双季超级早稻分蘖期温度适宜性指标

生态学杂志

双季超级早稻分蘖期温度适宜性指标

陆魁东^1**,李涵茂²,黄晚华¹,李迎春³

（¹湖南省气象科学研究所，长沙 410118； ^2 湖南省衡阳市农业气象试验站，湖南衡阳 421101； ³ 江西省气象科学研究所，南昌 330046）

出版日期:2015-02-07 发布日期:2015-02-07

Suitable temperature indices of double-cropping super early rice at tillering stage.

LU Kui-dong^1**, LI Han-mao², HUANG Wan-hua¹, LI Ying-chun^3

(¹Institute of Meteorological Sciences of Hunan Province, Changsha 410118, China; ²Hengyang Agrometeorological Experiment Station, Hengyang 421101, Hunan, China; ³Meteorological Research Institute of Jiangxi Province, Nanchang 330046, China)

Online:2015-02-07 Published:2015-02-07

摘要/Abstract

摘要： 采用2012—2013年江西南昌室内人工气候箱温度控制处理和田间栽培资料，通过对分蘖速率、叶面积、生物量、穗粒数、结实率、空秕率、理论产量等要素与气温进行相关分析，对超级早稻分蘖温度适宜性指标进行了研究。结果表明：超级早稻分蘖盛期，适宜温度范围为26～28 ℃，最适温度为27 ℃；分蘖后期，适宜温度范围为25～27 ℃，最适温度为26 ℃；分蘖不适宜低温指标为18.5 ℃，高温指标为35.8 ℃；双季超级稻种植区可根据分蘖期的温度指标，合理安排播种期，预防低温冷害。

关键词: 夏玉米, 叶片衰老, 水氮耦合, 控释尿素

Abstract: High and stable yield of doublecropping super rice has become an important part for national food security since 2006 when it has been promoted. However, only few studies have focused on the relationship between its ecological characteristics or production structure formation and meteorological factors. In this paper, the suitable temperature indices were studied based on the data of temperature controlled by the artificial climate chamber and field cultivation observation, in combination with analysis of the correlations between temperature and tillering rate, leaf area, biomass, grain number per spike, seed setting rate, sterile grain rate and theoretical yield in Nanchang, Jiangxi Province during 2012 to 2013. The results showed that the suitable temperature at active tillering stage ranged from 26 ℃ to 28 ℃ with the optimum value of 27 ℃; for the later tillering stage, the suitable temperature ranged from 25 ℃ to 27 ℃ with the optimum value of 26 ℃. For tillering period, unsuitable low temperature index was 18.5 ℃, while unsuitable high temperature index was 35.8 ℃. Temperature indices from this study would provide reference for reasonably arranging sowing dates so as to avoid chilling damage.

Key words: controlled release urea, leaf senescence, summer maize, water and N coupling

陆魁东1**,李涵茂2,黄晚华1,李迎春3. 双季超级早稻分蘖期温度适宜性指标[J]. 生态学杂志.

LU Kui-dong1**, LI Han-mao2, HUANG Wan-hua1, LI Ying-chun3. Suitable temperature indices of double-cropping super early rice at tillering stage.[J]. cje.

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