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Moisture conditions are the main factors to affect the physiology, yield and quality of cherry tomato, water stress can promote the vegetable root development, and to lay the basis of the material and energy yield formation and improve. Water stress can improve the quality of the fruit, but will affect crop yields, sufficient irrigation can increase fruit yield, but will reduce the fruit sugars, organic acids, soluble solids content of both fruit quality, and how both can increase crop yields and improve water effective use efficiency and water consumption by predecessors have done a lot of research and pointed out that the soil moisture field maximum holding capacity of 70% to 80% of the highest crop yields, but on how to carry out a systematic and scientific phased water strategy which further enhance its yield and water use efficiency is still a lack of in-depth studies. In view of this, the trial cherry tomatoes as the research object, change water treatment on the yield and quality of cherry tomato growth stages, to provide a theoretical basis for the development of rational water use mode. Experimental greenhouse cherry tomato, Yangling, Shaanxi, Northwest Agriculture and Forestry University of Science and Technology of Soil and Water Conservation Institute Proving Ground solar greenhouse impermeable cell, through the control of the whole growth period of five soil moisture levels in 2009 (soil moisture field capacity (θ Tin ) 50% to 60%, from 60% to 70%, 70% to 80%, 80% to 90%, 90% and 100%, respectively, were used in the W 1 , W 2 , W 3 , W 4 , W 5 said) different irrigation levels on greenhouse cherry tomato yield, quality and water use efficiency; 2010 through control of the whole growth period of four stage six soil moisture treatments (T 1 : DDDD T 2 : ZGGZ, T 3 : ZZZZ, T 4 : ZGZG, T 5 : GGGG, T < sub> 6 : GZZG, wherein the D: 50% ~ 60%, Z: 70% to 80%, G: 90% ~ 100%), water treatment with a different English letters in order to distinguish it from 2009 studies Changed Watering solar greenhouse effect of the quality of cherry tomato, analysis of the of variable water during the Cherry tomato yield and water use efficiency (W U E). Greenhouse field trials for two years in a row through 2009-2010 to study the relationship between solar greenhouse cherry tomato water consumption, water law and yield varying water production by the different periods of the cherry tomato application Jensen model obtained the moisture sensitive index of the various stages of fitting a cherry tomato water - productivity function. The main findings are as follows: 1 cherry tomato yield, quality and soil moisture is closely related to W 3 processing yield and water use efficiency of the highest, respectively 6.70kg / m 2 sup> and 24.64kg / m , of W 1 , W 2 the W 4 and W 5 production with W 3 , compared, respectively 39.70%, 22.53%, 3.43% and 20.30%. The W 3 with W of 4 cherry tomato yields under processing differences did not reach a significant, but W 4 water use efficiency of 19.84 kg / m 3 , a greater difference between the W 3 water use efficiency, five deal with water use efficiency: W 3 gt; W 2 gt; W 1 gt; W 4 gt; W 5 . Suitable soil moisture (70% to 80%) can not only improve the yield of cherry tomato, but also improve the efficiency of water use, water use efficiency increased with increasing irrigation amount decreased, and the highest water use efficiency in the range of 70% to 80%. 2. Cherry tomato yield and soil varying water regulation is closely related to, T 1 T 2 , T 3 , T 6 yield T 4 , respectively, compared to a decrease of 65.76%, 52.02%, 3.89% and 13.60%; efficiency of water use T 4 were reduced compared to 9.00% 19.09%, 9.97%, 18.21%, 43.13%. Deficit irrigation will affect cherry tomato soluble sugars, organic acids, sugar-acid ratio and Vc such as quality, T 1 the quality of the best, T 4 second, T 6 lowest quality indicators. Comprehensive analysis: early adoption of 70% to 80%, with 90% to 100% early results, the results of the mid-70% to 80%, results of the latter part of the irrigation and water consumption of 90% to 100% of the processing than previous studies The whole growth period from 70% to 80% of the irrigation water treatments, whether production or water use efficiency and fruit quality best. 3 cherry tomato water consumption showing the seedling stage small, flowering and fruiting period begins to increase, the results peak results the latter part of the law, the water peak between the results peak, cherry tomatoes total output, total water consumption was secondary parabolic relationship, the best irrigation amount of 345 mm, the sensitive index of the water production function as a result of peak gt; results late gt; the the fruition period gt; seedling stage, and cherry tomato water law is basically the same. The solar greenhouse cherry tomato water management should be based on the variation of the water sensitive index to determine the irrigation scheme, moderate water control in seedling and flowering stage, in particular, to ensure that the result of the peak and the results of the final water supply, through a phased water control, more precise, more scientific, and to achieve the goal of water conservation and efficient water management. Integrated at different growth stages cherry tomato water consumption regularity, the relationship between water consumption and yield per unit area and the growth stages moisture sensitive index following conclusions: cherry tomato in solar greenhouse seedling stage, flowering and fruiting period results peak and The results late keep 70% to 80%, 90% and 100%, respectively, from 70% to 80% and 90% to 100% of field capacity can achieve water yield.
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