施用沼液对无土栽培小白菜产量及品质的影响

目的]探索沼液和化学肥料组配施用对小白菜（Brassica chinensis L.）产量及品质的影响。方法]在无土栽培条件下,利用沼液作为营养液基液进行正交试验。结果]当施用的沼液营养液肥为1L含沼液250ml,配入3g尿素、2g磷酸二氢钾、1g氯化钙、2g硫酸镁和2ml微量元素储备液时,小白菜产量最高,为10.6g/株,而且与单纯施用化学肥料营养液（对照）相比,小白菜品质指标硝氮、Vc、可溶性糖、叶绿素含量并没有下降,Fe、Zn、Cu、Mn含量显著提高,而Cd、As含量则显著低于绿色食品绿叶类蔬菜NY/T743-2003]重金属含量的国家标准限值。结论]合理利用沼液栽培小白菜对提高其产量和品质有积极的作用。

Effect of Application of Biogas Slurry on the Chinese Cabbage Yield and Quality under Soil-less Cultivation

Objective]The effect of the application of the biogas slurry and chemical fertilizer on Chinese cabbage(Brassica chinensis L.) yield and quality was studied.Method]Under the condition of soilless cultivation,the orthogonal test in the biogas slurry as a nutrient liquidbased solution affecting Chinese cabbage was conducted.Results]The Chinese cabbage yield was the highest with the weight of 10.6 g/plant in the treatment of biogas slurry of 250 ml/L as nutrient liquid fertilizer mixed with 3 g urea,2 g pot...