›› 2017, Vol. 29 ›› Issue (1): 64-72.DOI: 10.3969/j.issn.1004-1524.2017.01.10

• Horticultural Science • Previous Articles     Next Articles

Effects of different irrigation methods on sap flow and fruit quality of jujube in arid area

CHENG Ping1, LI Changcheng2, LI Hong1, *, ZHANG Zhigang2, LIU Bang2, SUN Mingsen2   

  1. 1. Xinjiang Academy of Forestry Sciences, Urumqi 830000, China;
    2. Forestry and Horticulture College, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2016-06-20 Online:2017-01-15 Published:2017-02-23

Abstract: By employing the stem sap meter (TDP) and HOBO microclimate instrument, the stem sap flow rate and meteorological factors of jujube in full fruit period in arid area were measured continuously in 2 typical irrigation conditions, i.e. pit irrigation and flood irrigation, to explore the connection between stem sap flow rate and meteorological factors in sunny days. The yield and fruit quality under 2 conditions were also compared. It was observed that the characteristic values of jujube sap flow appeared at the same time. However, values varied under different irrigation conditions. Before watering, each characteristic value of pit irrigation was greater than that under flood irrigation. After watering, the result was just the opposite. The result clearly and directly reflected the effect of sail water content on sap flow. The water efficiency of the tip and flood irrigation were 61% and 10%, respectively. There were interactions within meteorological factors and jujube sap flow. The main meteorological factor affecting the sap flow was sun radiation. The relative humidity was negatively correlated to liquid flow rate and other meteorological factors. Compared with flood irrigation, the fruit yield under pit irrigation was increased by 29%. But, the fruit quality showed no obvious difference. To sum up, pit irrigation had obvious beneficial effect in terms of fruit yield and water efficiency.

Key words: pit irrigation, flood irrigation, sap flow, meteorological factor, fruit quality

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