| This paper is based on most single technologies and a few technologies combination, we will combine four different moisture conserving technologies with ground drip irrigation technology in order to further exploration water-saving potential and approach of drip irrigation developing located trials in mountain jujube orchard. This paper concentrates specially on effect of moisture conserving drip irrigation in mountain jujube orchard on soil moisture and temperature, jujube growth in different treatments of moisture conserving drip irrigation(the control (CK), deep straw mulch(T1), deep straw mulch with surface straw mulch(T2), polythene mulch(T3) and surface straw mulch(T4)). We want to further know how ways and how much of water-saving and increasing yield by the experiments.(1) Treatments of moisture conserving drip irrigation can affect the changing rule of soil temperature in Time and Space; Mean soil temperature of different moisture conserving treatments during our experimental period: T3>T1>CK>T2>T4; Soil temperature decreased gradually with soil profile, reduced velocity of soil temperature: T1>CK>T3>T4>T2, the maximum speed: T1=3.42℃/5cm, the minimum velocity: T2=2.90℃/ 5cm, T1 is 1.175 times of the T2; Increasing and reducing soil temperature in different soil layers are from ground to underground, the highest temperature and the lowest temperature of different soil layers'appearance are the same law also.(2) Different moisture conserving techonolegies can significantly inhibit soil evaporation, which is 36.17%~96.46% of the control. Soil aggregate amount of evaporation in experimental period: CK > T1 > T2 > T4 > T3, espective soil evaporational ratio are 56.37%, 54.38%, 28.70%, 20.81 % and 20.39%; Compared with control, soil accumulation reductional evaporation: T1=1.47mm, T2=20.33mm, T3=26.42mm, T4=26.12mm, it is that T1 can reduce soil evaporation 0.98m~3/667m~2, T2 can reduce soil evaporation 13.56 m~3/667m~2, T3 can reduce soil evaporation 17.62m~3/667m~2, T4 can reduce soil evaporation 17.42 m3/667m2.(3) Treatments of moisture conserving drip irrigation can influence the rule on distribution of soil moisture and can increase soil water storage. Soil moisture in experimental period:: T2 > T4 > T1 > CK > T3; soil moisture is max in 30cm soil depth, before 30cm soil depth it is more high than under 30cm, soil moisture of moisture conservings all more high than the control; Mean Soil waterstorage (0-150cm) T2 > T4 > T1 > CK > T3, thay are respectively higher the control 41.44mm, 20.73mm,11.69mm and -6.77mm, it is that save water 33.04%, 16.53%, 9.32% and -5.40%. (Plastic mulch is impervious because rainfall is prevented to infiltrate into soil under plastic mulch .)(4) Moisture conserving drip irrigation is advantageous to jujube growth and promote yield per plant. They can increase jujube diameter, jujube current-year branch, jujube hundred leaf weight and mean fruit weight; Yield per plant of T1,T2,T3 and T4: 2.98kg per tree,3.47kg per tree,2.87kg per tree and 3.57kg per tree,compared with the control (2.83 kg per tree), thay respectively are 5.21%, 22.70%, 1.41% and 26.04%. The results showed that: T2 and T4 are more water-saving and increasing yied than others, they are saving-water 33.04% and 16.53% ,increasing yield per tree 22.70% and 26.04% comparing with the control.
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