关键词: 生态环境, 野生大豆, 盐腺, 渭北旱塬, 土壤水分, 水肥管理模式, 苹果园

Abstract: Observations on two ecotypes of Glycine soja under scanning electronic microscope showed that the ecotype growing in saline ecological environment had salt glands on the surface of its stems and leaves, which distributed at intercellular layer,in the shape of ball and with a handle at the base. Younger salt glands secreted salt ions through their secretary pores, and mature ones did it by breaking themselves. The ecotype growing on black soil did not have any salt glands on the surface of its stems and leaves, and the surface was smooth. Therefore, the ecotypes of G.soja growing in different ecological environments displayed an obvious difference in their microstructure.

Key words: Ecological environment, Glycine soja, Salt glands, water and fertilizer management, apple orchard, soil water., Weibei dryland