波兰一位长期从事果树抗寒 性研究的专家Holubowicz报 道他对近期果树抗寒性研究结 果,证明:果树冻害受气象条件 的影响最严重,约占80%。其他 因素如:植物保护、土、肥水管 理,耕作制度、上一年的产量。种 和品种的抗性等,约占2 0 %。在 气象条件中,秋季阳光、日暖、 夜凉,有益 Holubowicz, a Polish expert who has long been engaged in studying cold hardiness of fruit trees, reported on his recent research on the cold hardiness of fruit trees and proved that frost damage on fruit trees is most seriously affected by weather conditions, accounting for about 80%. Other factors such as plant protection, soil, fertilizer and water management, cropping system, production of the previous year. Resistance of species and varieties, about 20%. In meteorological conditions, autumn sunshine, warm day, night cool, good