CAJ | 학술논문

为初步探讨生物质炭对烤烟生长及根际土壤理化性质的影响,通过盆栽试验,研究了在施用化肥的基础上添加不同量(70,140,210 g/盆)生物质炭对烤烟干物质积累量及根际土壤酶活性、土壤有机质含量、土壤微生物量碳( SMBC)的影响。结果表明：施加生物质炭提高了烤烟生育中、后期干物质积累量,且添加140 g/盆生物质炭处理效果最明显。在烤烟移栽后80 d内,生物质炭抑制根际土壤转化酶活性,但这种抑制作用随着生育期的推进而逐渐减小,至移栽后80 d,添加70 g/盆生物质炭处理的土壤转化酶活性超过了同时期不添加生物质炭的处理；施加生物质炭可以提高烤烟生育后期过氧化氢酶活性,移栽80 d后,土壤过氧化氢酶活性随着生物质炭添加量的增加而提高。土壤有机质含量随着生物质炭添加量的增加而显著提高；在烤烟生长后期,施加生物质炭对土壤微生物量碳具有提高作用,以140 g/盆生物质炭处理效果最明显,70 g/盆处理次之。因此,施加生物质炭可以显著提高烤烟全生育期根际土壤有机质含量,改善土壤质量(生长后期),促进烤烟生长,且以施加70,140 g/盆生物质炭处理表现出的综合效果较好。
위초보탐토생물질탄대고연생장급근제토양이화성질적영향,통과분재시험,연구료재시용화비적기출상첨가불동량(70,140,210 g/분)생물질탄대고연간물질적루량급근제토양매활성、토양유궤질함량、토양미생물량탄( SMBC)적영향。결과표명：시가생물질탄제고료고연생육중、후기간물질적루량,차첨가140 g/분생물질탄처리효과최명현。재고연이재후80 d내,생물질탄억제근제토양전화매활성,단저충억제작용수착생육기적추진이축점감소,지이재후80 d,첨가70 g/분생물질탄처리적토양전화매활성초과료동시기불첨가생물질탄적처리；시가생물질탄가이제고고연생육후기과양화경매활성,이재80 d후,토양과양화경매활성수착생물질탄첨가량적증가이제고。토양유궤질함량수착생물질탄첨가량적증가이현저제고；재고연생장후기,시가생물질탄대토양미생물량탄구유제고작용,이140 g/분생물질탄처리효과최명현,70 g/분처리차지。인차,시가생물질탄가이현저제고고연전생육기근제토양유궤질함량,개선토양질량(생장후기),촉진고연생장,차이시가70,140 g/분생물질탄처리표현출적종합효과교호。
For exploring the effects of biochar application on flue-cured tobacco growth and the physical and chemical property of rhizosphere soil. A pot experiment was conducted to study the accumulation of tobacco leaf dry matter,rhizosphere soil properties so as:soil enzyme activity,content of soil organic matter,soil SMBC by applying different amount(70,140,210 g/20 kg)of biochar. The results showed that:The application of biochar increased the dry matter accumulation of tobacco at the middle and late growth stage,and the effect with 70 g biochar application was most obvious. Biochar inhibited the activity of soil invertase,but the inhibition decreased with the development of growth period,and at 90 days after transplanting,the activity of soil invertase with 70 g biochar application was higher than CK. Biochar can increase the activity of catalase at the late growth stage. The application of biochar sig-nificantly increased content of organic matter in the whole growth period,increased soil SMBC in the late growth stage. So,the application of biochar can significantly increased content of organic matter,modified growth environ-ments of flue-cured tobacco,and improved its growth,low-to-mid application rate of biochar(70,140 g/20 kg ) has the better effects.