摘要
在盆栽条件下,距土壤表面15 cm分别按照土壤总重量的0、1%、2%、3%和4%基施生物质炭,研究了生物质炭对0～10 cm土壤矿质养分供应能力以及菜用大豆对矿质养分吸收的影响。结果表明,基施生物质炭降低了土壤碱解氮含量,但未达显著水平(P>0.05);随生物质炭比例的提高,土壤有效磷和速效钾含量显著增加。基施生物质炭对菜用大豆氮素吸收能力无显著影响,但降低了植株的全磷、钾含量以及地上部分生物量。经分析初步认为,基施生物质炭对土壤的供氮能力和植株的氮素吸收没有显著影响,但改善了土壤的有效磷、钾供应。
Pot experiment of vegetable soybean was performed outdoors, and basal biochar from 1% to 4% was applied to the 15 cm depth of soil. The effect of bioehar on soil mineral nutrient supply capacity between 0 and 10 em and nutrient absorption of vegetable soybean were studied. Biochar decreased the content of alkali-hydrolytic nitrogen in soil, however, the content of a- vailable phosphorous and potassium in soil signifieantly increased with the increasing of biochar proportion. Biochar had no sig- nificant effect on nitrogen absorption ability of vegetable soybean, however, decreased total phosphorus and potassium of plant and aboveground biomass. Therefore,lamination bioehar had no significant influence on nitrogen supply capacity of soil and ni- trogen absorption of plant but improved the supply of available phosphorous and potassium of soil.
出处
《大豆科学》
CAS
CSCD
北大核心
2013年第1期72-75,共4页
Soybean Science
基金
黑龙江省高等教育教学改革项目(JG2012010454)
黑龙江省教育厅教育科学规划项目(GBD1211046)
黑龙江八一农垦大学博士启动金(校启2012DB-02)
关键词
生物质炭
矿质养分
菜用大豆
Biochar
Mineral nutrient
Vegetable soybean
