Li Zuren, Han Jincai, Bai Haodong, Peng Di, Wang Lifeng, Bai Lianyang
Hunan Provincial Key Laboratory for Biology and Control of Weeds, Hunan Academy of Agricultural Sciences, Changsha, 410125, China.
Collaborative Innovation Center for Field Weeds Control, Hunan University of Humanities, Science and Technology, Loudi, 417000, Hunan, China.
AMB Express. 2021 May 31;11(1):79. doi: 10.1186/s13568-021-01241-5.
Application of a novel bioorganic fertilizer (BIO) has been effectively used to inhibit weeds in rice paddies. To identify changes in soil bacterial community and enzymes in response to BIO treatments, field experiments were carried out in five major rice-growing areas in China. The dominant phylogenetic groups recorded included Proteobacteria, Actinobacteria, Bacteroidetes, Firmicutes and Acidobacteria. Anaeromyxobacter, Bacteroides, Bifidobacterium, Escherichia- Shigella, Geobacter and Haliangium were significantly different between BIO-treatment and untreated control and aided in general function (R), amino acid transport, metabolism (E) and transcription (K) clusters. The soil chemical properties and enzyme activities were less affected by BIO at these study sites. RDA analysis showed that soil bacterial community had a significant positive correlations among northern latitude, eastern longitude, exchangeable K, total K, total P, soil pH, and total N, except for organic matter, hydrolytic N and extractable P. Overall, our work showed that application of BIO does not alter the main community structure and functional diversity of soil bacteria in rice paddies and should be encouraged for use as a sustainable weed management strategy.
一种新型生物有机肥（BIO）已被有效地用于抑制稻田杂草。为了确定土壤细菌群落和酶对BIO处理的响应变化，在中国五个主要水稻种植区进行了田间试验。记录的主要系统发育类群包括变形菌门、放线菌门、拟杆菌门、厚壁菌门和酸杆菌门。厌氧粘细菌属、拟杆菌属、双歧杆菌属、大肠杆菌-志贺氏菌属、地杆菌属和海栖热袍菌属在BIO处理组和未处理对照组之间存在显著差异，并在一般功能（R）、氨基酸转运、代谢（E）和转录（K）簇中发挥作用。在这些研究地点，土壤化学性质和酶活性受BIO的影响较小。冗余分析（RDA）表明，除了有机质、水解性氮和速效磷外，土壤细菌群落与北纬、东经、交换性钾、全钾、全磷、土壤pH值和全氮之间存在显著正相关。总体而言，我们的研究表明，施用BIO不会改变稻田土壤细菌的主要群落结构和功能多样性，应鼓励将其作为一种可持续的杂草管理策略使用。
