电渗作用对水稻田土壤金属表面阻力的影响

在不同电压和含水量条件下,对本省6种水稻土进行室内电渗试验。以表观摩擦系数 f 值表征土壤-金属粘附和摩擦的综合作用。根据大量试验数据,采用三因素方差分析法分析电压、土壤粒度成分和含水量对 f 值的影响.用回归分析的方法分析电功率密度 N 与表观摩擦系数 f 的关系,建立数学模型,提出 N-f 关系的经验公式。田间犁耕试验表明,电渗能降低耕作阻力,并改善犁壁脱土性能.

EFFECT OF THE ELECTRICAL PERMEATION ON THE SURFACE RESISTANCE OF PADDY SOIL-METAL

The electrical permeation experiments on six paddy soils in Fujian province were carried out under condition different voltages and water contents.It was demonstrated,that the method of electrical permeation can decrease surface resistance of soil-metal enormously. The synthetical action of adhesion and friction was represented by apprent frictional coefficient f.According to a vast amount of experimental data,variance analyses of three factors were done to analyze the influence of voltage,granularity component and water content of soils on the value of f.Method of regression analyses were done to analyze the relationship between electrical power density and apparent frictional coefficient f. Mathematical model was set up.An experimental formula representing the relationship between N and f was put forward.The experiments of farm plough indicated that electrical permeation can decrease plough inidcated that electrical permeation can decrease plough resistance and improve the ploughere property of giving up soils.