토양 비옥도가 상이한 조건에서 돈분 퇴비와 요소 비료의 배추에 대한 시비효과

Abstract

The influences of the different mixture of urea fertilizer and pig manure compost as a nitrogen (N) source on Chinese cabbage yield, N uptake, and N agronomic efficiency (AE) were evaluated in two soils having different soil fertility levels. Increasing urea application level was very effective to improve yield and N uptake of Chinese cabbage, and the highest yield was obtained by urea fertilization alone in two soils. On the other hand, the lowest yield and N uptake was obtained from compost alone application in two soils. There was no significant difference in terms of the nitrogen AE between low and high fertility soils that were fully applied with urea. The AE values of Chinese cabbage applied by compost alone were significantly higher in the soil having a low fertility (28.8 g g-¹) than that in soil with high fertility (16.2 g g-¹), suggesting that N in compost was more responsive in improving the yield of Chinese cabbage in low fertility soils.