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The effects of chemical and organic fertilizer usage on rhizosphere soil in tea orchards

机译：化肥和有机肥用量对茶园根际土壤的影响

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摘要

Sustainable agriculture is an important global issue. The use of organic fertilizers can enhance crop yield and soil properties while restraining pests and diseases. The objective of this study was to assess the effects of long-term use of chemical and organic fertilizers on tea and rhizosphere soil properties in tea orchards. Inductively coupled plasma mass spectrometry (ICP-MS) and high-throughput sequencing technology analyses were used to investigate heavy metals content and bacterial composition in rhizosphere soils. Our results indicated that organic fertilizer treatment significantly decreased Cu, Pb and Cd contents in rhizosphere soil sample. The results also showed that treatment with organic fertilizer significantly decreased the contents of Cd, Pb and As in tea leaves. Furthermore, organic fertilizer significantly increased the amino acids content of tea and the pH of the soil. The use of organic fertilizer significantly increased in the relative abundance of Burkholderiales, Myxococcales, Streptomycetales, Nitrospirales, Ktedonobacterales, Acidobacteriales, Gemmatimonadales, and Solibacterales, and decreased the abundance of Pseudonocardiales, Frankiales, Rhizobiales, and Xanthomonadales. In conclusion, organic fertilizer can help to shape the microbial composition and recruit beneficial bacteria into the rhizosphere of tea, leading to improved tea quality and reduced heavy metals content in rhizosphere soil and tea leaves.
机译：可持续农业是一个重要的全球性问题。有机肥料的使用可以提高作物产量和土壤特性，同时抑制病虫害。这项研究的目的是评估长期使用化学和有机肥料对果园茶和根际土壤特性的影响。电感耦合等离子体质谱（ICP-MS）和高通量测序技术分析用于调查根际土壤中的重金属含量和细菌组成。我们的结果表明，有机肥处理可显着降低根际土壤样品中的Cu，Pb和Cd含量。结果还表明，有机肥料处理可显着降低茶叶中Cd，Pb和As的含量。此外，有机肥料显着提高了茶的氨基酸含量和土壤的pH值。有机肥料的使用显着增加了伯克霍尔德氏菌，粘球菌，链霉菌，硝化螺旋藻，角膜细菌，酸杆菌，芽孢杆菌和沙门氏菌的相对丰度，并降低了假心动菌，弗兰克里亚莱斯，根瘤菌和黄单胞菌的丰度。总而言之，有机肥料可以帮助塑造微生物的组成并将有益细菌吸收到茶的根际中，从而改善茶的质量并减少根际土壤和茶叶中的重金属含量。

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