| 저자(한글) |
Park, Woo-Kyun,Kim, Gun-Yeob,Lee, Sun-Il,Shin, Joung-Du,Jang, Hee-Young,Na, Un-Sung,So, Kyu-Ho |
| 초록 |
This experiment was conducted to evaluate the effect of carbonized rice hull (CRH) application on soil carbon storage and $N_2O$ emissions from upland soil. It was used at different rates of 0, 5, 10 and $20Mg ;ha^{-1}$ . During the Chinese cabbage cultivation, several soil chemical characteristics such as soil moisture, temperature and soil carbon were observed. Also, $CO_2$ and $N_2O$ emissions were monitored. Soil organic matter contents slightly increased with carbonized rice hull applied in all the treatments. The soil carbon contents with application rate of 0, 5, 10 and $20Mg ;ha^{-1}$ were 0, 1.3, 1.2 and $2.6g ;kg^{-1}$ , respectively. It was observed that soil carbon content was higher with increasing CRH application rate. Total nitrogen contents of soil applied with CRH relatively decreased with the course of time. However, $NO_3$ -N contents in the soil with CRH application rate of 5, 10 and $20Mg ;ha^{-1}$ were 28.6, 25.7 and $21.5mg ;kg^{-1}$ at the end of experiment, respectively. $CO_2$ emission at the $5Mg ;ha^{-1}$ application of CRH was higher about 18.9% than non-treatment, whereas those of $10Mg ;ha^{-1}$ and $20Mg ;ha^{-1}$ treatment were lower 14.4% and 11.8% compared to non-treatment, respectively. Also, it was shown that $N_2O$ emission reduced by 19.9, 28.3 and 54.0% when CRH was applied at 5, 10 and $5Mg ;ha^{-1}$ , respectively. |
