| 引用本文: | 张晓琪,杨 思,史勇峰,等.冬小麦花后旗叶光合特性、碳代谢对灌水时期及次数的响应[J].灌溉排水学报,2021,(5):46-53. |
| ZHANG Xiaoqi,YANG Si,SHI Yongfeng,et al.冬小麦花后旗叶光合特性、碳代谢对灌水时期及次数的响应[J].灌溉排水学报,2021,(5):46-53. |
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| 摘要: |
| 【目的】研究不同灌水条件下冬小麦花后碳代谢变化规律，为晋中地区冬小麦节水高效生产提供理论与技术支撑。【方法】根据灌水时期设置7个灌水处理，越冬水（W），拔节水（J），孕穗水（B），越冬水+拔节水（WJ），越冬水+孕穗水（WB），拔节水+孕穗水（JB），越冬水+拔节水+孕穗水（WJB），以全生育期不灌水（CK）为对照，分析冬小麦花后光合特性、碳代谢及籽粒质量变化规律。【结果】①与CK相比，随灌水次数增加，冬小麦花后旗叶Pn、Gs，SPS和SS代谢活性，蔗糖量和可溶性糖量，籽粒蔗糖量、可溶性糖量、淀粉量呈先增后降趋势，JB处理最大，千粒质量则随灌水次数的增加而下降。②不同处理中，灌2水JB处理的碳代谢表现最优，WB、WJB处理次之；与CK相比，产量提高35.57%~85.20%，以灌3水WJB处理最高，WB处理次之。③相关分析表明，千粒质量与籽粒淀粉量极显著正相关（P<0.01）；旗叶净光合速率、气孔导度、蒸腾速率、旗叶SPS和SS酶活性、旗叶蔗糖量和可溶性糖量、籽粒蔗糖量和可溶性糖量之间极显著正相关（P<0.01）。【结论】综合产量和碳代谢相关指标，越冬期和孕穗期灌2水（WB处理）最优。 |
| 关键词: 灌水时期和次数；冬小麦；光合特性；碳代谢；产量 |
| DOI：10.13522/j.cnki.ggps.2020557 |
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| Responses of Photosynthetic Characteristics and Carbon Metabolism of Flag Leaves of Winter Wheat after Anthesis to Irrigation Period and Frequency |
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ZHANG Xiaoqi, YANG Si, SHI Yongfeng, XU Jiarui, YANG Zhenping, GAO Zhiqiang
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1.College of Agriculture, Shanxi Agricultural University, Taigu 030801, China;2. Taigu District Meteorological Bureau, Taigu 030801, China
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| Abstract: |
| 【Objective】In order to provide theoretical and technical support for water-saving and efficient production of Winter Wheat in Jinzhong region, the carbon metabolism of winter wheat after anthesis was studied under different irrigation conditions.【Method】According to the irrigation period, were set seven irrigation treatments. Wintering (W), Jointing (J), Booting (B), Wintering+Jointing (WJ), Wintering+Booting (WB), Jointing+Booting (JB), Wintering+Jointing+Booting (WJB), and non-irrigation as control (CK), in the whole stages analysis of winter wheat photosynthetic characteristics after anthesis, sugar metabolism and grain weight of grain.【Result】①Compared with CK, with the increase of irrigation frequency, the Pn and Gs of flag leaves, the metabolic activities of SPS and SS, the sucrose content and soluble sugar content of flag leaves, the sucrose content and soluble sugar content and starch contents of grains of winter wheat after anthesis, which were increased first and then decreased, JB treatment was the highest, while the 1000-grain weight decreased with the increase of irrigation frequency. ②Among the different treatments, the carbon metabolism of irrigation 2 water JB treatment was the best, followed by WB and WJB treatment; Compared with CK, the yield was increased by 35.57% to 85.20%, and WJB treatment with 3 water was the highest, followed by WB treatment. ③Correlation analysis showed that there was a significant positive correlation between 1 000 grain weight and grain starch content (P<0.01); the net photosynthetic rate, stomatal conductance, transpiration rate of flag leaves, the activities of SPS and SS enzymes of flag leaves, the amount of sucrose and soluble sugar of flag leaves, and the amount of sucrose and soluble sugar of grains were significantly positively correlated (P<0.01).【Conclusion】Comprehensive yield and carbon metabolism related indicators, wintering and booting stage irrigation 2 water (WB treatment) was the best. |
| Key words: irrigation period and frequency; winter wheat; photosynthetic characteristics; carbon metabolism; yield |
