| Apricot (Prunus Armenniaca), rosaceae, prunus, deciduous arbors, native to China. Apricot has a strong stress resistance, large nutritive and medicinal value. Apricot is also one of the main plantings in mountain, hilly, and arid areas to accumulate wealth. The research area (You Jia-zuo village ,Tang county) is located on the eastern piedmont , low mountains and hills of Taihang Mountain at 100 m to 500 m altitude. This region rainfall is few, drought significantly, the water resource between supply and demand contradiction sharpen, soil nutrient content is relatively low. How to increase irrigation water use efficiency and fertilizer use efficiency has become present research focus of agricultural water saving and rational fertilization. The field experiment of 5-year-old Apricot Sol Aureus orchard, designed to have three different treatments (soil moisture conserving irrigation treatment, fertiliztion treatment and irrigation technique of mulching -fertilization treatment), to study the effects of different irrigation times , irrigation amount, soil moisture keeping measure on soil water dynamics and different fertilizer application method on the soil nutrient, leaf and fruit nutrient concentration, and yield variation regularities. In order to support the provide data for rational fertilization and water saving irrigation. The main results were as follows:1. Before the harvest stage, the added irrigation quantity could increase water content. During growth period, the irrigation quantity of conventional irrigation (CK), drip irrigation (DI), the plastic mulched drip irrigation (PMDI) and plastic mulched of regulated drip irrigation (PMRDI) were 66.6 mm, 33.4 mm, 33.4 mm and 25.0 mm, respectively. The yield of each per plant was 9.79 kg, 9.10 kg, 9.55 kg and 8.29 kg. Compared to the conventional irrigation, the plastic mulched drip irrigation, drip irrigation and plastic mulched of regulated drip irrigation saved water by 49.85%, 49.85% and 62.46%, respectively. Compared to the conventional irrigation, the plastic mulched drip irrigation, drip irrigation and plastic mulched of regulated drip irrigation decreased water consumption by 8.18%, 9.06% and 11.39%, respectively. The plastic mulched drip irrigation treatment of water use efficiency was 7.934 kg·m-3, which was the highest among four treatments. The soluble solids of plastic mulched drip irrigation treatment respectively increase 2.38%, 8.92% and 12.95% to plastic mulched of regulated drip irrigation, drip irrigation and conventional irrigation treatment. 2. Compared to non-fertilization (NF), fertilization could increase 100 cm soil nutrient concentration, leaf and fruit total nitrogen, phosphorus and potassium concentration. Compared with deep-ditch fertilization (NR) and drip-deep-ditch fertigation, fertigation (NW) treatment had the higher soil nutrient concentration. Compared with non-fertilization, deep-ditch fertilization and drip-deep-ditch fertigation, fertigation treatment could increase the leaf total nitrogen concentration, the increased data as 9.12%, 0.62% and 0.94%, respectively. Fertilization could significantly increase fruit length, fruit width, fruit shape index and fruit yield. The yield per plant would be increased under fertigation , deep-ditch fertilization and drip-deep-ditch fertigation, the increased data as 34.75% , 34.48% and25.00%, respectively. The difference was significant of the soluble solids, total sugar, and total acids content among the fourth treatments. The fertigation treatment of soluble solids was the highest among the fourth treatments. The soluble solids of fertigation treatment respectively increase 2.28%,5.16% and 8.00% to deep-ditch fertilization,drip-deep-ditch fertigation and non-fertilization treatment.3. In the same fertilizer amount condition, the yield of fertigation(NW) was significantly greater than conventional irrigation and fertilization(CK). Compared with fertigation, the fruit yield and water consumption increased on the film-covered moisture conservation measures. Compared to the conventional irrigation and fertilization , the plastic mulched fertigation (PM+NW) and fertigation (NW) raised water use efficiency by 37.67% and 32.28%, respectively. The plastic mulched fertigation treatment of water use efficiency was 8.782 kg·m-3, which was the highest among three treatments.
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