| Effects of bio\|fertilizer on soil nutrients and microbial functional diversity in peach orchard |
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| DOI：10.7606/j.issn.1000-7601.2020.06.13 |
| Key Words: soil nutrients of peach orchard bio\|fertilizer soil microorganism functional diversity |
| Author Name | Affiliation | | YU Huili | Institute of Zhengzhou Fruit Research, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China | | XU Guoyi | Institute of Zhengzhou Fruit Research, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China | | XU Bianbian | Institute of Zhengzhou Fruit Research, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China | | YUAN Yujie | Institute of Zhengzhou Fruit Research, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China | | SHAO Wei | College of Forestry, Henan Agricultural University, Zhengzhou, Henan 450002, China | | WANG Xinwei | Institute of Zhengzhou Fruit Research, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China | | ZHU Gengrui | Institute of Zhengzhou Fruit Research, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China | | LU Zhenhua | Institute of Zhengzhou Fruit Research, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China | | SI Peng | Institute of Zhengzhou Fruit Research, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450009, China |
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| Abstract: |
| To explore the effects of bio\|fertilizer on soil nutrient and microbial functional diversity of peach soil, the soil under different fertilization treatments were used as test materials. Different rates of biological bacterial fertilizer T1 (200 kg·667m-2), T2 (300 kg·667m-2), T3 (500 kg·667m-2), and T4 (1 000 kg·667m-2) were set, with chicken manure as CK (2 000 kg·667m-2). The results indicated that with increasing the amount of bio\|fertilizer, the soil pH, organic matter, ammonia N, available P, available K content, average well color development (AWCD), microbial diversity index, and utilization intensity of six types of carbon sources showed an upward trend and then decreased, while the NO-3-N content showed a downward trend. In 0~20 cm soil, the available P content of 200 kg·667m-2 treatment significantly increased by 53.98% compared with that of the control (P＜0.05), while the difference between 200 kg·667m-2 and 300 kg·667m-2 was not significant. The soil microbial community of 300 kg·667m-2 had the highest utilization intensity of carboxylic acid compounds, which was significantly increased by 22.67% compared with that of the control. In the 20~40 cm soil layer, soil available P, available K content, microbial diversity index (Simpson index D), and microbial utilization intensity of carbohydrates treated with 300 kg·667m-2 were significantly increased by 33.49%, 129.61%, 0.22%, and 18.06% compared with CK (P＜0.05). Redundant analysis revealed that the utilization of amino acid compounds by the soil microbial community was significantly positively correlated with organic matter, and the correlation coefficient was 0.68. In the principal component analysis, the 300 kg·667m-2 comprehensive score was the highest, with 0~20 cm soil layer and 20~40 cm soil layer being 2.42 and 1.36, respectively. Therefore, boi\|fertilizer can increase peach soil microbial activity, functional diversity, utilization intensity of carbon sources by microorganisms and soil nutrient content, and 300 kg·667m-2 was the best. |
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