【摘要】 为了寻求适宜于核桃水肥一体化种植中合理的水肥配比,以4年生香玲核桃为研究对象,探讨不同灌溉施肥配比的水肥一体化在核桃栽培中节水节肥增产效能上的影响。研究结果表明:(1)生育期内各处理叶绿素含量均呈"单峰"曲线变化,随生育期的推进呈先增大后减小的趋势;(2)各处理核桃树LAI值均呈现先增大后降低的变化趋势,其中W2T2处理时,LAI最大,且提高光合速率;(3)随着灌溉施肥的增加,各处理核桃果实产量的变化均表现为先增大后趋于稳定,在W2T2处理时,达平稳状态;(4)随着水、肥供给量的增加,核桃蛋白质脂肪含量均呈现先增后下降的趋势,且在处理W2T2时,果实品质达最优。综上所述,滴灌条件下,处理W2T2的水肥组合模式不仅减少了水肥的投入量,而且能够促进核桃生长、确保产量,同时改善了果实品质并大幅度提高了水肥利用效率,是比较适宜核桃水肥一体化管理的新模式。更多还原

【Abstract】 In order to find a suitable water-fertilizer ratio suitable for walnut water and fertilizer integrated planting, this paper took 4 years old Xiangling walnut as the research object, and discussed the integration of water and fertilizer with different fertigation ratios in the cultivation of water-saving and fertilizer production in walnut cultivation. The results showed that: 1 The chlorophyll content of each treatment showed a "single peak" curve during the growth period, and increased first and then decreased with the growth period; 2 The change of LAI value of walnut trees in each treatment was consistent with a trend of increasing first and then decreasing, and the LAI of W2T2 treatment was the largest, and the photosynthetic rate was increased. 3 With the increase of fertigation, the yield of walnut fruit in each treatment increased first and then stabilized, and reached a steady state in W2T2 treatment; 4 With the increase of water and fertilizer supply, the fat content of walnut protein increased first and then decreased, and the quality of fruit was optimal in W2T2 treatment. In summary, under the condition of drip irrigation, the water and fertilizer combination model of W2T2 treatment not only reduced the input of water and fertilizer, but also promoted the growth of walnuts,ensured the yield, improved the fruit quality and greatly improved the efficiency of water and fertilizer utilization. The W2T2 treatment was a new model that suitable for integrated management of water and fertilizer.更多还原