The Experiment Research Of Soil Characteristics Investigation And Greening Soil Fertilization Effect In Shendong Mining Area

According to eco-environment restoration shows many problems such as soil salinization,gross turning yellow and the trees undergrowth and death in ShenDong mining area. Through sampling in field and pot experiment indoor and spraying experiment out door, we research which cause ShenDong mining area soil salinization reforest vegetation undergrowth. We assess this area's soil characteristic in total and definite the way to resolve eco-environment restoration. The research shows that slight salinization soil in this area and many SO42- in this soil. The soil ESP is different. The soil in Er biao duan is the highest which reached serious basify even more solonetz. The soil in Da xishan and lawn show slightly basify to moderate basify. Soil nutrient contents very low which to meet the vegetative plant growth. Irrigation water saltiness beyond the stander(6.58g/L-9.44g/L),this is one of the main factor cause the plant undergrowth and SO42- contents is the highest. In this area domestic in sludge and powdered carbon the organic and soil available nutrient are very high. If we to adding it in this area's soil , we could improve soil nutrient content. However in sludge there are many dissolubility salt so we must control the addition. Generally the sludge addition is less than soil's weight 3%, but powdered carbon addition is less than soil's weight 5%. Through many fertilize treatment in vegetative plant (Pinus sylvestnis var. mongolica Litv.), during one year, increment analysis shows that the tree's height discrepancy is not marked ness, and the trees etiolating was not be controlled so much so that making more serious.