苏打盐碱土草原退化防治技术研究

Study on the Technology of Prevention and Control of Grassland Degeneration in Soda Salinized Soil

通过苏打盐碱土退化草原的现场试验示范，研究了草原切耙、人工播种、围栏封育及追施氮肥等措施对草原退化的防治作用。结果表明：草原切耙可明显降低土壤容重，提高土壤孔隙度和田间持水量；切耙后人工补播及追施氮肥可使草原快速复壮，草原产草量大幅度提高，植被覆盖度得以较快恢复。草原切耙后人工播种并围栏封育是防治草原退化的有效措施，在此基础上追施氮肥可进一步加速草原复壮进程。

This paper studied the prevention and control of grassland degeneration. The result showed that grassland cutting and harrowing could depress unit weight of soil and increase soil porosity and field capacity Manual sowing for leakage and top dressing nitrogenous fertilizer could make grass robust Improve the output of grass, and recover degree of cover faster So, after cutting and harrowing, manual sowing and fence of grassland for grass growing are effective measures to prevent and control grassland degeneration on the basis of it, top nitrogenous fertilizer could further speed up the process of grassland recovering robust