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| Effects of Different Slow-release Fertilizers on Photosynthesis，Yield and Quality of Zizania aquatica |
| LI Tong1，2，WU Zhanhui2，3，TONG Jing2，3，WANG Liping1，WANG Baoju2，3，LIU Ziying1* |
1College of Landscape and Ecological Engineering，Hebei University of Engineering，Handan 056038，Hebei，China；
2Research Center for Vegetables，Beijing Academy of Agriculture and Forestry Sciences，Beijing 100097，China；3Key
Laboratory of North China Urban Agriculture，Ministry of Agriculture and Rural Affairs，Beijing 100097，China |
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Abstract In order to screen out the suitable slow-release fertilizer for Zizania aquatica, taking
Zizania aquatica‘ Zhejiao No.2’as test material and common compound fertilizer as the control，this paper
explored the effects of 5 different slow-release fertilizers with different ratios of nitrogen，phosphorus and
potassium on photosynthesis，yield and quality of Zizania aquatica．The results showed that by applying
‘Xinyangfeng’slow-release fertilizer with the ratio of nitrogen， phosphorus，potassium as 25∶12∶15，
the plant height of Zizania aquatica could reach 174.83 cm，total chlorophyll content be 5.56 mg · g-1，net
photosynthetic rate be 10.47 μmol · m-2 · s-1，yield be 27.44 t · hm-2，soluble protein content be 2.77 mg · g-1，
VC content be 110.90 mg · kg-1， and soluble sugar content be 3.62%．In conclusion，under the experimental
conditions，the botanical characters，photosynthetic parameters of leaves，yield and quality of Zizania
aquatica treated with‘Xinyangfeng’slow-release fertilizer were all better than those of the other treatments．
Thus，we recommended to extend and use this treatment in Zizania aquatica planting．
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Received: 08 May 2020
Published: 30 July 2020
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