Changes in Ridge Height and Maize Growth with Various Conservation Treatments Affected by Rainfall Characteristics in Saemangeum Reclaimed Land

It is important to form and maintain ridges for air permeability within the upland crop root zone in Saemangeum reclaimed land with poor drainage. The ridge area, however, difficult be maintained due high content of sand silt, which are susceptible water erosion. This study was conducted investigate reduction height maize growth as affected by rainfall characteristics through application maintenance technology under cultivation land. Four treatments were examined: control, covered residue (RR), vegetation furrow (VF), RR + VF. Maize Kwangpyeongok. erosivity factor compare affecting changes greater at 2,653.5 MJ mm ha-1 hr-1 2nd year than that 505.8 1st year. No significant difference decrease (DRH) found between treatments, but DRH (8.5 cm) larger (6.6 stronger erosivity. soil erodibility tested 0.587 Mg hr MJ-1 mm-1 national average 0.027 mm-1. had a negative relationships fresh weight implying reduced provided less functionality plant growth. Therefore, variety conservation treatment supposed studied arable lands Saemangeum. Relationships between: a) yield 2019 first (DRH1st); b) 2020 total (DRHT). Symbols statistical significance are: *P < 0.05; **P 0.01.