在土培条件下,研究了对过量硼毒害敏感和强抗性的两类作物吸收累积硼的规律,以及SOD、CAT、POX 3种保护酶括性的差异。结果表明:对过量硼毒害抗性,不同作物体内硼的累积量没有规律性,而与3种保护酶活性的差异密切相关。这3种保护酶活性的差异可能就是作物对过量硼毒害抗性不同的重要机理之一。 Under soil culture conditions, the laws of absorption and accumulation of boron in two types of crops that are sensitive and highly resistant to excess boron were studied, and the differences of the protective enzymes in SOD, CAT and POX were also studied. The results showed that there was no regularity of boron accumulation in different crops due to excessive Boron toxicity, but closely related to the differences in the activities of three protective enzymes. The differences in the activities of these three protective enzymes may be one of the important mechanisms by which crops resist the excessive boron toxicity.