| 摘要: |
| 【目的】明确砀山酥梨的生理需冷量，探索气候变化对砀山酥梨适宜栽培区域的影响。【方法】2009-2012年，定期采集砀山酥梨自然越冬条件下着生花芽和叶芽的休眠枝条，在人工气候箱内采用清水插枝法培养3周，统计花芽和叶芽的萌芽率，确定满足砀山酥梨花芽和叶芽休眠的日期，依据温度记录数据，计算砀山酥梨在7.2 ℃模型、0～7.2 ℃模型、犹他模型下的需冷量。【结果】砀山酥梨花芽的需冷量，0～7.2 ℃模型为1 051 h，7.2 ℃模型为2 070 h，犹他模型为788 CU；砀山酥梨叶芽的需冷量，0～7.2 ℃模型为1 126 h，7.2 ℃模型为2 198 h，犹他模型为857 CU。【结论】结合黄河故道地区冬季温度变化以及3种模型需冷量的变化规律，认为采用0～7.2 ℃模型确定该地区砀山酥梨的需冷量比较适宜。 |
| 关键词: 砀山酥梨 需冷量 黄河故道地区 |
| DOI： |
| 分类号: |
| 基金项目:安徽省水果“115”创新团队项目（皖人才办［2011］2号）；安徽省农业科学院重点及新兴学科培育项目（12A0303）；财政部现代农业生产发展资金项目（皖农财［2009］297号） |
|
| Measurement and evaluation of chilling requirement of Dangshan pear in the old course of the Yellow River area |
|
YI Xingkai, XU Yiliu, ZHANG Jinyun
|
|
Anhui Academy of Agricultural Sciences
|
| Abstract: |
| 【Objective】To confirm the chilling requirement of Dangshan pear,the effect of climate change on planting conditions of Dangshan pear was explored.【Method】The flower bud and leaf bud germination date,dormancy branches of flower bud and leaf bud under natural overwintering conditions were periodically collected and cultured for 3 weeks using water cutting method between 2009 and 2012.According to the temperature record data,the chilling requirements of Dangshan pear under 7.2 ℃ model,0-7.2 ℃ model and Utah model were calculated,respectively.【Result】The chilling requirements of Dangshan pear flower bud under 0-7.2 ℃ model,7.2 ℃ model and Utah model were 1 051 h,2 070 h and 788 CU,respectively.The chilling requirements of Dangshan pear leaf bud under 0-7.2 ℃ model,7.2 ℃ model and Utah model were 1 126 h,2 198 h and 857 CU,respectively.【Conclusion】In combination with the winter temperature changes and the variations of cold amounts required by three models,the 0-7.2 ℃ model was identified to be the best appropriate to assess the chilling requirement of Dangshan pear in the old course of the Yellow River area. |
| Key words: Dangshan pear chilling requirement old course of the Yellow River area |
