In solonchak soils, the activity of the three soil enzymes in the rhizosphere is generally higher than in bulk soils while that in cultivated gray-desert soils are lower.

• 结果表明：过氧化氢酶、脲酶和蛋白酶在两种土壤的植物根际表现出相反的变化，荒漠盐土中，根际土3种酶的活性均高于非根际土；