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Title:: Effects of Spraying Mineral Nutrients on Mineral Elements Content,Growth and Fruit Quality of the Ziziphus jujuba

Author(s):: NIU Xiaolin1; 2; MA Wenfeng3; CHEN Guimin3; LI Rui4; ZHANG Hongyan1; 2; (1.College of Resources and Environment，China Agricultural University,Beijing 100193;2.Quzhou Experimental Station，China Agricultural University，Handan，Hebei 057250;3.Agricultural Bureau of Shandong Laoling,Laoling，Shandong 253600;4.College of Horticultural Science and Engineering，Shandong Agricultural University，Tai′an，Shandong 271018)

Keywords:: Ziziphus jujuba; foliar spraying; mineral element; growth and quality

Abstract:: Four kinds of nutrient solution (boron，zinc，iron and potassium dihydrogen phosphate) were sprayed on Ziziphus jujube in different growth stages and the water was used as control.The effects of four treatments on fruit development，nutrient content and quality of jujube were studied by measuring the physiological indexes and nutrient contents of fruit and leaves in different stages of jujube development.The results showed that the four kinds of treatments resulted in the growth of fruit diameter，fruit shape index increased and the commodity fruit percentage increased.Spraying boron and potassium dihydrogen phosphate made fruit weight and soluble sugar content increase significantly.In addition spraying boron also increased the phosphorus and boron content of leaves and the phosphorus，potassium and boron content of fruit.The zinc and potassium contents of leaves were increased by zinc spraying.Spraying iron made the iron content of leaves and fruits increase.Potassium dihydrogen phosphate treatment increased leaf phosphorus，potassium and fruit boron content.The results showed that the spraying mineral nutrients could effectively promote the growth and development of jujube and improve the quality of fruit.