基于隶属函数法的李涂白防寒措施筛选

Selection of the Optimum Cold-proof Treatment with White Paint on Plum by Using Subordinate Function Method

为筛选较适宜的李涂白防寒措施,本研究以‘早红’、‘公主红’和‘吉红’3个李品种为试材,通过不同涂白剂及方法对李树体进行涂白预防冻害,测定枝条冻害级别、植株生长及果实品质等指标,利用正交设计及隶属函数法对防寒效果进行综合评价。结果表明,涂白可降低李树一年生枝冻害情况,促进萌芽及果实生长;筛选出‘公主红’李最佳涂白措施:树干涂白剂+0.5 g/kg纤维素,涂干100 cm。本研究结果可为寒冷地区李树抵御低温胁迫提供技术指导。

In order to select the optimum cold-proof treatment with white paint on plum.Three plum cultivars’Zaohong’,’Gongzhuhong’and’Jihong’were used as the materials,several painting treatments with different materials and methods were used to prevent freezing injury,the damage level of branches,growth increment and fruit quality were determinated.Treatments were evaluated by using the orthogonal test and the membership function method.The results showed that white paint can reduce the freezing injury damage level of annual branches,promote budbreak and fruit growth.The optimum treatment of plum cultivar’Gongzhuhong’was:Paint the trunk at 100 cm high with trunk whitening agent+0.5 g/kg cellulose.The results of the study can provide the technical guidance of treatment to avoid freezing injury on plum in cold regions.