| Root-irrigation is an advanced technique. It has the advantages of saving water, enhancing yields ,upgrading quality and high utility. Now there is little about red-jujube water requirement and irrigation schedule of root-irrigation. So in practice the conventional irrigation mode is often be used. Drip irrigation reduces soil evaporation among plants, improves evapotranspiration, changes the water requirement of crop. So the schedule of drip irrigation could not be substituted by the conventional irrigation model. in the meantime, Study and develop numerous new saving water method and new the technique to irrigate seem to be is necessity. The experiment to adopt root-irrigation new irrigation way and laws of soil water dynamic state during infiltration period has been analysed and studied the red-jujube water requirement and schedule of root-irrigation The main results are as follows:(1) Theφ32 of root-irrigation tube in the sum settle under the pressure 5.0 Kpa, average flux of the rice discharge opposite sum settle deviation and discharge deviation coefficient of uniformity distinguish to 3.875%, 9.31%.The uniformity even is good. The anti- stops function excellent, the usage time is longer than others.(2) Adopt ing soil moisture instrument Watch Dog 2800 and its transducer SM100 and the laws of soil water dynamic state during infiltration period and soil water redistribution after Irrigation has been analysed. Through field irrigation experiment, The water infiltration root-irrigation is a line infiltration,its showed that Compared to the vertical wetting front the rate of horizontal wetting front was higher when root-irrigation speed reached 87.86 L/h.m and irrigation time is 100min. The shape of the wetting front is elliptoid ,Comparing the dynamic transformation of soil moisture under different models of root-irrigation, the binomial function was found to be the most satisfying. provide theory foundation for root-irrigation system.(3) Applied the equation of Penman-Monteith to reckon the day equally consumes amount of water for two years, analysis the on trial area red-jujube tree consume water regulation: beginning of march till mid- May the day consume amount of water to keep or so in the 2-4 mm, from the end of May till the end of August the day consume amount of water to increase 4-6 mm or so, from the end of August till mid- October the day consume amount of water and descend to 2-3 mm or so.(4)Infuse red-jujube to need water regulation according to the root-irrigation, the assurance root-irrigation infuses the red-jujube feat irrigation system is: The irrigation settles a sum 5865 m 3hm 2, infuse water to settle a sum to 255 m 3hm 2, infuse water to belong to urge bud water from March to the beginning of April, irrigate the period as 12 days. From the end of May to the end of June, the red date gets into a prosperous flower-the young fruit expect and the period has to shorten for 8 days. Get into fruit bigger and bigger to greatly expect from the beginning of July to the beginning of August red date, infuse water period is 7 days and get into a mature period from mid- August to mid- September red-jujube. The period is 10 days. Whole grow to expect to infuse water 21 times.
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