The Reaserch On Soil Evaporation Characteristics Of Ziziphus Jujube In Juvenile Phase Under Different Irrigations

Tarim Basin is one of the major dates planted forests, However, due to the region dates Park commonly used type of extensive flooding irrigation methods, thus leading to serious waste of water resources in the field, which to some extent, restricted the rapid development of Aksu Prefecture jujube industry. Therefore, studies on the region’s water-saving irrigation Jujube Yard also increasing. Extensive irrigation methods irrigation process in the field of water due to excessive lead to a lot of evaporation, subsequently will lead to soil salinity jujube orchard soil surface migration, aggregation, increased soil salinization and water evaporation in jujube orchard trees do not participate date any physiological growth of the tree, a non-water part of the agricultural production. The evaporation of different sizes jujube orchard irrigation methods produced are not the same, for this experiment in Aksu Prefecture of young and middle age jujube jujube were studied for drip irrigation(I1), Pit Irrigation(I2), young and middle age jujube orchard irrigation(I3) irrigation methods under the leaf stage, soil evaporation characteristics of each growth period of flowering, fruit set, fruit enlargement, mature fruit, leaves and the like in the period correlation between leaf expansion, flowering, fruit set, fruit enlargement, fruit ripening, leaves of different growth stages of evaporation intensity with the outside world meteorological factors were analyzed, the final result is determined by analysis of variance for young and middle age Aksu Prefecture best Water Saving irrigation of jujube Park. Results obtained are as follows:(1) obtained by the above analysis, the same irrigation methods, young and middle age of dates in the garden soil evaporation intensity growth period are as follows: defoliation <fruit ripening <fruit enlargement <leaf expansion period <flowering of <fruit set.,, Under no condition I1 of flowering fruit trees between the average daily soil evaporation between leaf stage significant difference(p> 0.05), fruit enlargement, fruit maturity, the difference between any two leaves of a significant(p <0.05), while the first three of childbearing age in the average daily evaporation intensity was significantly higher than jujube after three periods(p <0.05); the conditions under I2 fruit, flowering, trees between soil and leaf of the day there is no significant difference(p> 0.05) between the amount of evaporation, and the difference between fruit enlargement, fruit ripening, leaf pairwise significant(p <0.05), while the age of the first three days of growing period jujube evaporation intensity were significantly higher than after three periods(p <0.05); no significant difference(p daily evaporation on soil conditions under I3 fruiting and flowering stage> 0.05), leaf expansion, enlargement of the fruit, fruit maturity, the difference between any two leaves of a significant(p <0.05), the same, the average daily evaporation under I3 growth of the first three conditions were significantly higher than after three periods(p <0.05).(2) I1, I2, I3 irrigation, young Jujube Yard, the distance trunk 20 cm, between jujube 60 cm, 100 cm at the whole growth of single Keke daily soil evaporation intensity are I3> I1> I2 and I3 respectively I1, different growth stages are daily volume evaporated into a very significant difference(p <0.01) under the condition I2.(3) I1, I2, I3 under conditions of young jujube Different Stages in relation to the size of the total evaporation: I3> I1> I2, while I1, I2, I3 total different growth stages under conditions of evaporation pairwise comparison were extremely significant differences(p <0.01); the relationship between the size of the total evaporation under the same circumstances, I1, I2, I3 condition age jujube different growth stages is: I3> I1> I2, and I1, I2 total growth period under different conditions of evaporation I3 pairwise comparison were extremely significant differences(p <0.01).(4) under the same conditions for irrigation, meteorological factors(solar radiation, temperature, wind speed, air humidity, etc.) on Jujube Orchard Soil Evaporation intensity as follows: solar radiation> wind velocity> temperature> relative humidity, so the net solar radiation, wind speed, temperature is the main factor of age jujube orchard trees between soil evaporation, and the relative humidity of the air and soil evaporation Jujube Yard negative correlation, ie, the greater the relative humidity of the air between the trees smaller soil evaporation intensity and location of the test case of the Northwest arid climate, scarce rainfall, low rainfall and therefore affect the test.