CAJ | 학술논문

利用盆栽试验,研究了镧对青菜生物量、植株氮磷钾含量及土壤酶活性的影响.结果表明,施用镧显著增加了青菜生物量,与对照相比地上部干重提高了5.49%～19.78%,根干重提高了13.51%～51.35%.在低浓度下,随镧浓度的升高,青菜茎叶和根的氮、磷、钾含量逐渐增加,到一定浓度后,随着镧浓度的继续升高,含量反而逐渐降低.镧施入土壤后对脲酶、酸性磷酸酶、转化酶活性表现出刺激作用并随浓度的升高而增强,而对过氧化氢酶活性有轻微的抑制作用,对脱氢酶活性有强烈的抑制作用.
이용분재시험,연구료란대청채생물량、식주담린갑함량급토양매활성적영향.결과표명,시용란현저증가료청채생물량,여대조상비지상부간중제고료5.49%～19.78%,근간중제고료13.51%～51.35%.재저농도하,수란농도적승고,청채경협화근적담、린、갑함량축점증가,도일정농도후,수착란농도적계속승고,함량반이축점강저.란시입토양후대뇨매、산성린산매、전화매활성표현출자격작용병수농도적승고이증강,이대과양화경매활성유경미적억제작용,대탈경매활성유강렬적억제작용.
The effects of lanthanum on the biomass and plant N, P, K content of Green Stuff and the soil en-zymes activities were studied by pot culture experi-ment. The results showed that the biomass was in-creased significantly by applying lanthanum, the dry weight of above-ground increased by 5.49%～19.78%, and the root dry weight increased by 13. 51%～51.35%. The content of N, P, K of Green Stuff's leaf and root was promoted by the lower concentration of La. When La content reached some concentration, the content of N, P, K decreased with the increasing La content. The activity of urease, acid phosphatase, and invertase were stimulated by lanthanum, and they increased with the La concentration increasing, how-ever, the activity of catalase was inhibited by La and the activity of dehydrogenase was inhibited seriously by it.