Effect of ridge-till and no-till mulching modes in Northeast China on soil physicochemical properties

Abstract: Conventional ridge tillage is the dominant patterns used in ridge zone in Northeast China at present. In order to achieve the conversation tillage in Northeast China, we investigated the conventional tillage demonstration area of three provinces in Northeast China, conducted the field experiment and analyzed of different samples for the purpose of analyzing the influence on soil physicochemical properties. Comparison results show that no-till mulching ridge pattern is better in satisfying the bed environmental requirements of corn seed germination: Soil temperature is above 10℃-12℃ in 5-10 cm depth soil lawyer; soil moisture content is above 13%; the requirement of soil compactness is the upper loose, the lower tight, and increase the content of soil organic matter (1.43g/kg) and N, P, K content of the soil are 22.32 mg/kg, 2.05 mg/kg and 3.11 mg/kg, respectively. But we also found that the height of ridge in no-till mulching zone (9.43-11.5 cm) is lower (3.57-6.5 cm) than that in conventional tillage zone(13-18 cm), it is not conducive to playing the advantages of ridge tillage. We suggest intensifying the innovative design of corn no-till planter, in order to solve the problems of overweight, flatten ridge and compaction furrow.