水溶肥滴灌施肥对马斯特红蛇苹果品质和产量的影响OA

Taking 6-year-old dwarf and high-density planted'Master Red Snake'apples as test materials,under the climatic conditions of the arid region in the northwest,the effects of drip fertigation technology with water-soluble fertilizers on the physiological characteristics,fruit quality and yield of apple trees were systematically studied.The results showed that the treatment with a water-soluble fertilizer application rate of 225 kg/hm2(T7)significantly improved the soil water and fertilizer conditions.The leaf area index reached 3.82,a 30.82％increase compared with traditional irrigation and fertilization(control).It significantly improved the fruit quality.The single fruit weight reached 282.5 g,the longitudinal diameter increased by 14.10％compared with the control,the transverse diameter increased by 3.59％compared with the control,the fruit shape index reached 0.99,the coloration degree reached 100.0％,the soluble solid content was 14.81％,a 9.46％increase compared with the control,the hardness was 9.38 kg/cm2,a 23.10％increase compared with the control,and the solid-acid ratio was 87.12,a 125.35％increase compared with the control.The yield was 55.92 t/hm2,and the commercial fruit rate reached 91.8％,with a 26.66％increase in production compared with the control,showing a significant synergistic effect of water and fertilizer.Comprehensive analysis showed that the T7 treatment was the optimal water and fertilizer management plan for apple orchards in the arid region of the northwest.The research results provided a theoretical basis and technical support for the precise water and fertilizer management of apple orchards in the arid region of the northwest.