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In order to clarify peaches at different growth stages on water and fertilizer needs, and to explore appropriate peaches nutrient supply mode and reduce fertilizer use, Daejeon peaches provide the basis for the cultivation of fertilizer and water management, this study three-year-old water white peach (Prunus persica cv'Qingshui ') and 12-year old' Datuanmilu 'peach (Prunus persica cv'Datuan milu') as experimental materials, made two related tests. Were investigated N 50ppm, N 100ppm and N 200ppm (to calculate the nitrogen content) concentration, water white peach vegetative growth, fruit quality, fruit and leaf mineral elements content and the tree absorb water and nutrients law; and uses some root restriction way local root domain fertilize, fertilize the traditional way as CK, two kinds of fertilization on soil nutrients, Datuanmilu growth and fruit development. The results showed that: (1) N 100ppm deal more conducive to plant vegetative growth (shoot length and diameter), the growth of total annual shoots and leaf area larger plant photosynthesis and transpiration strong stoma bigger. (2) N 200ppm concentration treatments fruit diameter and mature fruit weight, soluble solids and titratable acid content although better than N 100ppm concentration treatment, but did not show significant differences. (3) peach trees mature fruit and leaf mineral element content analysis showed that: the concentration of nutrient solution on the dry matter content of no significant impact: trace elements Fe and Cu N 100ppm treatment group was significantly higher than N 200ppm treatment groups. The development process, the leaf P, K, Ca, Fe, Zn, Mn, Cu element N 100ppm treatments in relatively high concentration. (4) in the whole fruit development stage, NO3 -1 -N, NH4-N, P, K, Mg, Ca, Fe, Mn, Zn, and Cu absorption volume with nutrient solution concentration the rise of increase, and the N 100ppm concentration, overall well-developed, as we deal with the nitrogen fertilization reference to calculate the amount of fertilizer needed per acre, an annual amount of fertilizer needed per acre and water consumption. (5) Local root domain root domain soil fertility mode of EC, organic matter, nitrate, ammonium nitrogen, phosphorus, potassium and effective active magnesium content increased significantly, local root domain fertilization on soil improvement has significant effect. (6) local area under the root domain fertilize shoot length and shoot diameter growth was significantly lower than traditional cultivation, although various developmental stages of the root domain fertilize local fruit diameter, longitudinal diameter, lateral diameter and fresh weight showed a greater than traditional cultivation, but the difference was not significant. In early fruit development, local root domain fertilization under soluble solids content was significantly higher than traditional cultivation. (7) two kinds of fertilization methods on a large number of leaves and fruits, and trace element content changes have a significant impact, the blade elements such as Fe and Mn, the most obvious difference, while elemental Zn to maturity with the traditional cultivation mode when significant differences disappear. Addition of Mn, the local root domain fertilize fruit cultivation trace concentrations are lower than traditional cultivation, especially elements such as Fe and Zn.
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