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在河西走廊的盐化潮土上设置了糠醛渣的改土培肥田间试验,结果表明:甜菜施用糠醛渣与施用化肥比较,土壤容重、全盐、pH分别降低0.21g cm-3、0.36g kg-1、0.37;总孔度、自然含水量、贮水量、团粒结构、有机质、速效N、P、K、CEC分别增加7.93%、79.90g kg-1、131.95m3 hm-3、4.75%、0.61g kg-1、12.96mg kg-1、1.24mg kg-1、6.78mg kg-1、1.89cmol kg-1。施肥成本降低90元hm-2,施肥利润增加1716元hm-2。且施用糠醛渣能提高土壤中磷的活性和磷的利用率。
The results showed that compared with fertilization, the soil bulk density, total salt and pH decreased by 0.21g cm-3 and 0.36g kg-1 and 0.37; the total porosity, natural water content, water storage capacity, aggregate structure, organic matter and available N, P, K and CEC increased by 7.93%, 79.90g kg-1 and 131.95m3 hm-3, 3.75% 0.61 g kg-1, 12.96 mg kg-1, 1.24 mg kg-1, 0.78 mg kg-1, 1.89 cmol kg-1. Fertilizer cost reduced 90 yuan hm-2, fertilizer profit increased 1716 yuan hm-2. And furfural residue can improve the activity of phosphorus in the soil and phosphorus utilization.