CAJ | 학술논문

采用盆栽试验,研究了不同生物炭用量(0,1%,5%,10%(w/w)和不同氮肥水平(0,400,800 kg/hm2)及其交互效应对高粱( Sorghum bicolor( L.) Moench)苗期生长及有关生理特性的影响。结果表明,EC值低的土壤植株生长状况整体要优于EC值高的土壤；1%生物炭对作物生长略优于0处理,而5%和10%生物炭对高粱苗期生长具有抑制作用；不施氮肥与施400 kg/hm2氮肥间无显著差异,800 kg/hm2氮肥水平对植株生长产生抑制效应；生物炭用量、施氮量及其交互效应对2种土壤植株干质量均有显著影响；叶绿素的表现与其生长状况表现基本一致；还原糖含量受生物炭和氮肥影响表现不一；硝酸盐含量与氮肥水平呈显著正相关,与生物炭用量呈负相关。研究表明,低量生物炭(1%)有利于高粱种子发芽和幼苗生长,高量生物炭(5%和10%)和高氮水平(800 kg/hm2)在一定程度上抑制了高粱幼苗的生长；植株硝酸盐含量随生物炭施用量增加而相应减少,随氮肥水平提高而相应增加。
채용분재시험,연구료불동생물탄용량(0,1%,5%,10%(w/w)화불동담비수평(0,400,800 kg/hm2)급기교호효응대고량( Sorghum bicolor( L.) Moench)묘기생장급유관생리특성적영향。결과표명,EC치저적토양식주생장상황정체요우우EC치고적토양；1%생물탄대작물생장략우우0처리,이5%화10%생물탄대고량묘기생장구유억제작용；불시담비여시400 kg/hm2담비간무현저차이,800 kg/hm2담비수평대식주생장산생억제효응；생물탄용량、시담량급기교호효응대2충토양식주간질량균유현저영향；협록소적표현여기생장상황표현기본일치；환원당함량수생물탄화담비영향표현불일；초산염함량여담비수평정현저정상관,여생물탄용량정부상관。연구표명,저량생물탄(1%)유리우고량충자발아화유묘생장,고량생물탄(5%화10%)화고담수평(800 kg/hm2)재일정정도상억제료고량유묘적생장；식주초산염함량수생물탄시용량증가이상응감소,수담비수평제고이상응증가。
A pot experiment was conducted to evaluate the effect of biochar( Produced from corn stover) at ap-plication rates of 0,1%,5%,10%(w/w)and different nitrogen levels of 0,400,800 kg/ha and their interactions on early seedling growth and related physiological characteristics of sorghum ( Sorghum bicolor( L. ) Moench) . The ex-perimental results showed that the growth of seedlings in the low EC soil was better than the high EC soil as a whole. 1% biochar was superior to the control for the seedling growth;however,5% and 10% biochar had inhibitory effect on sorghum seedling growth. There was no significant difference between two levels of 0,400,800 kg/ha level produced inhibition on the seedling growth. The effects of biochar application rates,N application levels and their in-teraction on seedling dry weight in both low EC and high EC soils were significant. The trend of influence of differ-ent treatments on sorghum seedling chlorophyll was consistent with the sorghum growth parameters change;the influ-ence of different treatments on the plant reducing sugar was mixed. Nitrate content of sorghum was significantly posi-tively related to the level of nitrogen fertilizer and negatively correlated with biochar dosage. This study indicated that low biochar application rate(1%) could stimulate seed germination and early seedling growth,higher biochar application rate(5% and 10%) and higher N application level(800 kg/ha) could inhibit seedling growth. Nitrate content in seedlings was decline with biochar rate increase,and increase with N level enhance.