Abstract:

Ziziphus jujuba‘Zhandong 1’and‘Zhandong 2’were chosen as the experimental material. The experimental materials were separately irrigated with magnetized fresh water and underground shallow saline water to test the influence of magnetized fresh water on the growth of bearing shoot，the growth and nutrient content of leaves and fruits. The results showed that：（1）Magnetized water irrigation treatment could improve the fresh weight of leaf，leaf area，chlorophyll content，organic acid，vitamin C and anthocyanin content significantly，and prolong the fruits storage period.（2）In the trial plot of Z. jujuba‘Zhandong 1’，treatment with magnetized（A400p） fresh water irrigation could increase the length and diameter of bearing shoot by 11.375% and 15.810%，single leaf area by 12.418%，single fruit weight by 23.779%，water content by 2.377%，fruit transverse diameter and longitudinal diameter by 3.650% and 5.071%. It had a significant difference（P < 0.05）compared with the un-magnetized fresh water irrigation treatment. In the trial plot of Z. jujuba‘Zhandong 2’，treatment with fresh water magnetized by imported magnetizer（A400p）could increase the length and diameter of bearing shoot by 23.602% and 13.710%，single leaf area by 23.622%，thickness by 13.825%，single fruit weight by 12.526% and fruits reducing sugar by 12.110%. It also had a significant difference（P < 0.05）compared with the un-magnetized fresh water irrigation treatment. （3）Treatment with magnetized（DS-948-1） underground shallow saline water irrigation could increase fruits water content by 4.386% and reducing sugar content by 9.158%. It also had a significant difference（P < 0.05）compared with the un-magnetized shallow saline water irrigation treatment.（4）The irrigation water treatment with magnetized could increase the leaf mineral nutrient content of N，P and Cu significantly（P < 0.05）. Irrigating with magnetized fresh water had good function to the growth and development of branch leaves and fruits，and improved the quality and storage of fruits.

Key words: Ziziphus jujuba, magnetized water irrigation, growth, quality