摘要
通过施用等养分(含w=20%磷矿粉)的生物有机肥和加入解磷细菌的生物有机肥进行盆栽试验,研究生物有机肥中解磷细菌对难溶性磷肥(磷矿粉)的有效化作用.试验结果显示,在肥力较低的惠州菜园土上,施用含解磷细菌的生物有机肥能促进菜心的生长,与施用等养分含量的磷矿粉及不含解磷细菌的生物有机肥比较,提高其地上部生物量7.0和4.2倍,单季菜心对氮的吸收利用效率提高了32.5%和28.8%,对磷的吸收利用效率提高了8.6%和7.9%,对钾的吸收利用效率提高了54.4%和48.8%.施用含解磷细菌的生物有机肥还可以提高蔬菜植后速效磷的含量,比磷矿粉处理及不含磷细菌生物有机肥处理分别提高19.5及11.4 mg/kg.
A pot experiment was performed in low fertility vegetable garden soils taken from Huizhou of Guangdong Province to study the availability effect on sparingly soluble phosphates fertilizer（phosphorus rock） by using equality nutrient phosphorus rock,w=20% phosphorus rock plus bio-organic fertilizer without phosphate-dissolving bacteria（PDB）,and w=20% phosphorus rock plus bio-organic fertilizer with PDB.The experiment results showed that bio-organic fertilizer with PDB can significantly increase the growth of canliflower,which correspondingly increased 7.0 and 4.2 times of shoot biomass,the N uptake and utilization efficiency of single seasonal canliflower to 32.5% and 28.8%,P uptake and utilization efficiency to 8.6% and 7.9%,K uptake and utilization efficiency to 54.4% and 48.8% than that of the equality nutrient phosphorus rock and bio-organic fertilizer without PDB.Furthermore,the bio-organic fertilizer with PDB can also improve the soluble phosphate contents to 19.5 and 11.4mg/kg after vegetable harvests as compared to the treatments of phosphate rock powder and bio-organic fertilizer without PDB.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2007年第4期38-41,共4页
Journal of South China Agricultural University
基金
广东省农业攻关项目(2002C20504
2004B20201020)
广州市科技攻关项目(2005Z2-E0251)
广州市番禺区科技项目(2004-z-07-1)
关键词
菜心
生物有机肥
解磷细菌
难溶性磷
有效化作用
canliflower
bio-organic fertilizer
phosphate-dissolving bacteria
sparingly soluble phosphates
validity
