论文部分内容阅读
本文着重研究了果树枝条R值与温度之间的变化关系,创制了“R图式”。根据“R图式”,得到了与许多研究者认为电阻法对抗寒力鉴定不适用的相反结论;论证了在质膜致害临界温度以下3～15℃处理试材,也就是把R值控制在80～30之间鉴定品种的抗寒力较为适宜,并且R值在80～50之间鉴定效果更好。作者在辽宁、吉林、黑龙江等不同地点,选取了大树、小树和杂种实生苗等不同试材,从枝条休眠期、萌芽期到生长期等不同时期取样,共重复30余次,结果均表现为抗寒力越强(受冻害越轻)R值越大。
This paper focuses on the relationship between the R value of fruit tree branches and temperature, creating the “R schema.” According to “R Schema”, we get the opposite conclusion from many researchers that the resistance method is not suitable for the evaluation of the cold resistance. It is demonstrated that when the test material is treated at 3 ~ 15 ℃ below the critical temperature of plasma membrane damage, It is more suitable to identify the cold hardiness of the cultivars between 80 and 30, and the R value is better identified between 80 and 50. In different locations such as Liaoning, Jilin and Heilongjiang, the authors selected different test materials, such as tree, tree and hybrid seedlings. Samples were collected from different periods of dormancy period, germination period to growth period, and were repeated for more than 30 times. The results were The performance of the more cold-resistant (cold damage by the lighter) R value is greater.