| Maize photosynthetic characteristics and yield under chemical integrated regulation |
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| DOI：10.7606/j.issn.1000-7601.2016.01.30 |
| Key Words: SAP fulvic acid photosynthetic characteristics water stress maize yield |
| Author Name | Affiliation | | ZHU Yuan-hao | College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China | | YANG Pei-ling, | College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China | | LIAO Ren-kuan | College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China | | REN Shu-mei | College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China |
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| Abstract: |
| Under water stress condition, the response rule of spring maize photosynthesis and yield-driven mechanism was explored with chemical integrated or single regulation technology, combined Superabsorbent polymer (SAP) and Fulvic acid (FA). Randomized block design was set as CK, SAP, SAP+FA, and FA, and each group had three replications. The results indicated that SAP was the major factor to regulate soil moisture content, which had been enhanced by 12% from CK. The chemical reagents had their specific effective durations. SAP played a big role during the entire growth period of maize, while FA promoted photosynthesis mostly during the middle and late jointing stage. SAP+FA ultimately resulted in yield increases of 21.3%, 9.3% and 11.7% compared with CK, FA and SAP, respectively, showing an agreement with the photosynthetic efficiency. |
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