不同解磷菌群对复垦土壤磷素形态及油菜产量的影响

发布时间：2018-06-01 04:12

本文选题：解磷菌群 + 土壤有效磷　；参考：《华北农学报》2017年06期

【摘要】：为培肥复垦土壤、提高土壤潜在的磷素有效性,采用盆栽试验研究施用不同浓度单一及混合解磷菌群对复垦土壤磷形态以及油菜产量、吸磷量、叶绿素含量的影响。结果表明,与不施解磷菌群处理相比,施入不同浓度的解磷菌群能够提高土壤有效磷含量、碱性磷酸酶活性及土壤全磷的含量,其中,效果最好的是解磷细菌群,较不施解磷菌群处理,土壤有效磷含量、碱性磷酸酶活性及土壤全磷含量分别提高21.69%~50.42%,7.17%~25.45%,2.38%~9.52%,且在中浓度4 m L/盆处理下含量达到最大;施入解磷菌群能够提高油菜的产量和叶绿素含量,解磷细菌群作用效果最显著,分别较不施解磷菌群处理提高4.13%~41.76%,3.60%~17.90%,在中浓度4 m L/盆处理下油菜的产量和叶绿素含量达到最大,油菜吸磷量变化不显著;不同解磷菌群处理对复垦土壤Hedley无机磷形态含量也有影响;不同解磷菌群处理的土壤H_2O-Pi、NaHCO_3-Pi、NaOH-Pi含量均高于CK处理,残渣态-P、HCl-Pi含量低于CK处理,其中,作用最显著的是中浓度4 m L/盆的解磷细菌群处理;解磷细菌群处理的土壤H_2O-Pi,NaHCO_3-Pi,NaOH-Pi含量均高于不施解磷菌群处理。施入解磷菌群可以增加土壤H_2O-Pi、NaHCO_3-Pi、NaOH-Pi含量,降低HCl-Pi、残渣态-P的含量。综合分析结果显示,中浓度的解磷细菌群处理可以促进土壤磷素的活化,提高土壤有效磷含量,同时可显著提高作物叶绿素含量及其产量,结果可为矿区复垦土壤磷肥合理配施提供理论依据。
[Abstract]:In order to improve the potential phosphorus availability of soil, pot experiments were carried out to study the effects of different concentrations of single and mixed phosphate bacteria on the yield, phosphorus uptake and chlorophyll content of rape in reclaimed soil. The results showed that the available phosphorus content, alkaline phosphatase activity and total phosphorus content in soil could be increased by adding different concentrations of phosphorus bacteria compared with those without phosphorus treatment. The available phosphorus content, alkaline phosphatase activity and total phosphorus content in soil were increased by 21.69 ~ 50.42% and 7.177.17 ~ 25.45% ~ 2.38% ~ 2.38%, respectively, and reached the maximum under the medium concentration of 4 mL / pot treatment. The application of phosphorus releasing bacteria could increase the yield and chlorophyll content of rape, and the effect of phosphorus releasing bacteria was the most significant, which increased 4.131.763.60% and 17.90%, respectively, compared with the treatment without phosphorus solution. The yield and chlorophyll content of rape reached the maximum under the medium concentration of 4 mL / pot. The phosphorus uptake of rapeseed was not significant, the inorganic phosphorus content of Hedley was also affected by different P soluble microflora treatments, the content of soil H2O-PiGN NaHCO3-PiGN NaOH-Pi was higher than CK treatment, and the content of residual -PHHCl-Pi was lower than CK treatment. The most significant effect was the treatment of 4 mL / pot solution of phosphorus bacteria, and the content of H _ 2O-PiX NaHCO _ (3-PiN) NaOH-Pi was higher than that of the treatment without phosphorus application. The application of phosphorus solution bacteria could increase the content of NaHCO-Pi in soil and decrease the content of HCl-Piand and residual -P in soil. The results of comprehensive analysis showed that the treatment of medium concentration of bacteria could promote the activation of phosphorus in soil, increase the content of available phosphorus in soil, and increase the chlorophyll content and yield of crops. The results can provide theoretical basis for rational application of phosphorus fertilizer in reclaimed soil in mining area.
【作者单位】：山西农业大学资源环境学院;
【基金】：国家自然科学基金项目(31272257)
【分类号】：S158;S565.4

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