Ecological Characteristics And Effect Of Artificial Apocynum In Wind-sand Land Of Northwest Liaoning Province

In order to improve the conditions of the northwestern Liaoning sandy land,change the traditional aeolian sands to plant plants,and promote the development of the apocynum venetum industry,we introduced Apocynum venetum and Dahua white hemp from northwest China,and carried out the same planting density and the same number of fertilization times.Study on survival rate,growth and yield of Apocynum venetum.The growth indexes(plant height,crown width,number of branches,biomass)of the tested plants,as well as the total root length,total root surface area,total root volume,total branch number,average root diameter under the same planting density and the same number of fertilization times Compared.The soil properties of two Apocynum venetum(soil bulk density,soil porosity,soil infiltration)and the root tensile properties between the two Apocynum venetum were determined.The results showed that Apocynum venetum and A.huaca introduced into the sandy land in northwestern Liaoning could grow,and the above-ground biomass of Apocynum venetum was greater than that of A.huabana.The planting density had different effects on the growth indexes of Apocynum venetum and A.chinensis,among which the density was small and the crown width was large.The planting density is high,and the aboveground biomass of Apocynum venetum and A.chinensis is high.Different fertilization methods were not obvious for the growth indexes of Apocynum venetum and A.alba.The effects of Apocynum venetum and Dahua Baima with different densities and different fertilization times on the soil bulk density and porosity of the experimental field are almost the same.The differences in stable infiltration rate between 0-10 cm and 10-20 cm soil layers of Apocynum venetum and Dahua Baima are also not significant.In the study of the root tensile strength of different density and fertilization methods,there was no significant difference in the root tensile strength test of Apocynum venetum and Dahua Baima,which indicated that the different density and different fertilization methods were maintained when planting Apocynum venetum and Dahua Baima.There is no difference in the overall stability of the soil.The root diameter of Apocynum venetum and Dahua white hemp has a linear relationship with the tensile force,and it has a power function relationship with the tensile strength.