增施养分对复配气化渣-沙土的激发效应研究

Study on the Excitation Effect of Adding Nutrient on Gasified Slag-Sandsoil

为有效实现气化渣的生态化和规模化利用,借助土壤学“质地结构理论”和农学“测土配方理论”,通过增施养分,观测气化渣复配土的苜蓿生长特征。结果表明,(1)气化渣-沙土复配有利于沙地苜蓿生长。与对照相比,气化渣复配土的苜蓿株高、地上生物量和根系生物量的增幅分别为36.65%、3.97%和42.53%;(2)与测土配方(STF处理)相比,STF+EM(30 L/hm2)处理下苜蓿株高、地上生物量和根系生物量的增幅分别为9.45%、4.6%和12.85%。研究期望为气化渣生态化利用与毛乌素沙地高质量复绿提供科学支撑。

In order to realize the ecological and large-scale utilization of gasified slag,the growth characteristics of alfalfa in the compound soil of gasified slag are observed by adding nutrients with the help of“texture and structure theory”of soil science and“soil test formula theory”of agriculture.The results show that(1)gasified slag-sand mixture is beneficial to the growth of alfalfa.Compared with the control,alfalfa plant height,aboveground biomass and root biomass increase by 36.65%,3.97%and 42.53%respectively.(2)Compared with soil test formula(STF),plant height,above-biomass and root biomass increase by 9.45%,4.6%and 12.85%respectively under STF+EM(medium)treatment.The research is expected to provide scientific support for ecological utilization of gasified slag and high quality green recovery of Mu Us Desert.