不同缓释肥对茭白光合作用、产量及品质的影响

Effects of Different Slow-release Fertilizers on Photosynthesis,Yield and Quality of Zizania aquatica

为筛选出适宜茭白种植的缓释肥种类,以浙茭2号为试材,以普通复合肥为对照,探究5种氮磷钾不同配比的缓释肥对茭白光合作用、产量及品质的影响。结果表明,施用氮磷钾比例为25∶12∶15的新洋丰缓释肥处理茭白株高可达174.83 cm,总叶绿素含量为5.56 mg·g^(-1),净光合速率10.47μmol·m^(-2)·s^(-1),产量可达1829.62 kg·(667 m^(2))^(-1),可溶性蛋白含量可达2.77 mg·g^(-1),VC含量110.90 mg·kg^(-1),可溶性糖含量3.62%,茭白植物学性状、叶片光合参数、产量、品质整体表现优于其他处理,可推荐在茭白种植中推广使用。

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 10.47μmol·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.