丹东地区不同品种软枣猕猴桃需冷量研究

Study on Cooling Requirements of Different Varieties of Kiwifruit in Dandong Area

以丹东地区主要栽培的7份软枣猕猴桃资源为试材,采用田间自然收集枝条和一次采集枝条放于人工控制低温(4℃)2种不同方式进行需冷量计算,研究其在不同方法下的需冷量差异。结果表明,不同低温处理方式对萌芽的影响结果不一致,在室内人工低温条件下软枣猕猴桃的需冷量在480~912 H,在自然条件3种不同的计算方法下软枣猕猴桃的需冷量分别为246~491、545~1744、363~480.5 C.U,且人工条件下龙成2号和丹凤一号的需冷量均低于自然条件下,而海佳和见丰魁绿高于自然条件下。

In this study,the cooling requirements of 7 main cultivated kiwifruit in Dandong area were calculated by two different methods:natural field collection of branches and one time collection of branches placed at artificially controlled low temperature(4℃).The cooling requirements were studied under different methods.The results showed that the effects of different low temperature treatments on germination were not consistent.Under the indoor artificial low temperature conditions,the cooling requirements ranged from 480 H to 912 H.Under the natural conditions,the cooling requirements were 246-491,545-1744 and 363-480.5 C.U,respectively.In addition,the cooling requirements of Longcheng 2 and Danfeng 1 under artificial conditions were lower than those under natural conditions,while those of Haijia and Jianfengkui were higher than those under natural conditions.