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首页> 外文期刊>PLoS One >Long-term effects of maize straw return and manure on the microbial community in cinnamon soil in Northern China using 16S rRNA sequencing
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Long-term effects of maize straw return and manure on the microbial community in cinnamon soil in Northern China using 16S rRNA sequencing

机译：玉米秸秆返回和粪肥对中国北部肉体土壤中的玉米秸秆返回和粪肥的长期影响利用16S rRNA测序

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Excessive use of chemical fertilizers in agricultural practices have demonstrated a significant impact on microbial diversity and community in soil by altering soil physical and chemical properties, thereby leading to a certain degree of soil salinization and nutritional imbalances. As an organic amendment, maize straw has been widely used to improve soil quality; however, its effect on the soil bacterial community remains limited in Calcarie-Fluvie Cambisols soil in semi-humid arid plateau of North China. In the present experiment, we investigated the effects of continuous straw utilization and fertilization on bacterial communities in Shouyang, Shanxi province, China. Soil samples were collected from 5 different straw utilization and fertilization modes in the following ways: straw mulching (SM), straw crushing (SC), cattle manure (CM), in which way straw is firstly used as silage and then organic fertilizer, control with no straw return (NSR), and control without fertilizers (CK), same amount of N+P fertilizer was applied to the regimes except CK. High-throughput sequencing approaches were applied to the V3-V4 regions of the 16S ribosomal RNA for analysis of the bacterial abundance and community structures. Different long-term straw returning regimes significantly altered the physicochemical properties and bacterial communities of soil, among which CM had the most significant effects on soil fertility and bacterial diversity. Proteobacteria , Actinobacteria , Chloroflexi , Acidobacteria , and Gemmatimonadetes were consistently dominant in all soil samples, and Redundancy analysis (RDA) showed significant association of total nitrogen (TN), total phosphorus (TP) and available potassium (AK) with alternation of the bacterial community. Cattle manure had the most beneficial effects on soil fertility and bacterial diversity among different straw utilization and fertilization modes.
机译：通过改变土壤物​​理和化学性质，过度使用农业实践中的化学肥料对土壤中的微生物多样性和群落进行了重大影响，从而导致一定程度的土壤盐渍化和营养不平衡。作为有机修正，玉米秸秆已被广泛用于改善土壤质量;然而，其对土壤细菌群落的影响仍然有限于中国华北半湿润干旱高原的钙菲利雪地虫土壤。在目前的实验中，我们研究了持续秸秆利用和施肥对山西省施阳细菌社区的影响。以下列方式从5种不同的秸秆利用和施肥方式收集土壤样品：秸秆覆盖（SM），稻草压碎（SC），牛粪（CM），其中稻草首先用作青贮饲料，然后有机肥料，控制没有吸管返回（NSR），并且没有肥料的控制（CK），相同的N + P肥料应用于除CK之外的制度。将高通量测序方法应用于16S核糖体RNA的V3-V4区域，用于分析细菌丰度和群落结构。不同的长期稻草返回制度显着改变了土壤的物理化学性质和细菌群落，其中CM对土壤肥力和细菌多样性具有最大的影响。在所有土壤样品中始终如一地占据所有土壤样品，冗余分析（RDA）的促成分析（RDA）与细菌的交替表现出显着的氮（TN），总磷（TP）和可用钾（AK）的显着分析（RDA）。社区。牛粪对不同秸秆利用和施肥方式的土壤肥力和细菌多样性具有最有益的影响。

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