Effects of different amount of drip irrigation on carbon metabolism and photosynthetic nitrogen utilization efficiency of maize after anthesis under shallow buried drip irrigation

The objective of this study is to explore the effects of different amount of drip irrigation on carbon metabolism and photosynthetic nitrogen use efficiency of maize after anthesis under shallow buried drip irrigation. Three treatments of irrigation amount 40% (W1: 1600 m3 hm-2), 50% (W2: 2000 m3 hm...

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Bibliographic Details
Published inZuo wu xue bao Vol. 48; no. 10; p. 2614
Main Authors Yang, Heng-Shan, Zhang, Yu-Shan, Ge, Xuan-Liang, Li, Wei-Min, Guo, Zi-He, Guo, Nuan
Format Journal Article
LanguageChinese
Published Beijing Chinese Academy of Agricultural Sciences (CAAS) 01.01.2022
Subjects
Border irrigation
Carbohydrates
Carbon
Carboxylation
Chlorophyll
Corn
Drip irrigation
Dynamic characteristics
Efficiency
Enzymes
Flowering
Irrigation
Irrigation water
Kinases
Leaf area
Malate dehydrogenase
Maturity
Metabolism
Nitrogen
Phosphoenolpyruvate carboxylase
Photosynthesis
Pyruvic acid
Stomata
Sucrose
Water conservation
Water use
Water use efficiency
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Summary:The objective of this study is to explore the effects of different amount of drip irrigation on carbon metabolism and photosynthetic nitrogen use efficiency of maize after anthesis under shallow buried drip irrigation. Three treatments of irrigation amount 40% (W1: 1600 m3 hm-2), 50% (W2: 2000 m3 hm-2), and 60% (W3: 2400 m3 hm-2) of traditional border irrigation (4000 m3 hm-2) were set to study dynamic characteristics of leaf source, photosynthesis, activities of photosynthetic carbon metabolism enzyme, photosynthetic nitrogen use efficiency, content of non-structural carbohydrate after anthesis, and yield of different amount drip irrigation under shallow buried drip irrigation. The results showed that there was no significant difference on mean yield between CK and W3, while W2 and W1 were both significantly lower than CK and the annual average yield of W2 and W1 respectively decreased by 3.91% and 11.18% compared with that of CK from 2018 to 2020. There was also no significant difference on yield W3 and W2,
ISSN:0496-3490
DOI:10.3724/SP.J.1006.2022.13061