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以枣树林中空地为对照,研究漫灌条件下新疆阿克苏地区幼龄枣树林地土壤水分的运移规律,并用EM50测定土壤含水量的变化,以确定不同灌水量下的枣树林地土壤水分的下渗速率、土壤湿润区间、灌溉周期,为枣树的精准灌溉提供科学依据。结果表明:(1)灌水量为80、120和160 m3.亩-1时,枣树林地土壤最大含水量分别为36.8%、38.7%和39.0%,含水量最高的土层分别在-20 cm、-60 cm和-60 cm范围处。(2)在灌溉过程中,土壤水分的运移速率平均为3.74 min.cm-1。(3)随灌水量的增加,幼龄枣树林地土壤湿润区间也在增大,灌水量为80、120和160 m3.亩-1的土壤湿润区间分别为0~-60 cm、0~-80 cm和0~-100 cm。(4)土壤水分湿润区间和灌水量和灌溉时间存在线性函数关系,表达式为Y=0.347 X1+0.364 X2-65.538。(5)灌水量每增加40 m3.亩-1,相应的灌水周期将延长2~4 d。
The jujube forest open space as a control, the study under the condition of flood irrigation Aksu Xinjiang jujube woodland soil water movement, and the use of EM50 determination of soil moisture content changes to determine the jujube forest soil moisture under different irrigation Permeability rate, soil wetting interval and irrigation period provide scientific basis for precision irrigation of jujube trees. The results showed that: (1) The maximum soil water content of jujube tree forest soil was 36.8%, 38.7% and 39.0% respectively when the irrigation water was 80, 120 and 160 m3. When the soil moisture content was the highest, , -60 cm and -60 cm range. (2) During the irrigation process, the average soil water transport rate was 3.74 min.cm-1. (3) With the increase of irrigation amount, the wetting interval of jujube tree jujube forest land also increased, the irrigation amount was 80, 120 and 160 m3. The wetting interval of mu-1 was 0 ~ -60 cm, 0 ~ 80 cm and 0 ~ -100 cm. (4) There is a linear function between the wetting interval of soil moisture and the irrigation amount and irrigation time. The expression is Y = 0.347 X1 + 0.364 X2-65.538. (5) The corresponding irrigation cycle will be extended by 2 ~ 4 days for every 40 m3 .mu-1 increase in irrigation volume.