Planosol Soil Condition Improvement Effect of a New Plow of Three-Stage Subsoil Interval Mixing

In this paper, a three-stage subsoil interval mixing four-gang plough (TSIMF) was manufactured to enhance the property of planosol soil in 2016. The working width is set to 2 m to obtain a low operation cost. The total draught of the TSIMF was about 100 kN, the running resistance of the tractor included. The traction force (draught) of TSIMF was determined and the soil condition improved with the TSIMF was discussed. A field test of soybean with TSIMF showed that the soil moisture was about 2% volume greater than that in the CK (subsoiler) field. The soil temperature with the TSIMF was about 1 ºC greater than the CK in the plowed layer, and the yield was 120% of the treatment of the CK. Sanjiang Plain is one of the most important commodity grain bases in China, and the albic soil accounts for about 25% of the total cultivated land. Improving the property of the albic farming land attaches great significance to the stability and increase of national grain production.