CAJ | 학술논문

采取田间原位尼龙网袋埋土法，研究油籽饼及苕子、油菜、小麦、玉米等有机物料埋土还田后，在植烟土壤中的腐解速率、各期残留物料中的活性有机 C、N含量的变化及其与腐解速率的关系。结果表明，油籽饼及苕子等不同有机物料埋土还田后的腐解速率表现为早期快后期慢。不同有机物料腐解速率的大小表现为油籽饼>苕子>小麦秸秆和油菜秸秆>玉米秸秆，腐解速率与全 N含量呈极其显著直线正相关，与活性有机 C/N比值呈极其显著负相关，而与活性有机 C含量之间没有相关性。随着腐解时间推移，油菜、苕子、小麦、玉米等秸秆中活性有机 C含量、全 N含量呈增加趋势，活性有机 C/N比值呈下降趋势，而油籽饼则相反。
채취전간원위니룡망대매토법，연구유자병급초자、유채、소맥、옥미등유궤물료매토환전후，재식연토양중적부해속솔、각기잔류물료중적활성유궤 C、N함량적변화급기여부해속솔적관계。결과표명，유자병급초자등불동유궤물료매토환전후적부해속솔표현위조기쾌후기만。불동유궤물료부해속솔적대소표현위유자병>초자>소맥갈간화유채갈간>옥미갈간，부해속솔여전 N함량정겁기현저직선정상관，여활성유궤 C/N비치정겁기현저부상관，이여활성유궤 C함량지간몰유상관성。수착부해시간추이，유채、초자、소맥、옥미등갈간중활성유궤 C함량、전 N함량정증가추세，활성유궤 C/N비치정하강추세，이유자병칙상반。
The oilseed cake, vetch, rapeseed straw, wheat straw and corn straw were buried in tobacco-planted soil. The decomposition rates, the variation of active organic C and N contents in the residues and the relationship between active or-ganic C and N contents and decomposition rate were investigated. The results showed the decomposition rates of different organic materials were al high in the early period and then low in the late period. Among the organic materials, the de-composition rates ranked as oilseed cake > vetch > wheat straw and rapeseed straw > corn straw. The decomposition rate was positively related to total N content (P<0.01), but was negatively related to the active organic C/N ratio (P<0.01). How-ever, there was no significant relationship between decomposition ratio and active organic C content. With the proceeding of decomposition, the active organic C con-tent and the total N content in rapeseed straw, vetch, wheat straw and corn straw al trended to increase, but the active organic C/N ratio trended to decrease. How-ever, the variation of active organic C content, total N content and active organic C/N ratio in oilseed cake was on the contrary.