摘要： 对国家缓控释肥工程技术研究中心分离保藏的一株溶磷真菌PSFK的溶磷性能进行研究,并进行盆栽试验,研究其对鸡毛菜的促生作用。结果表明,PSFK菌株具有很强的降解无机磷能力,在以Ca₃(PO₄)₂为唯一磷源的无机磷液体培养基中培养6d水溶磷含量达到886.2mg⁄L,为对照组的89.92倍。在土壤中培养50d,有效磷含量升高27.19mg⁄kg。PSFK菌剂对鸡毛菜的促生作用明显,以添加2%菌剂的处理增产效果最好,显著提高鸡毛菜的生物产量和叶片数。鲜质量与单施硝基肥处理相比差异极显著,增幅达到32.94%,干质量增幅达到29.37%,有明显的促生作用。

关键词: 溶磷真菌, 鸡毛菜, 菌剂, 促生

Abstract: A dissolving phosphate fungi (PSFK) of this laboratory separation and preserved was studied by the research of phosphate}lissolving characteristics and rape potted planting experiment. The results show that PSFK has strong ability of degradation of inorganic phosphorus and obvious promoting effect. After 6 days fermentation in the medium with Ca3 (P04) Z as the sole phosphorus source,soluble phosphorus content reached to 886. 2 mg/L} which is 89. 92 times higher than that of control group. What’s more,available phosphorus content increased 27. 19 mg/kg after 50 days cultivation in soil. PSFK has obvious effect on promoting growth of Brassica chinensis,the adding of 2% PSFK has the best effect on increasing the biological yield and number of leaves significantly. Compared with the single application of nitro fertilizer}fresh weight and dry weight was increased by 32.94% and 29. 37% respectively. PSFK shows evident promoting effect on plant.

Key words: Dissolving phosphate fungi, Brassaca chanensas, Microbial inoculum, Growth promoting effect

中图分类号: 

• Q939.5