摘要
以水培法测定了成都地区2008—2010年3年的桃需冷量,统计了两个完整年度的7.2℃模型、0～7.2℃模型、犹它模型3种模型秋冬季需冷量累积量变化趋势。结果发现,成都桃自然休眠期的结束时间差异很大,最早在12月上旬,最晚在2月下旬,大部分桃品种在1月中旬至2月中旬结束自然休眠。需冷量累积数据分别用3种模型统计比较,前两种模型计算不同起始时间与已报道数据的比较,发现成都地区桃需冷量的较好计算模型是以低于7.2℃温度为起始时间的0～7.2℃模型。在此模型下统计和分析了引种桃来源地需冷量范围。
The chilling requirements of peach by hydroponic method in chengdu have been investigated during 2008 to 2010. The trends of accumulation changes of chilling requirement in autumn and winter season were recorded by 7.2℃ model, 0-7.2℃ model, Utah models. The ending of natural dormant in chengdu areas were significantly different for distinct cultivars. Besides, the earliest ending of natural dormancy was occurred at the beginning of Novenber. The latest ending of natural dormancy were found at the end of Feb. In addition, the ending of natural dormancy happened during the middle of Jan to middle of Feb for almost of cultivars. Comparison studies on the three models, comparison researches on beginning timing using 7.2℃ model and 0-7.2℃ model, comparison studies on previous known results indicated that 0-7.2℃ model was more suitable for chilling requirements of peach than other models if the temperature was lower than 7.2℃ to start timing. The chilling requirements for a number of cultivars have been recorded and analysis using the 0-7.2℃ model. In this model, introduction of statistics and analysis of the sources of resources to peach chilling requirement range.
出处
《广东农业科学》
CAS
CSCD
北大核心
2011年第19期47-49,共3页
Guangdong Agricultural Sciences
基金
四川省科技厅"十一五"果树育种攻关项目(2006YZGG-7-7)
关键词
桃
自然休眠
需冷量
模型
peach
natural dormancy
chilling requirement
model
