栗树是重要的木本粮食树种。其种仁含有丰富的淀粉、蛋白质、脂肪和维生素等物质,营养价值比小麦还高,是良好的果品和木本粮食。因此,发展栗树是增产粮食的另一条途径,对于增加社员收入,巩固集体经济,建设山区具有重要作用。栗树抗寒力较弱,在辽宁栽培的板栗(Castanea mollissima Blume)和丹东栗(Castanea Crenata Sitb)幼树和大树均有不同程度的冻害,尤其在丹东、本溪和抚顺地区较为严重。冻害严重地影响栗树生长和结果。因此,予防冻害是栗树栽培中一项重要管理措施。根据几年来的调查和定位试验提出栗树的冻害几种主要表现及其予防方法,仅供参考。一、栗树的冻害几种主要表现及其危害程度(一)干梢 Chestnut tree is an important woody food tree species. Its seeds are rich in starch, protein, fat and vitamins and other substances, nutritional value is higher than wheat, is a good fruit and woody food. Therefore, the development of chestnut trees is another way to increase grain output, which plays an important role in increasing members’ income, consolidating the collective economy and building mountainous areas. Cold resistance of chestnut trees was weaker. Castanea mollissima Blume and Castanea Crenata Sitb saplings and trees in Liaoning Province all had different degree of frost damage, especially in Dandong, Benxi and Fushun areas. Frost damage severely affects chestnut tree growth and outcome. Therefore, frost damage is an important management measure in chestnut cultivation. According to several years of investigation and positioning test chestnut freeze damage several main performance and prevention methods, for reference purposes only. First, chestnut tree frost damage several main performance and the degree of harm (a) dry tip