CAJ | 학술논문

为阐明不同菌渣肥施用量对柑橘果园有机碳矿化的影响，对定位试验柑橘果园单施化肥、单施有机肥、有机无机肥配施、不施肥处理的土样进行室内培养，定期测定土壤CO2释放量。结果表明，整个培养过程，土壤有机碳矿化速率前期迅速下降，培养中期缓慢下降，培养后期趋于稳定状态。相关分析表明有机碳矿化速率与土壤C/N具有显著相关性。与不施肥和单纯施用化肥相比，施入有机肥的土壤具有更高的微生物活性，从而引起土壤平均有机碳矿化速率提高5.2％～104.6％；但随着有机肥施用量的增加，土壤潜在可矿化C量占总有机碳的比例并没有显著增加，说明通过施用有机肥可以增加果园土壤有机碳的积累。
위천명불동균사비시용량대감귤과완유궤탄광화적영향，대정위시험감귤과완단시화비、단시유궤비、유궤무궤비배시、불시비처리적토양진행실내배양，정기측정토양CO2석방량。결과표명，정개배양과정，토양유궤탄광화속솔전기신속하강，배양중기완만하강，배양후기추우은정상태。상관분석표명유궤탄광화속솔여토양C/N구유현저상관성。여불시비화단순시용화비상비，시입유궤비적토양구유경고적미생물활성，종이인기토양평균유궤탄광화속솔제고5.2％～104.6％；단수착유궤비시용량적증가，토양잠재가광화C량점총유궤탄적비례병몰유현저증가，설명통과시용유궤비가이증가과완토양유궤탄적적루。
The CO2 release in Citrus orchard soil samples respectively applied with organic fertilizer , chemical fertilizer ,chemical and organic fertilizer were analyzed during their incubation period to study the effects of different edible fungus residues on organic carbon mineralization in orchard soils .The results showed that the rate of SOC mineralization decreased quickly at the beginning ,then decreased slowly during the middle incubation time ,and kept relatively stable during the later incubation time .Correlation analysis showed that there was a significant correlation between the mineralization rate of SOC and C/N . Compared with the treatments of no-fertilizer and chemical fertilizer ,organic fertilizer application in the soil could improve soil microbial activity ,and average mineralization rates of the soils increased by 5.2% - 104.6% . But there was no significant increase of potential carbon mineralization in the ratio of total organic carbon with the increasing of the amount of organic fertilizer in citrus orchard with the increase of organic fertilizer ,indicated that mixed application of inorganic and organic fertilizer on soil could increase the accumulation of soil organic carbon .