Absorbent Polymer Soil Erosion And Soil Erodibility Factor

To provide a simple method of predicting the soil loss, the relations between the physical characteristics of micro plots' soil and the quantity of the soil loss and the soil's factor K of credibility were studied based on the absorbent and biologic measures in field experiment. The experiment also research of the indexes which influence on the factor K of soil's credibility and the relationship between them, and study also to supply with the evidence of the effect of absorbent measure on managing the soil erosion.The treatment for the micro plots: treatment A soil+ absorbent + ryegrass, B soil + ryegrass, C soil + absorbent( Kehan 98),D bare soil, three replicates. The mount added of absorbent is 0.2% to the quantity of dry soil by air and mixed together. The indexes of the experiment include: the water aggregate stability of soil, soil quality, the organism quantity, runoff, quantity of the soil loss, the difference time of formatting runoff, the maximal holding of water in soil, the last rate of water infiltration, soil density, the rate of evaporation, the factor K of the soil credibility based on the RUSLE. The meteorologic datum came from the auto-aerograph beside. The experiment conclusions are as follows:1 Absorbent can improve the physical characteristics of soil obviously which lower the soil quantity, increase the terminal rate of infiltration and the maximum water content in soil, and the percentage of the water aggregate stability of soil more than 2mnu lmm, 0.25mm are different distinctly.2 Soil surface added absorbent is more coarse than that without absorbent obviously which was susceptible to depositional seal formation. Moreover, the coarser soil surfaces have the strong capability of anti-erosion against the splash of the raindrop. The soil surfaces without addition to absorbent format runoff easily.3 Water evaporation is the same or also between treatments, which imply the SAP has not the ability of restrain water from soil, but water evaporation rate is not the same, which perhaps has something with the texture of soil and the higher background water content because of absorbent.4, Treatment A can produce the lest quantity of runoff and soil loss than the others micro plots, on runoff, the difference is obvious between A and B C, D, but not on soil loss between A and B, C , the interaction of SAP and ryegrass is not obvious which is worthy of studying deepen.The difference of soil loss and runoff between treatment B and C isn't remarkablely which implys the affect of SAP and ryegrass is the same or about. The quantity of runoff and soil loss are less than...