摘要
沼肥含有作物生长所需的多种营养成分,在肥效上具有复合性、多效性。为揭示沼肥对青菜产量、品质以及土壤质量的影响,采用等养分原则和盆栽试验方法,研究不同施肥条件对青菜产量、硝酸盐含量、重金属元素含量以及土壤养分含量、重金属元素含量的影响,分析施用沼肥对提高蔬菜品质的作用。结果显示施用沼肥可以改善土壤环境,提高土壤肥力,明显提高作物产量和品质,减少土壤和作物硝酸盐含量,对土壤重金属元素含量没有显著影响,但是青菜镉、铅含量超出国家标准,因此应谨慎施用。
Biogas fertilizer contains a variety of nutrient composition, is a complex, multi - effectiveness organic fertilizer. Using this paper researched the effects of biogas fertilizer on output, nitrate content, heavy metals contents of Brassica chinensis L. , and the effects on soil nutrient and heavy metals contents, the results showed that biogas fertilizer improved soil chemical properties, soil fertility, as well as promoted the quantity and quality of Brassica chinensis L. products, decreased the nitrate content of soil and Brassica chinensis L. , there was no obviously affection on heavy metals content of soil, but the contents of Pb and Cd in Brassica chinensis L. were beyond the national standard, it is necessary to used biogas fertilizer carefully.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2010年第B03期43-47,共5页
Journal of Agro-Environment Science
关键词
沼肥
土壤肥力
作物品质
土壤重金属含量
biogas fertilizer
soil fertility
crops quality
heavy metals in soil
