The distribution

type

and salt characteristics of inland saline soil in the Hexi corridor were analyzed.Experiments of bioremediation and control were conducted with the alkali meadow grass planted in saline soil for 3 years.Contrasted with control group

topsoil desalination rate was up to 77.00%;pH value decreased 0.25 pH unit;soil bulk density decreased 0.14 g/m3;total porosity increased by 5.29%;soil aggregate structure increased by 23.14%;soil water content increased 70.30 g/kg;average triennial alkali grass yield was 36 000 kg/hm2(fresh weight).In addition

planting forage in saline soil as a medium and establishing a compound agro-forestry-animal system promoted the sound combination of planting industry

forestry

and livestock husbandry.Because of the reasons

utilization ratio of land reached more than 184.00%;the income of land increased from 16 300 to 35 500 yuan/hm2;average income per farmer in the controlling region increased by 66.00%

from 2 160.70 to 1300.80 yuan.