解磷菌株P34对娃娃菜生长及土壤环境的影响
毕路然 , 李潇潇 , 杨宏羽 , 师桂英 , 侯磊 , 贺甜甜
甘肃农业大学学报 ›› 2025, Vol. 60 ›› Issue (02) : 152 -162.
解磷菌株P34对娃娃菜生长及土壤环境的影响
Effect of phosphate-degrading bacterial strain P34 on growth and soil environment of baby Chinese cabbage
目的 以娃娃菜(baby Chinese cabbage)作为研究对象,研究解磷菌株P34对蔬菜作物生长发育以及植株根际土壤微生态环境的影响,以评估该菌株的应用价值。 方法 设计双因素试验(因素A为解磷菌,因素B为营养液磷元素),测定娃娃菜植株生长指标、基质理化性状指标和微生物数量的变化。 结果 该菌株对娃娃菜幼苗生长具有显著的促生作用,其作用效应与基质磷元素含量水平相关。解磷菌处理,提高了基质速效磷、碱解氮、速效钾含量和基质酶活性;同时使基质中可培养细菌数量增加,可培养真菌数量下降。与对照A0B0(基质不添加磷元素和菌液)相比,处理A1B0(D值为1的菌液与无磷霍格兰营养液配施)速效磷含量显著提高,处理A2B0(D值为1.5的菌液与无磷霍格兰营养液配施)土壤磷酸酶活性在各处理中最高,分别比A0B0显著增加了225%和14.73%。主成分分析表明,A1B1(D值为1的菌液与含磷50%霍格兰营养液配施)处理的植株生长和土壤养分变化指标的综合评价评分第1。 结论 解磷菌株P34处理可有效提高土壤肥力水平,促进植物生长发育,具有重要的应用价值。
Objective Using baby Chinese cabbage as a research object,the effects of phosphate-solubilizing bacterial strain P34 on the growth and development of vegetable crops and the micro-ecological environment of the plant rhizosphere soil were studied to evaluate the application value of this strain. Method A two-factor experiment was designed to determine the changes in plant growth indicators,substrate physical and chemical properties,and microbial biomass of baby cabbage,using factor A as the phosphorus dissolving bacteria and factor B as the phosphorus element in the nutrient solution. Result This strain has a significant growth-promoting effect on baby cabbage seedlings,and its effect is related to the level of phosphorus in the substrate.Treatment with phosphate-solubilizing bacteria increased the levels of available phosphorus,alkaline nitrogen,available potassium and substrate enzyme activity in the substrate; at the same time,the number of cultivable bacteria in the substrate increased,while the number of cultivable fungi decreased.Compared to control A0B0 (no addition of phosphorus elements and bacterial solution to the substrate),the available phosphorus content of treatment A1B0 (combined application of bacterial solution with an D value of 1 and phosphorus-free Hoagland nutrient solution) was significantly increased.The soil phosphatase activity of treatment A2B0 (combined application of bacterial solution with an D value of 1.5 and phosphorus-free Hoagland nutrient solution) was the highest among all treatments,significantly increasing by 225% and 14.73%,respectively.Principal component analysis showed that the comprehensive evaluation score of plant growth and soil nutrient changes in A1B1 (bacterial solution with D=1 and 50% phosphorus containing Hoagland nutrient solution) ranked first. Conclusion The phosphate solubilizing bacteria strain P34 can effectively improve soil fertility and promote plant growth,and it has important application value in crop production.
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甘肃省重点研发计划项目(22YF7NA108)
国家自然科学基金项目(31860549)
兰州市科技计划项目(2017-4-95)
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