含钾有机废弃物糠醛渣改土培肥效应研究

Effect of Potassium Containing Organic Offal Furfural Dreg on Soil Fertility

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。

An experiment for improving soil fertility was conducted in field to test the effect of furfural dreg on the salt contents in the Hexi Corridor. The result shows： Compared with the use of the furfural dreg and the chemical fertilizer for beet, we found that soil bulk density, salt content and pH were reduced by 0.21g cm^-3, 0.36g kg^-1 and 0.37, respectively. Total porosity, water content, the amount of stored water, aggregate structure, organic matter, available N, P and K and CEC increase by 7.93%, 79.90g kg^-1, 131.95m^3 hm^-2, 4.75% , 0.61g kg^- 1, 12.96mg kg^-1, 1.24mg kg^-1, 6.78mg kg^-1 and 1.89cmol kg^-1,respeetively. The cost is reduced by 90 yuan hm^-2, while the profit increases by 1716 yuan hm 2. In addition, the utilization rate of phosphorus and the content of available phosphorus were improved by using the furfural dreg.