콩을 이용한 장기간의 윤착이 토양 화학성과 작물 생산량에 미치는 영향
Effect of Long-Term Crop Rotation with Beans on Soil Chemistry and Production Efficiency
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Compost supplies nutrients and improves soil physical properties, but excessive use can lead to nutrient imbalances and environmental pollution. Crop rotation, particularly including soybean crops, is effective in supporting nutrient cycling and maintaining crop productivity through nitrogen fixation and phosphorus availability. This study investigated whether crop rotation including soybean crops, compared to compost input, enhances soil fertility and maintains crop productivity. The treatments included monoculture without nutrient treatment (CN-NC), monoculture with compost application (COM-NC), and compost application with crop rotation involving soybeans (COM-CR). The analysis results showed that in the COM-CR, which received a lower amount of compost input, the exchangeable cation content increased by 3-17% compared to the COM-NC. The soil organic matter content in the COM-CR was 23 g/kg and the available phosphorus was 155 mg/kg, which were higher than those observed in the COM-NC. Furthermore, nutrient uptake in the crop rotation system increased by 0.1 to 1.2% compared to monoculture, and crop yield was the highest (986kg/10a). These findings indicate that long-term crop rotation with soybeans effectively maintains soil nutrient levels and crop yield compared to continuous corn monoculture, while reducing the need for compost input.
Abstract
Compost supplies nutrients and improves soil physical properties, but excessive use can lead to nutrient imbalances and environmental pollution. Crop rotation, particularly including soybean crops, is effective in supporting nutrient cycling and maintaining crop productivity through nitrogen fixation and phosphorus availability. This study investigated whether crop rotation including soybean crops, compared to compost input, enhances soil fertility and maintains crop productivity. The treatments included monoculture without nutrient treatment (CN-NC), monoculture with compost application (COM-NC), and compost application with crop rotation involving soybeans (COM-CR). The analysis results showed that in the COM-CR, which received a lower amount of compost input, the exchangeable cation content increased by 3-17% compared to the COM-NC. The soil organic matter content in the COM-CR was 23 g/kg and the available phosphorus was 155 mg/kg, which were higher than those observed in the COM-NC. Furthermore, nutrient uptake in the crop rotation system increased by 0.1 to 1.2% compared to monoculture, and crop yield was the highest (986kg/10a). These findings indicate that long-term crop rotation with soybeans effectively maintains soil nutrient levels and crop yield compared to continuous corn monoculture, while reducing the need for compost input.
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