WU Zhi-hai,LIU Jing-jing,YANG Mei-ying,et al.Effects of Exogenous Phosphate-Solubilizing Bacteria on Growth Characteristics of Soybean Under Different Soil Condition[J].Soybean Science,2017,36(01):78-86.[doi:10.11861/j.issn.1000-9841.2017.01.0078]
外源溶磷菌对不同土壤条件下大豆生长特性的影响
- Title:
- Effects of Exogenous Phosphate-Solubilizing Bacteria on Growth Characteristics of Soybean Under Different Soil Condition
- Keywords:
- Phosphate-solubilizing bacteria(PSB); Soybean; Salt-alkaline soil; Growth promoting effect
- 文献标志码:
- A
- 摘要:
- 为了明确溶磷菌在多种土壤中的应用效果,探讨了两株溶磷菌对黑土及盐碱土种植大豆的促生效应。采用盆栽试验分析了不同处理对大豆光合作用、渗透调节物质含量、生物量、氮磷吸收及产量的影响。结果表明:加菌处理可增加植株Pn,显著降低R6、R8两时期叶片可溶性蛋白、可溶性糖及游离氨基酸含量,增加R2~R8时期大豆株高和根干重,混合土壤中加菌处理也可提高植株地上部分氮、磷及植株全磷、全氮含量。添加wj1和混合菌处理的植株干重优于添加wj3的处理。黑土加混合菌可显著提高大豆R2期叶片WUE,增加V3、R2和R8这3个时期大豆地上、地下部分氮、磷及植株全氮、全磷的含量。黑土加wj1与混合土壤加菌处理的大豆株荚数、总粒数、单株粒重及百粒重均高于未加菌处理。添加外源溶磷菌,对黑土及盐碱土栽培大豆均有不同程度的促生效果,能明显增强大豆在混合盐碱土壤中的适应性,增加植株生物量、氮磷吸收量和产量,且混合菌处理对大豆的促生效应优于wj1及wj3单一菌株处理。
- Abstract:
- In order to determine the application effect of phosphatesolubilizing bacteria(PSB) in different soils, the growth promoting effects of two PSB on soybean in the black soil and saline alkali soil were studied. The photosynthesis, osmotic adjustment substances, biomass, N and P uptake and yield of soybean were investigated with a pot experiment. By the addition of PSB, Pn was increased, the content of leaf soluble protein, soluble sugar and free amino acid were significantly reduced at R6 and R8, plant height and root dry weight of soybean were increased from R2 to R8. The plant dry weight treated with wj1 and mixed bacteria was better than that of wj3. The WUE of R2 was significantly improved, the content of total N and P of shoot, root and plant were increased at the stage of V3, R2 and R8 by adding the mixed PSB into black soil. The total of N and P of shoot and plant growing in the mixed soil were also increased after inoculation with PSB. The pod number, total grain number, grain weight per plant and 100seed weight per plant of black soil with wj1 and mixed soil with PSB were higher than that without bacteria. As a result, adding exogenous PSB could improve photosynthesis and enhance adaptability of soybean in the mixed salt alkaline soil, thereby increase plant biomass, nitrogen and phosphorus uptake and crop yield. The growth promoting effect of mixed PSB was better than single strain of wj1 or wj3.
参考文献/References:
[1]王光华, 周可琴, 金剑, 等. 不同碳源对三种溶磷真菌溶解磷矿粉能力的影响[J]. 生态学杂志, 2004, 23(2): 32-36.(Wang G H, Zhou K Q, Jin J, et al. Effect of different C sources on the solubilization of rock phosphate by three phosphate solubilizing fungi[J]. Chinese Journal of Ecology, 2004, 23(2): 32-36.
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备注/Memo
基金项目:国家自然科学基金(31201687)。