沼液沼渣改良盐碱土试验初报

Primary Experiment of Biogas Slurry on Saline-alkali Soil

盐碱土作为宝贵的耕地后备资源,如何有效的改良和利用是实现农业可持续发展亟待解决的重大研究课题。本研究通过对不同盐渍化程度的土壤施用沼液沼渣,进行盐碱土改良新措施的探讨,同时提高沼液沼渣综合利用效率。结果表明,沼液沼渣可显著降低土壤容重和pH值,增加土壤有机质和有效氮,施用沼液沼渣改良盐碱土是可行的。

Saline - alkali soil is one of the precious reserve resources of cultivated land. The improvement and utilization of saline - al- kali soil has been an urgent important subject of achieving sustainable development of agriculture. This study investigated a new meas- ure to improve saline - alkali soil and the utilization efficiency of biogas slurry, through comparing the impact of different doses of bio~ gas slurry on the physical and chemical properties of saline - alkali soil. The results showed that biogas slurry could significantly reduce soil bulk density and pH and could improve soil organic matter and available nitrogen, and this indicated that the biogas slurry improve- ment of saline - alkali soil wais feasible.