摘要
选择土默川平原草甸碱土为研究区域。以脱硫石膏改良碱土保持放牧草地利用5年后为研究对象．通过定位监测小区试验的方法，探索改良碱土效果的稳定性。结果表明：土壤碱化度，各改良处理O-20cm土层碱化度保持基本稳定；20-40cm土层碱化度呈现回升趋势，但是明显低于对照区，仍然保持一定的改良效果。土壤pH值各改良处理0．20cm土层都有所回升。但均小于9．0，仍然低于对照区。依然保持改良效果；20-40era土层pH值变化比较平缓，稳定性较好。土壤全盐量各改良处理0-20era土层都有所下降；保持持续的改良效果；20-40cm土层全盐量各处理下降与回升表现有所差异。表明不同处理呈现不同的改良效果与稳定性：0-40em土层含盐量，2011年结果仍然低于2006年含盐量。
The study area was conducted in meadow Alkaline soil at the Tumochuan plain.The research target grassland was improved by desulphurization gypsum before 5 years and kept grazing to now.The saline-alkali soil characteristics and stability were analyzed concretely.Effect in improvement of alkaline soil were analyzed through the method of plot experiment with located monitoring.The results showed： the degree of alkalization of each treatment kept essence of stabilization in the 0cm - 20cm soil layer and 20cm-40em showed the rising tread, but it was less than the control;it is obvious effect that was improved. All of the soil pH values were rising at 0em-20cm layer and there were less that 9.0 that it was still lower than control.The pH values change very slowly that it had a better stability. The total salt of each improved treatment are decreased at 0cm-20cm soil layer and 20em-40em soil layer has different trends. It indicates different treatments showed different improved effect and stability.In the 0cm-40cm soil layer, the content of salt results is lower in 2011 than 2006,it is more validate 52 is the optimum treatment area.
出处
《内蒙古农业科技》
2012年第3期73-76,共4页
Inner Mongolia Agricultural Science and Technology
基金
国家科技支撑项目资助(2007BAC08B01)
关键词
脱硫石膏
改良碱土5年
稳定性
Desulphurization gypsum
Improved alkaline
Stability
