Studies On Aquasorb And Different Exogenous Sustances Impact On Vegetation Growth

water is an important factor for vegetation growth,In arid areas due to lack of water we can not be made healthy plantation growth,so,improving the physical and chemical properties of soil to enhance its water to protect the ability of fat is particularly important.In this paper,less rainfall for our country,land of drought,low soil organic matter content,soil water-retention properties of the bad difficult site,The use of different exogenous substances and the different amount of aquasorb ratio,with pot experiment to improve the survival rate of vegetation,to improve water retention of soil,fertilizer capacity security.This paper discussed the application Hydrogel and foreign substances of promoting the growth of seedlings through Planting the Robinia pseudoacacia,torch and Liquidambar seedlings to observing two different ways of handling the growth of saplings,physiological and physical and chemical properties of soil and other indicators on May to September in 2008.The results show that After the source material with seedling growth better than the untreated control seedling.In Greenhouse simulation test:Leaf area growth of three species Liquidambar at D (aquasorb/8g+fulvic acid/2.5g+Rare Earth/0.08g+NAA/0.03ppm+Potassium chloride/3g+ Urea/5g+DAP/3g) Leaf area is growthing better than other.Robinia pseudoacacia and torch's Leaf area is growthing better in B.so we know to use suitable water-retaining agent and the concentration of exogenous substances can effectively promote seedling growth.Liquidambar at D(aquasorb/8g+ fulvic acid/2.5g+Rare Earth/0.08g+NAA/0.03ppm+Potassium chloride/3g+Urea/5g+DAP /3g),Robinia pseudoacacia and torch in B(aquasorb/8g+fulvic acid/1.5g+Rare Earth/1.2g+ NAA/0.03ppm+Potassium chloride/2g+Urea/8g+DAP/5g) diameter changed faster.As using Hydrogel and foreign substances,it changed the soil of the water supply,making seedlings photosynthesis and leaf water potential on the curve relatively relaxed,Liquidambar at D(aquasorb/8g +fulvic acid/2.5g+Rare Earth/0.08g+NAA/0.03ppm+Potassium chloride/3g+Urea/5g+ DAP/3g),Robinia pseudoacacia and torch in B(aquasorb/8g+fulvic acid/1.5g+Rare Earth/1.2g +NAA/0.03ppm+Potassium chloride/2g+Urea/8g+DAP/5g) transpiration rate higher than other formulas.Hydrogel and foreign substances affect little the soil PH value,To promote good growth of vegetation,it not to fundamentally change the soil salinization of the soil,and can significantly increase the total N content and soil organic matter content.Soil water makes the most reasonable way inA,B,C. in the three most obvious formula A formula the highest chlorophyll content.The seedling with Application of Hydrogel and foreign substances survive longer than the contrast seedlings.Planting the Robinia pseudoacacia survived to More than 30 days in D(aquasorb/8g+fulvic acid/2.5g+Rare Earth/0.08g+NAA/0.03ppm+Potassium chloride/3g+Urea/5g+DAP/3g) torch and Liquidambar survived to More than 30 days in B(aquasorb/8g+fulvic acid/1.5g+Rare Earth/1.2g+NAA/0.03ppm+Potassium chloride/2g+Urea/8g+DAP/5g)This shows that the amount of suitable water-retaining agent and the ratio of exogenous substances on the growth of vegetation has a good role.