the effects of different CMC contents on soil shear strength were investigated.Taking the common silty clay in southern China as the research object,the effects of different CMC contents on soil shear strength,growth height,root length and soil consolidation ability of Paula broadleaf were explored.The experimental results show that the addition of CMC will lead to the aggregation of soil particles,which will increase the proportion of large particles in the soil,which in turn will increase the inhomogeneity of the soil.At the same time,when the CMC content was low,the germination rate,growth height and root length of Paula broadleaf reached the highest values,and then gradually decreased with the increase of CMC content.In terms of engineering mechanical properties,the shear strength of soil increased to a certain extent with the increase of CMC content,and the plant had the best pulling ability when the CMC content was 0.5%,1.5%and 1.5%.The application of a small amount of sodium carboxymethylcellulose(CMC)can promote the growth and soil fixation capacity of Paula broadleaf,and its content is 0.5%as optimal.