生理病害是在蔬菜的生长过程中,经常因肥料的施用不当如肥料不足、过量及养分比例失调等,土壤水、气、热等条件恶化及环境调控不当等,使蔬菜出现生长受阻现象,表现各种生理障碍。由于这种生理障碍不是由病原菌侵染引起,它属于蔬菜生理代谢失衡而引起的生理障碍,故称之为生理病 Physiological diseases are the growth process of vegetables, often due to improper use of fertilizers such as inadequate fertilizers, overdose and nutrient imbalances, soil water, gas, heat and other deterioration of the environment and improper environmental regulation, so that the growth of vegetables appear blocked, the performance of Various physical disorders. As this physiological disorder is not caused by the infection of pathogenic bacteria, it belongs to physiological imbalance of vegetables caused by physical disorders, it is called physiological disease