研究表明,在土壤水分含量较高,有机质含量2.25％～2.35％的盆、框栽条件下,氟乐灵处理土壤后随浓度增加而药害加重,高浓度处理幼苗出现枯死。对大豆和共生固氮均有一定抑制作用。成熟大豆的株高、株重、英数、株粒数及粒重均低于对照。对土壤中细菌、放线菌和霉菌的生长繁殖也有一定抑制作用。 The results showed that under the conditions of pots and boxes with high soil moisture and organic matter content of 2.25% -2.35%, trifluralin treatment increased the phytotoxicity and increased the mortality of the seedlings under high concentration treatment. Soybean and symbiotic nitrogen fixation have a certain inhibitory effect. Mature soybean plant height, plant weight, number of England, grain number and grain weight were lower than the control. On the soil bacteria, actinomycetes and mold growth and reproduction also have some inhibitory effect.