Study On Plant Selection And Adaptability Of Plants To Soil On Restoration In Open Pit Coal Mine Waste Dump

Coal resources are an important economic energy source in our country,and the Inner Mongolia Autonomous Region,as a large province of coal reserves,is an important energy security base in our country.Coal resources in Inner Mongolia are mostly distributed in arid and semi-arid prairie areas and are dominated by open air extraction.Extensive open air extraction has a highly negative impact on vulnerable grassland ecology.The ditching sites,which are built up after open air extraction,not only form new bare landscapes,but also cause large-scale pollution of the surrounding area environment.Therefore,ecological restoration of the soil exclusion site becomes an urgent task in the conservation and sustainable use of grassland environments and resources in Inner Mongolia.In soil drained ecological restoration,soil improvement and suitable plant species selection are core tasks,the goals of which are to provide suitable standing conditions for plant establishment and colonization and to screen out plant species or plant combinations that are compatible with soil conditions.In accordance with such a goal,soil plant interaction indoor simulation tests were carried out to treat soiling field soils in several ways and observe their growth and adaptation status through potting route with mono and miscarriage.Eight treatments were used in this experiment(1:1 homogeneous mixture of the former and the overlying layers;5cm for the former and 10 cm for the overlying layer;Supplemented with sheep manure,commercial organic manure,humic acid,and microbial fungicides,respectively).The suitability of different soil treatment measures and different plants was judged.The trials were conducted in a completely randomized block design with three replications and determined by the routine method and included plants with arbors,(Elm trees),shrubs(Caragana CITRA),one and two-year old herbs(Canola,Oat,Wheat,Luteolina Lutea),perennial herbs(Toguchi,Medicago sativa,and Trifolium Caucasus),representing the types of plants occurring in community succession.The main results are as follows:The addition of meconium to the pre-existing soil effectively increased the emergence rate in Bush monoculture,mixing of various types of plants,and the survival rate in meconium measures when all types of plants were mixed;10cm of the upper covering of the present soil showed better plant emergence and survival rates both in the case of trees and shrubs,in the case of annual and in the case of perennial and in the case of Bush,annual and perennial herb mix;The addition of microbial fungicides to the pre sent soil increased the rate of tree emergence at monoculture;The addition of sheep manure to the pre-existing soil significantly increased elm,Caragana koreana,Brassica napus,Wheat,toguchi,Perennial ryegrass,Medicago sativa and Clover height in Caucasus.When sown alone,Elm,Caragana Caragana,Canola,Wheat,Toga,Perennial ryegrass,Medicago sativa,and Trileae caucasians had the highest height of 11.22 cm,14.44 cm,24.56 cm,24.11 cm,19.67 cm,20.56 cm,5.89 cm,and 4.67 cm when spiked with sheep manure;Oat was up to 40.89 cm when organic manure was added;In the short term,the effect of different soil measures on the above ground biomass of plants was insignificant,with a slight increase in plant biomass when 10 cm of meconium and overlays were added;The different soil measures had different effects on soil p H,organic matter,alkalolytic nitrogen,fast acting phosphorus,and fast acting potassium.The p H values increased when different proportions of soil cover were added and decreased when different fertilizers were added;In the same sowing mode,the addition of meconium treatment increased soil organic matter,alkaline hydrolysis nitrogen,fast acting phosphorus,and fast acting potassium.When plants were monocultured,annual herb emergence was higher than for tree,shrub,and perennial herb plants;When plants were mixed,emergence rates were higher among tree,annual and perennial herbs than among shrubs,annual and perennial herbs and all types of plants;When sown,Elms were highest at 8.00 cm height when sown with meconium addition and arborous,annual,perennial herbaceous species;Caragana korshinskii had the highest height of 12.56 cm when mixed with tree,shrub,annual,perennial herb plants when humic acid was added;Canola,Wheat,Toga and Caucasus clover were the highest when these plants were mixed with sheep manure and bush,annual and perennial herbs,and the height was 22.89 cm,27.00 cm,22.22 cm,8.56 cm;Oat was highest at 49.56 cm height when mixed with organic manure and arborous,annual and perennial herbaceous species;Perennial ryegrass peaked at 19.22 cm when spiked with meconium and arborized,annual,perennial herb mix and arborized,shrub,annual,perennial herb mix;Melilotus officinalis on the other hand,performed the best with the addition of humic acid in the same sowing mode,with a height of 6.44 cm.Melilotus officinalis survived only when monocultured,and performed better in the presence of humic acid supplementation;The soil organic matter and available K contents were affected differently by different sowing regimes.Perennial herb monoculture could significantly increase the organic matter content in the present soil.