我省冬季严寒,栽培果树常发生冻害,对生产威胁很大。 1962年开始观察测定了高接后枝条的生、理状态,果园不同高度的温度变化,明确了高接提高抗寒的原因和效果。选出了适宜的中间砧木品种,研究了高接方式和延长高接换头时期。果树高接已确定在生产中推广应用,目前全省约有高接树50万株。 Cold winter in our province, the cultivation of fruit trees often freeze damage, a great threat to the production. Beginning in 1962 measured the height of branches and then Health and Physiological state, orchard temperature changes at different heights, a clear high-cold increase the cause and effect. Selected the appropriate varieties of rootstocks, studied the high access methods and extend the period of high accession. Fruit tree has been determined to promote the application of production, the province now has about 500,000 high tree access.