5种防冻剂对桃花冻害的防护作用  

Protective Effect of Different Antifreezing Agent on Freezing Injury of Peach Blossoms

作　　者：胡增丽[1] 赵龙龙[1] 张未仲[1] 韩凤[1] HU Zengli;ZHAO Longlong;ZHANG Weizhong;HAN Feng(Pomology Institute,Shanxi Academy of Agricultural Sciences,Shanxi Taigu 030815,China)

机构地区：[1]山西省农业科学院果树研究所

出　　处：《山西果树》2019年第6期13-15,共3页Shanxi Fruits

基　　金：山西省重点研发计划重点项目(201703D221011-4);山西省农业科学院特色农业技术攻关项目(YGG17028);山西省农科院科技创新项目(YCX2018302)

摘　　要：近年来,早春低温冻害时有发生,给果树生产带来了重大的经济损失。试验选取了5种防冻剂,在冻害发生前进行树上喷施,冻害后调查子房的受冻情况,研究5种药剂对桃花的防护效果。结果表明,在持续低温条件下,喷施200倍果面净后,桃花受害率为15.5%,明显低于对照(F (5,17)=5.849,P<0.05),贝特、天达2116、小甜甜及甲基硫菌灵4种药剂的防冻效果与对照无明显差异。桃树萌芽后开花前,在低温冻害来临前,喷施200倍果面净可以降低持续低温冻害对桃花的影响。In recent years, low-temperature freezing injury occurred from time to time in early spring, which brought great economic losses to fruit production. Five kinds of antifreezing agent were selected to study the anti-freezing effect on peach blossoms by spraying on trees before freezing injury. The damage condition of ovary was investigated after freezing injury, so that the protective effect of the five agents could be studied. The result showed that after spraying 200 times of Guomianjing at continuous low temperatures, the freezing rate of peach blossoms was 15.5%, which was significantly lower than that of the control group (F (5, 17)=5.849, P < 0.05). On the other hand, the protective effect of Beite, Tianda 2116, Xiaotiantian and Thiophonate-methyl had no significant difference comparing the control group. The effect of continuous low-temperature freezing injury on peach blossoms can be reduced by spraying 200 times of Guomianjing after germinating, before flowering and low-temperature injury.

关 键 词：桃花 低温冻害 防冻剂 防冻效果 

分 类 号：S482.8[农业科学—农药学]