本文简要介绍了植物耐虫性的含义、发生范围、耐虫性的进化过程和遗传特性、耐虫性机理以及影响植物耐虫性表达的非生物和生物因子。植物耐虫性机理的研究涉及光合作用能力变化、同化产物的再分配、内源激素的变化、休眠分生组织的激活和补偿生长、储藏器官的利用、植物物候学和植株株型结构的变化等。研究表明, 植物受害后光合作用强度的变化与其耐虫性没有相关性, 有些耐虫植物受害后光合作用能力增加, 有些植物光合作用强度无明显影响或者下降较少;害虫取食为害可促进耐虫植物的同化产物得到最大程度利用, 能激活耐虫植物的休眠分生组织, 产生超补偿作用; 耐虫植物受害部位细胞分裂素含量显著升高; 虫害引起物候学变化小的植物具有较强的耐虫性; 植物的冠层结构、叶形态、根茎比、茎蘖数等植株株型变化与耐虫性有关。影响植物耐虫性表达的因子主要有温度、大气 CO2浓度、土壤营养水平、农用化学物质、植株年龄、害虫分布类型和取食方式、植物共生物等。不同植物在相同温度下对同一种害虫的耐害性差异大,其主要原因可能是由于温度的变化引起同化产物的分配和再分配以及气孔关闭对气体交换和光合作用能力的影响; 生长在高CO2含量大气中的植物, 对害虫的为害有较强耐受性。土壤营养水平对植物耐虫性表达 This article briefly introduced the meaning of plant pest resistance, its occurrence, the evolutionary process and genetic characteristics of its resistance to insects, the mechanism of its tolerance to insects, and the abiotic and biological factors that affect the expression of plant pest resistance. Studies on the mechanisms of plant pest resistance involved changes in photosynthetic capacity, redistribution of assimilation products, changes in endogenous hormones, activation and compensatory growth of dormant meristem, utilization of storage organs, changes in plant phenology and plant architecture Wait. The results showed that there was no correlation between the change of photosynthesis intensity and its resistance to insects after the plant was damaged. Some plants had the increased ability of photosynthesis after the damage, and the photosynthesis intensity of some plants had no obvious effect or decreased less. The assimilation products of pest plants are utilized to the greatest extent, which can activate dormancy meristem of insect-resistant plants, resulting in overcompensation; the content of cytokinin in the damaged parts of pest-resistant plants is significantly increased; the plant with little change in phenology caused by pest The plant structure and leaf shape, rhizome ratio, number of stems and tillers and other plant type changes and resistance to insects. The main factors affecting the plant expression of insect resistance temperature, atmospheric CO2 concentration, soil nutrient levels, agrochemicals, plant age, pest distribution types and feeding patterns, plant symbiosis. Different plants at the same temperature on the same pest differences in resistance, the main reason may be due to changes in temperature caused by the assimilation product distribution and redistribution and stomatal closure on the gas exchange and photosynthesis ability; growth in high CO2 content of the atmosphere in the plant, the damage of pests are more tolerant. Soil nutrient levels are resistant to plant expression