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| DOI：10.13522/j.cnki.ggps.2022185 |
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| Effects of Field Microclimate Regulation on Photosynthesis, Yield and Quality of Jujube at Flowering to Fruit-setting Stage |
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MA Junyong, ZHOU Jianwei, ZHENG Guoyu, HE Shuai,
ZHONG Zhibo, ZHANG Wanheng, LIU Zhipeng
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1. Xinjiang academy of agricultural and reclamation science, Shihezi 832000, China;
2. Key Laboratory of Northwest Oasis Water-Saving Agriculture, Ministry of Agriculture and Rural Affairs,
Shihezi 832000, China; 3. College of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China;
4. Sichuan Provincial Water Resources Department, Chengdu 610017, China
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| Abstract: |
| 【Objective】In order to explore the effect of microclimate regulation in the field under the climate drought and extreme high temperature. 【Method】 In this study, three micro-sprinkler irrigation treatments T1 (2 mm/d), T2 (4 mm/d), T3 (6 mm/d) and CK (0 mm/d) were carried out on mature grey jujube at flowering to fruit-setting stage. To study the effects of field microclimate regulation on photosynthesis, yield and quality of Jujube. 【Result】The results indicated that field microclimate regulation had significant effect on the photosynthesis of Jujube at flowering to fruit-setting stage, increasing the chlorophyll content, net photosynthetic rate Pn and stomatal conductance Gs, and decreased the intercellular CO2 concentration Ci and transpiration rate Tr. Moreover, it is beneficial to improve the yield and quality of jujube. 【Conclusion】Therefore, micro-sprinkler irrigation is an effective measure to cope with climate drought and extreme high temperature, and can effectively improve the crop growth environment in the field. |
| Key words: micro-sprinkler irrigation; chlorophyll; net photosynthetic rate; transpiration rate; stomatal conductance |
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