This will improve available K in the soil. 4 ) K diffusion coefficient increased with the increase of soil water content. In comparing 0.8 with 0.3 bar soil water content, the K diffusion coefficient increased from 0.56 to 2.4 ( cm/s 10);

• 随着土壤含水量增加；水溶性钾在土壤中的扩散强度有明显提高；0.；3巴含水量与0