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Changes in the Physical, Chemical, and Bacterial Community Characteristics of Soil in Response to Short-Term Combined Organic-Inorganic Fertilizers in a Dry Direct-Seeded Paddy Field

文献类型： 外文期刊

作者： Guo, Xiaohong 1 ; Zou, Bing 1 ; Xu, Lingqi 4 ; Zhang, Jianing 1 ; Zheng, Guiping 1 ; Wang, Haize 1 ; Yin, Dawei 1 ; Li, Hongyu 1 ; Zhang, Wenzhong 5 ; Lv, Yandong 1 ; Zhao, Minghui 5 ;

作者机构： 1.Heilongjiang Bayi Agr Univ, Coll Agr, Daqing 163319, Peoples R China

2.Heilongjiang Prov Key Lab Modern Agr Cultivat & C, Daqing 163319, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Low Carbon Green Agr Northeastern China, Daqing 163319, Peoples R China

4.Heilongjiang Acad Agr Sci, Rice Res Inst, Jiamusi 154026, Peoples R China

5.Shenyang Agr Univ, Collaborat Innovat Ctr Genet Improvement & High Q, Shenyang 110866, Peoples R China

关键词： bacterial community; combined fertilizer; dry direct-seeded rice; microbial diversity; soil properties

期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）

ISSN：

年卷期： 2022 年 12 卷 11 期

页码：

收录情况： SCI

摘要： Dry direct-seeded rice cultivation is a simple and labor-saving planting method wherein the combined application of organic and inorganic fertilizers can improve yield. However, the effects of combined fertilizers on soil properties and bacteria in dry direct-seeded rice paddy soil are unclear. Here, four treatments, conventional fertilization (NPK), seaweed bio-organic fertilizer + NPK, Jishiwang bio-organic fertilizer + NPK, and attapulgite organic fertilizer + NPK applied for three consecutive years were tested to explore their effects on soil physical, chemical, and bacterial community characteristics in a dry direct-seeded rice paddy field. The combined fertilizers increased alkaline hydrolysis-nitrogen and available potassium while decreasing the bulk density and pH; in addition, a marked increase in the relative abundance of soil macroaggregates (>5 mm) and clay particles and a decrease in that of sand was observed. Urease and neutral phosphatase activities were the highest with the Jishiwang organic fertilizer + NPK, whereas invertase and catalase activities were the highest with attapulgite organic fertilizer + NPK. All combined fertilizers considerably increased the bacterial richness index (ACE) and Chao index; Jishiwang bio-organic fertilizer + NPK also increased the Simpson index, whereas the seaweed bio-organic fertilizer + NPK reduced it. Proteobacteria and Acidobacteria accounted for 54.25-70.49% of the total bacterial relative abundance. The relative abundance of Verrucomicrobia, Chloroflexi, Firmicutes, and Nitrospirae increased with the combined fertilizers. The correlation network analysis showed predominant antagonistic relationships. A redundancy analysis demonstrated that total nitrogen, soil organic matter, urease, and invertase were the main environmental factors affecting bacterial composition. Combined fertilizers may improve soil physical and chemical properties, fertility, and bacterial richness.

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