PDF(Pubmed)
Abstract：
Plant growth-promoting rhizobacteria (PGPR) are known to have the effect of promoting plant growth. In this paper, three PGPR strains were selected from the previous work, which had plant growth-promoting activities such as phosphate solubilization, nitrogen fixation, phosphorus mobilization, etc. These strains named FJS-3(Burkholderia pyromania), FJS-7(Pseudomonas rhodesiae), and FJS-16(Pseudomonas baetica), respectively, were prepared into solid biological agents. Three widely planted commercial crops (tea plant, tobacco, and chili pepper) were selected for PGPR growth promotion verification. The results showed that the new shoots of tea seedlings under PGPR treatment were much more than the control. We also used tobacco, another important crop in Guizhou, to test the growth-promoting effect of individual bacteria, and the results showed that each of them could promote the growth of tobacco plants, and FJS-3(Burkholderia pyrrocinia) had the best effect. In addition, we carried out experiments on tobacco and pepper using multi-strain PGPR, the tobacco plants\' height, fresh, and root weight increased by 30.15 %, 37.36 %, and 54.5 %, respectively, and the pepper plants\' increased by 30.10 %, 56.38 % and 43.18 %, respectively, which both showed significantly better effects than that of a single strain. To further test the field performance, field trials were carried out in a mature Longjing43 tea plantation in Guizhou. There were four treatments: no fertilization (T1), combined application of PGPR biological agent and compound fertilizer (T2), only application of PGPR (T3), and only application of compound fertilizer (T4). In terms of yield, grouped with or without PGPR, there was a 15.38 % (T2:T4) and 92.31 % (T3:T1) increase between them, respectively. The tea\'s yield and tea flavor substances such as tea polyphenols, caffeine, and theanine were detected, and the T2 showed the most significant positive effect on both sides. Especially, an important indicator of Matcha green tea is the color, chlorophyll content was then tested, and PGPR application increased it and improved the appearance. All these results demonstrated that the PGPR we screened could significantly promote plant growth and quality improvement, and had good application potential in crop planting, which could contribute to environmental protection and economic growth.
摘要：
已知植物生长促进根际细菌(PGPR)具有促进植物生长的作用。在本文中,从先前的工作中选择了三个PGPR菌株，具有促进植物生长的活性，如磷酸盐溶解，固氮,磷动员，等。这些菌株命名为FJS-3(Burkholderiapyromania)，FJS-7（罗得西亚假单胞菌），和FJS-16（假单胞菌），分别,制备成固体生物制剂。三种广泛种植的商业作物(茶树，烟草,和辣椒）被选择用于PGPR生长促进验证。结果表明，PGPR处理下茶苗的新芽比对照多。我们还使用烟草，贵州的另一种重要作物，为了测试单个细菌的生长促进作用，结果表明，它们都能促进烟草植物的生长，FJS-3(Burkholderiapyrorocinia)效果最好。此外,我们使用多菌株PGPR对烟草和辣椒进行了实验，烟草植物的高度，新鲜,根重增加了30.15％，37.36%,和54.5%，分别,辣椒植株增加了30.10%，56.38%和43.18%，分别,两者均显示出比单个菌株明显更好的效果。为了进一步测试现场性能，在贵州某成熟的龙井43茶园进行了田间试验。有四种处理：不受精（T1），PGPR生物制剂与复合肥联合施用(T2)，仅应用PGPR（T3），只施复合肥(T4)。在收益率方面，分组有或没有PGPR，它们之间增加了15.38％（T2：T4）和92.31％（T3：T1），分别。茶的产量和茶的风味物质如茶多酚，咖啡因,和茶氨酸被检测到，T2对两侧均表现出最显著的正效应。尤其是,抹茶绿茶的一个重要指标是颜色，然后测试叶绿素含量，和PGPR的应用增加了它并改善了外观。所有这些结果表明，我们筛选的PGPR可以显著促进植物生长和品质改善，在农作物种植中具有良好的应用潜力，这可能有助于环境保护和经济增长。
