Study on key parameters of irrigation system for Wogan young citrus trees
Water consumption test of single Wogan young tree was carried out at Guilin Farmland Irrigation Test Cen-ter Station.Soil volumetric water content was monitored in real time by intelligent soil moisture meter ET100.Water consumption and water consumption intensity were calculated by water balance method.The results showed that:①The annual water consumption of 3-year old young citrus tree is 542.6m3/mu(1mu≈667m2),of which June is the month with the highest water consumption and December is the month with the minimum water consumption.The water consumption of 10～40cm deep soil layer takes up 71.8%of the annual water consumption,and the annual wa-ter consumption of soil layers below 40cm accounts for 28.2%of the annual water consumption.②Irrigation into a 10cm-deep soil layer can only maintain the water consumption of the 3-year old young citrus trees in the first 4 days.20cm-deep soil layer was dominant in the water consumption.Within 12 days after irrigation,the depth of the mainly affected soil layer was only 30cm.③The main root system of 3-year old young citrus trees is concentrated at a depth of 20cm,so the suitable irrigation depth of young trees should be set at 20cm.④The maximum and mini-mum irrigation intervals for the four typical stages of the 3-year old young citrus trees are 10 days and 5 days,with a median of 8 days.
young citrus tree of Wogan(a kind of orange)water consumptionirrigation system
万方数据
维普
