不同磷源在砖红壤上芥蓝营养生长期的应用研究

摘要

[Objective]Effects of different phosphorus sources application on growth and nutrient accumulation of Brassica alboglabra L.H.Bailey was explorded.[Method]A pot experiment was conducted to investigate effects of different phosphorus sources (citrate-soluble phosphate fertilizer and water-soluble phosphate fertilizer) application on vegetative growth phase in acid red soil on Chinese kale growth ,nutrient accumulation and soil physical and chemical properties.[Result]Application of water-soluble phosphate liquid fertilizer had positive effects on the Chinese kale height,bolting stem diameter,biomass and nutrient accumulation of N,P and K.[Conciusion] Application of water-soluble phosphate liquid fertil-izer was advantageous to increase Chinese kale N,P,K accumulation.Meanwhile,it could significantly increase the content of available P in soil and improve the ability of soil supplying nutrient .%[目的]探讨不同磷源在砖红壤上对芥蓝生长发育及养分积累的影响.[方法]通过盆栽试验,研究枸溶性磷源和水效性磷源对芥蓝生长、养分积累及砖红壤土壤理化性状变化的影响.[结果]施用水溶性磷源液体肥料处理对芥蓝的株高、菜薹横径、生物量以及氮磷钾养分积累量等都有显著的促进作用.[结论]施用水溶性磷源液体肥料有利于促进芥蓝体内的氮、磷、钾养分积累,显著提高土壤中有效磷的含量,改善土壤的供肥能力.