Application of Reduce Tillage with a Strip Tiller and its Effect on Soil Erosion Reduction in Chinese Cabbage Cultivation
2011
Lee, J.T., National Institute of Crop Science, RDA, Suwon, Republic of Korea | Lee, G.J., National Institute of Crop Science, RDA, Suwon, Republic of Korea | Ryu, J.S., National Institute of Crop Science, RDA, Suwon, Republic of Korea | Hwang, S.W., National Institute of Crop Science, RDA, Suwon, Republic of Korea | Park, S.H., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Zhang, Y.S., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Jeong, Y.S., Kangwon National University, Chuncheon, Republic of Korea
Strip tiller equipment was developed to reduce soil erosion in the slope land for highland agricultural area. The equipment consisted of 4 rows strip tillage device and fertilizer applicator. The field was tilled in 10 cm width and in 10 cm depth by the equipment, of which tilled surface was 16.7% of full-width tillage. The working time and fuel consumption of the equipment were 3.8 hours ha-¹ and 24.4 L ha-¹ respectively, which were 59% and 74% less than those of the conventional tillage. Fertilizer efficiency of the equipment in cultivation of Chinese cabbage was 1.7, 1.6 and 1.5 times higher in nitrate, phosphorous and potassium respectively, than conventional tillage. When the equipment was used after covering of rye residue, the quantity of runoff was 49~67% lower than the conventional tillage. And the quantity of soil loss were 1.3 and 0.2 Mg ha-¹ at right after and 30 days after planting of Chinese cabbage respectively, while 11.5 and 4.1 Mg ha-¹ in conventional tillage. In conclusion, the strip tillage equipment developed in this study can be applicable to slope land, so that soil loss of 90% can be reduced.
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