Effects of Different Tillage Layer Structures on Soil Compaction and Soil Water Content

The experiments were designed in the middle black soil zone of Jilin province. The results showed that the difference of soil compaction of different treats were significant from 0 to 20 cm in profile of soil. The difference of treatments was not significant from 21 cm to 45 cm. Through comparison of different treatments with the average of soil compaction from 0 to 45 cm, soil compaction of MJHJ with ridge was most hardness, MJHJ with plain and conventional tillage were secondary. Soil water content was increased with depth from 0 to 30 cm, but it was decreased with depth from 31 cm to 60 cm. The soil water content of MJHS was higher than conventional tillage at every depth of soil layer from 0 to 60 cm, the difference was significant(P0.05). So, MJHS tillage could decrease soil compaction, increase soil water content, improve soil structure, moderate water and air in the soil.