Study On Formulation Of Spraying Greening Wood Fiber Matrix Material

The construction of slope vegetation,such as industrial and mining roads,has become one of the difficult sites and hot spots of vegetation construction at present,and spray planting greening is one of the important vegetation construction methods of this site condition type.The development and research of spray sowing matrix material is the basis and important technical link of spray sowing greening.At present,there are many wood waste materials formed by garden pruning in cities and fruit areas,which are easy to cause pollution and waste of resources.In order to make rational use of wood waste materials and develop and study degradable and pollution-free steep slope greening spray sowing matrix materials,wood materials were used as basic raw materials in this study.On the basis of degradation experiment of wood material by using microorganism and selection of plant germination test,sodium salt of caboxy methyl cellulose was used as binder,sodium bentonite was used as stabilizer,Span 80 was used as lubricant and super absorbent resin was used as water retention agent to prepare fiber matrix,the formula of greening spray sowing substrate material was screened by orthogonal test.The formulation and preparation method of greenwood fiber matrix material for the purpose of improving vegetation growth and vegetation coverage were studied.(1)The fiber matrix of different formula is beneficial to improve soil bulk density,porosity and soil moisture constant,and the amount of different materials has an effect on soil properties.Among them,the amount of sodium caboxy methyl cellulose had a significant effect on soil capillary porosity and capillary water holding capacity.(2)The fiber matrix of different formula is beneficial to the growth of plant,and the amount of different material has different effect on plant characteristics,and the dosage of sodium caboxy methyl cellulose and Span have significant effect on plant coverage.The amount of water retaining agent has a significant effect on vegetation coverage and plant height.(3)Through the comprehensive queuing scoring method,the comprehensive weighted scoring method and the comprehensive balance method,the results show that the optimum matrix material formula is A1B5C5D5,that is,when the fiber content is 95%,the amount of sodium salt of caboxy methyl cellulose is 1.25%,the amount of sodium bentonite dosage is 2.25%,the amount of span is 1.25%and the amount of water-retaining agent is 2.5%,the soil properties were better and the effect of plant growth was the best.