CAJ | 학술논문

采用田间小区试验,研究3种不同方法:熔融高压(YA)、水溶浸泡(PAO)、直接混合(HUN)制备的生物炭基尿素及包衣尿素(SU)对芹菜产量、品质、土壤中硝态氮含量的影响.结果表明:与施用普通尿素相比,3种生物炭基尿素和包衣尿素都显著提高芹菜产量,依次顺序为:水溶浸泡>熔融高压>直接混合>包衣尿素,分别增加18.66%、14.90%、10.85%和6.73%;芹菜硝酸盐含量分别降低48.24%、44.93%、31.73%、29.20%;而3种方法制备炭基氮肥芹菜Vc含量提高7.21%~37.02%;包衣尿素和3种生物炭基尿素氮肥利用率分别提高4.71%、9.94%、11.10%和6.93%;同时,生物炭基氮肥能明显减少硝态氮向土壤深层渗漏,减轻氮素淋失和对地下水污染风险.
채용전간소구시험,연구3충불동방법:용융고압(YA)、수용침포(PAO)、직접혼합(HUN)제비적생물탄기뇨소급포의뇨소(SU)대근채산량、품질、토양중초태담함량적영향.결과표명:여시용보통뇨소상비,3충생물탄기뇨소화포의뇨소도현저제고근채산량,의차순서위:수용침포>용융고압>직접혼합>포의뇨소,분별증가18.66%、14.90%、10.85%화6.73%;근채초산염함량분별강저48.24%、44.93%、31.73%、29.20%;이3충방법제비탄기담비근채Vc함량제고7.21%~37.02%;포의뇨소화3충생물탄기뇨소담비이용솔분별제고4.71%、9.94%、11.10%화6.93%;동시,생물탄기담비능명현감소초태담향토양심층삼루,감경담소림실화대지하수오염풍험.
Field experiment was carried out to study the effect of biochar-based urea prepared by melt pressure(YA), water immersion(PAO) and directly mixed(HUN)methods on yield, quality of celery and NO3--N content in soil compared with urea(U)and coated urea(SU). The results showed that three kinds of biochar-based urea and coated urea significantly increased the yield of celery, the order was:PAO>YA>HUN>SU, yield increased by 18.66%, 14.90%, 10.85%and 6.73%, respectively;Biochar-based fertilizer application significantly re-duced nitrate content of celery, the order was: PAO>YA>HUN>SU, reduced by 48.24%, 44.93%, 31.73%, and 29.20%, respectively;Biochar-based fertilizer increased Vc content of celery from 7.21%to 37.02%compared with urea treatment;N use efficiency of celery in-creased 4.71%, 9.94%, 11.10%and 6.93%respectively by application of SU, YA, PAO and HUN treatments. Additionally, biochar-based urea application could evidently decrease the quantity of soil NO3--N leached to deep soil and decrease the pollution to ground water.