关键词: 盐土, 防治, 白蚁, 阻杀, 致死, 抗穿越

Abstract: Objective To study the type and concentration of saline soil that can effectively control termites. Methods Experiments were performed to investigate the retarding, lethal, and anti?penetrating effects of different types and concentrations of saline soil on termites. Results The saline soils prepared from coarse salt, fine salt, and mixed salt retarded the invasion of termites, and the retarding effect was positively correlated with the concentration of salt in soil; among the three saline soils, what was prepared from mixed salt had the worst effect. In the saline soil with a concentration of at least 0.4%, all individuals of Coptotermes formosanus and Odontotermes formosanus died, on average, within 25.33 d and 5.67 d, respectively. In 0.4% saline soil, C. formosanus workers built an average 28.47 cm long tunnel and finally died from exposure to saline soil. Conclusion Saline soil has retarding, lethal, and anti?penetrating effects on termites. The saline soils prepared from coarse salt and fine salt have a better retarding effect on termites than that prepared from mixed salt, and the retarding effect is positively correlated with the concentration of salt in soil. Moreover, 0.4% saline soil has good lethal and anti?penetrating effects on termites.

Key words: Saline soil, Control, Termite, Retarding, Lethal, Anti?penetrating