[1]LI Fengxia,ZHAO Ying.Effect of Nitrogen Fertilizer Reduction With Microbial Inoculants on Broccoli Production and the Influence of the Soil Microbial Characteristics[J].Research of Soil and Water Conservation,2017,24(02):94-100.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 02
Page number:
94-100
Column:
Public date:
2017-04-28
- Title:
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Effect of Nitrogen Fertilizer Reduction With Microbial Inoculants on Broccoli Production and the Influence of the Soil Microbial Characteristics
- Author(s):
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LI Fengxia, ZHAO Ying
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Agriculture Resource and Environment Institute of Ningxia Academy of Agriculture and Forestry Science, Yinchuan 750002
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- Keywords:
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broccoli; nitrogen fertilizer reduction; microbial inoculants; microbial diversity; microbial number
- CLC:
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S154.2
- DOI:
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- Abstract:
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The effect of nitrogen fertilizer reduction with microbial inoculants on broccoli production and the impact of the soil microbial characteristics have been studied using biolog microbial identification system and plate dilution methods. The results indicate that the total numbers of soil bacteria, actinomyces and microbial quantity of T4(2/3 times of N fertilizer + microbial fertilizer treatment), T5 (3/4 times of N fertilizer + microbial fertilizer treatment)and T6 (normal amount of N fertilizer + microbial fertilizer treatment) treatments increase by 57.6%~321.54%, 66.81%~83.62% and 135.40%~232.07% and the number of soil fungi reduces by 34.0 841.80%. Compared with the control, all the fertilizer treatments increase the proportion of the total number of microorganisms of soil bacteria, while the proportion of the fungi and actinomycetes is reduced, the effects of T4 and T5 treatments are the most significant. T4, T5, and T6 treatments significantly increase the soil microbiota total carbon source utilization ability. T4, T5 and T6 treatments significantly improve the carbon source metabolism activity of soil microbial community on carbohydrate, acid, polymer and amino acids. T3(microbial fertilizer) treatment significantly increases the carbon source metabolism activity of soil microbial community on carboxylic acid and polymer. T5 and T6 treatments have the same effect on the effect of increasing broccoli production and biomass, the broccoli production increases by 12.35% and 10.75% respectively, underground stem biomass increases about 57%, T2 (normal amount of N fertilizer) and T4 treatments increased broccoli yields by about 5%.