大花黄牡丹物候观测及其主要气象因子关系分析

以分布于西藏林芝地区的大花黄牡丹为研究对象,通过2012-2013年连续两年对其萌芽期、展叶期、开花期等主要物候期进行观测,结果表明:(1)3月上旬(或中旬)鳞芽开始萌动,植株进入生长期;(2)3月底(或4月初)花芽开始膨大,5月上旬(或中旬)始花,5月中(或下旬)进入开花盛期,随后进入果实生长期;(3)6月中旬、下旬至9月中旬为果实成熟盛期,之后果实开始脱落.两年的观测发现,年际间物候期存在一定差异.各物候期与温度指标具有显著相关性:萌动前的候平均气温在4.1℃时可视为萌动期开始的温度指标;候平均气温在10℃时进入开花期,花期≥5℃的有效积温不低于325℃,开花期前的累计日照时数不少于470...

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Published in广东农业科学 Vol. 41; no. 7; pp. 43 - 47
Main Author 薛丽姗 罗大庆
Format Journal Article
LanguageChinese
Published 西藏农牧学院高原生态研究所,西藏林芝,860000%西藏农牧学院高原生态研究所,西藏林芝860000 2014
西藏林芝高山森林生态系统国家野外科学观测研究站,西藏林芝860000
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ISSN1004-874X

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Summary:以分布于西藏林芝地区的大花黄牡丹为研究对象,通过2012-2013年连续两年对其萌芽期、展叶期、开花期等主要物候期进行观测,结果表明:(1)3月上旬(或中旬)鳞芽开始萌动,植株进入生长期;(2)3月底(或4月初)花芽开始膨大,5月上旬(或中旬)始花,5月中(或下旬)进入开花盛期,随后进入果实生长期;(3)6月中旬、下旬至9月中旬为果实成熟盛期,之后果实开始脱落.两年的观测发现,年际间物候期存在一定差异.各物候期与温度指标具有显著相关性:萌动前的候平均气温在4.1℃时可视为萌动期开始的温度指标;候平均气温在10℃时进入开花期,花期≥5℃的有效积温不低于325℃,开花期前的累计日照时数不少于470 h;幼果出现期的平均气温在15℃以上,果实成熟期的平均气温在17℃以上,果实脱落期日平均气温为13℃;11月日平均温度低于6℃时,大花黄牡丹进入休眠期.
Bibliography:44-1267/S
XUE Li-shan', LUO Da-qing1'2 (1. Institute of Plateau Ecology, Tibet Agriculture and Animal Husbandry College, Nyingchi 860000, China; 2. National Forest Ecosystem Observation & Research Station, Nyingchi 860000, China)
Paeonia ludlowii distributed in Tibet Nyingchi area was taken as research object, and such main phenophase as sprout period, leaf-expansion period, flowering period were observed from 2012 to 2013. The results showed that: (1) The bulbil began germinating in mid March, and the plant got into growth period; (2) The buds began swelling at the end of March to early April, the flowers opened in early or mid May, and the plant entered flowering peak in middle or late May. Then the plant entered the fruit growing period. (3) Mid-late June to mid-September was the fruit maturity stage, the fruit began to fall after that. We found that there were significant correlations between phenophase phase and temperature index: pentad average temperature of 4.1℃ could be regarded as the temperature inde
ISSN:1004-874X