葡萄免土埋越冬中需冷量对气候变化的响应特征分析

Grapes from Soil Buried in the Winter to Cold Quantity Analysis of Characteristics of Response to Climate Change

摘要: 针对葡萄实施免土埋覆盖越冬技术后出现春季萌芽不整齐、时段滞长、坐果率低、生理障碍严重等生长状况不正常现象，利用2008~2009年冬季进行免土埋越冬试验获得的温度资料，对葡萄休眠后获得的需冷量变化特征进行了分析研究，表明，在实施免土埋覆盖越冬技术的各试验点，葡萄冬后所获需冷量均明显低于正常值范围的下限，更低于历年需冷量的均值；在秋季气温下降平缓、气候温凉的区域，低温积累时间长，需冷量也有所增加。同时对各试验点冬后枝条发芽率的分析表明，需冷量低于正常值下限较多的区域，发芽率也相对偏低较多。

Abstract: According to the implementation of the grapes from soil buried cover wintering technology ap-pears after the spring bud impure, long time delay, fruit rate is low, the physical barriers such as serious growth status is not normal phenomenon, using 2008-2009 winter to avoid soil buried wintering test for temperature material, to the vine after dormancy for cold quantity variation characteristics should be studied, that, in the implementation of free soil buried cover wintering technology all sites, grapes after winter to the cold quantity were significantly lower than normal range of floor, more should be less than the amount of cold mean; In autumn the temperature down gently, climate temperature cool area, low temperature storage time long, cold quantity should be increased. At the same time on the site after the winter branches germination percentage analysis showed that cold quantity should be less than normal floor more area, germination rate is relatively low more.