几种蓝莓防寒方法的比较

以高丛蓝莓‘蓝金’为试材,研究不同防寒方法对蓝莓生长微环境和越冬性的影响。结果表明,套袋防寒对袋内日最低温度、日平均温度、日最高温度影响不大,但对空气相对湿度、一年生枝条长度和花芽枯死率影响较大。因此可以确定大连地区蓝莓越冬伤害是由枝条过度失水所引起。采用双层膜套袋(内层膜为黑色塑料膜,外层膜为镀铝反光膜0.012 mm)及单层膜(镀铝反光膜附在玻璃丝布上)套袋防寒效果最好。

Comparative of Different Methods for Protecting Blueberry from Cold Damage in Winter

Taking overwintering highbush blueberry‘Blue Gold’ as test material,this paper studied the effects of different winter protection methods on microenvironment and winter hardiness. the results showed that:the bagging protected method little effect on the daily minimum temperature,daily mean temperature and dailymaximum temperature,but significantly increased relative humidity during winter and percent of injured length of 1-year-old shoots and flower buds,confirm that the water stress is the primary factor that influence the overwintering ability of blueberry. Bagging with double layer film(the Inner film were black plastic film,the outer film were reflecting aluminum film of 0.012 mm)and single layer film(reflecting aluminum film attached to glass cloth) were optimal method for protecting blueberry trees from cold damage in the south of Dalian.