Application of nanocompounds along with plant growth promoting rhizobacteria is gaining attention to improve agriculture productivity. In the present study, attempts have been made to observe the impact of nanosilicon dioxide (10 mg L⁻¹) and two plant growth promotory bacteria (PC1-MK106029) and (PC4-MK106024) on the growth of Zea mays and its rhizosphere in a pot experiment. Combined treatment of bacterial consortium and nanosilicon dioxide enhanced average plant height and number of leaves over control in maize after 30 days of sowing. Similarly, percent enhancement of total chlorophyll, carotenoid, sugar, soluble protein, phenol and flavonoid content was 106, 307, 116, 57, 159 and 132 respectively over control in maize leaves in the same treatment. Treated plants showed significant increase of 29.4 and 73.9% in catalase and peroxidase activities respectively over control. Physicochemical and biochemical parameters of soil health were also improved in the soil treated with PGPR and nanosilicon dioxide. An increase of 1.5–2 fold in the activities of fluorescein diacetate, dehydrogenase and alkaline phosphatase was observed in the treated soil as compared to control. Our results revealed that inoculation of beneficial microorganisms in combination with nanosilicon dioxide is an effective method for enhancing physicochemical and biochemical parameters of the soil which are responsible for increased plant growth and soil fertility by increasing enzyme activities of microbes. This approach presents an alternative to pesticides, fertilizers and GM crops to enhance crop productivity.

纳米化合物与促进植物生长的根际细菌的应用越来越受到关注，以提高农业生产力。在本研究中，已尝试观察纳米二氧化硅（10 mg L ^-1）和两种植物生长促进细菌（PC1-MK106029）和（PC4-MK106024）对玉米生长的影响及其根际盆栽试验。播种 30 天后，细菌聚生体和纳米二氧化硅的联合处理提高了玉米的平均株高和叶片数，超过对照。同样，在相同处理下，玉米叶片的总叶绿素、类胡萝卜素、糖、可溶性蛋白、酚和黄酮类含量的百分比分别比对照提高了 106、307、116、57、159 和 132。与对照相比，处理过的植物的过氧化氢酶和过氧化物酶活性分别显着提高了 29.4% 和 73.9%。在用 PGPR 和纳米二氧化硅处理的土壤中，土壤健康的理化和生化参数也得到了改善。与对照相比，在处理过的土壤中观察到荧光素二乙酸酯、脱氢酶和碱性磷酸酶的活性增加了 1.5-2 倍。我们的结果表明，将有益微生物与纳米二氧化硅结合接种是提高土壤理化和生化参数的有效方法，这些参数通过增加微生物的酶活性来促进植物生长和土壤肥力。这种方法提供了一种替代农药、化肥和转基因作物以提高作物生产力的方法。