Abstract:

Using 8 tree species in different dosages special amendments and lime test to study the soil improvement in antimony mine on the effects of afforestation survival. The results showed that: different doses of amendments and lime had very significant effects on pH values in the 0~20, 20~40, 40~60 cm soil. It was very significant effects that different doses of soil amendments and lime on survival rate, among species and 1 year of height increment. After application of soil amendments, the survival rate of manchurian catalpa, goldenrain tree, chinese fir, robinia and zenia insignis were high which was 84.5% to 88%; The height increment of zenia insigni, robinia, smanchurian catalpa and goldenrain as large as 62.44 to 155.33 cm; 200 g of amendment per hole was best, the average survival rate of 8 trees was 89.2%, while the contrast was only 50.8%. It can improve the survival rate by 38.4% in control and reasonable casting amendment. After application of lime, the survival rate of manchurian catalpa, goldenrain tree, chinese fir, robinia and zenia insignis were high which was 84.6% to 95.3%; The height increment of zenia insigni, robinia, smanchurian catalpa and goldenrain as large as 60 to 152.3 cm; 200 g of lime per hole was best, the average survival rate of 8 species was 79.5%, while the contrast was 54.7%. It can improve the survival rate by 38.4% in control and reasonable casting lime. The mechanism of soil amendments and lime may increase the pH values of soil, accordingly, reduce the content of heavy metals in soil, which can be used to reduce the bio-availability.