Effects of Spraying Nano-iron and Nano-zinc Foliar Fertilizer on Leaf and Fruit Quality of Ziziphus jujuba Mill.cv.Dongzao
The 7-year-old Dongzao was used as the test material,and different concentrations of T1 (2.5 mL·L-1 ),T2 (5.0 mL·L-1 ),T3 (10.0 mL·L-1 )and T4 (15.0 mL·L-1 )of nano-iron and nano-zinc mixture were sprayed on the leaf surface during fruit development.The effect of nano-iron and nano-zinc mixture on the quality of Dongzao leaves and fruits was studied with spraying water as a control,in order to screen out the suitable concentration of nano-iron and nano-zinc mixture to promote the quality of Dongzao.The results showed that foliar application of 10.0 mL · L-1 nano-iron-zinc foliar fertilizer significantly improved the fruit quality of Dongzao,increased the single fruit weight, fruit hardness,soluble solids content,vitamin C content and solid-acid ratio,and reduced the titratable acid content,improved the photosynthetic pigment content and photosynthesis of Dongzao leaves;spraying concentration of 15.0 mL · L-1 nano-iron-zinc foliar fertilizer had the best effect on the content of iron and zinc in Dongzao leaves and fruits.Therefore,foliar application of nano-iron and zinc foliar fertilizer could promote the accumulation of iron and zinc in Dongzao leaves,increase photosynthetic pigments content,promote photosynthesis,and improve fruit quality.
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万方数据
