用测定过冷却点的方法研究了红褐斑腿蝗(Catantopspinguis(Stal))在不同季节的抗寒能力,并就虫体含水量、粗脂肪、总蛋白和总糖等成分在不同季节的变化及其对过冷却点的影响进行了探讨.结果表明,红褐斑腿蝗的过冷却点存在显著的季节性差异,依次为秋季种群((-23.1±0.2)℃)<越冬后种群((-19.3±0.1)℃)<夏季种群((-4.0±0.1)℃).含水率在生长期极显著高于越冬期,越冬初期和越冬后期变化不大,说明红褐斑腿蝗在越冬准备期已排出了体内多余的游离水.越冬后蝗虫体内总糖含量和脂肪含量均显著低于越冬初期,说明蝗虫在越冬时主要靠消耗体内的碳水化合物和脂肪物质来维持体温,体内的营养物质消耗极大,导致越冬后过冷却点显著上升.含水率和含脂率在两性间差异不显著,雌性蝗虫的总蛋白含量在夏季种群略高于雄性,越冬期显著低于雄性,可能与雌蝗孕卵过程中动用了大量营养物质有关. The cold resistance of Catantopspinguis (Stal) in different seasons was studied by measuring the subcooling point. The changes of water content, crude fat, total protein and total sugar of the parasites in different seasons And their effects on the subcooling point were discussed.The results showed that there were significant seasonal differences in the subcooling points of the Amurodendron chinensis, followed by the autumn population (-23.1 ± 0.2 ℃) -19.3 ± 0.1 ℃)