The rational use of nutrients is of fundamental importance for obtaining high productivity of high nutritional quality. This work was developed with the aim of evaluating the quality of pepper fruit grown under different fertigation managements and different levels of nitrogen and potassium. The experimental design was of randomised blocks in a 3 x 6 factorial scheme with four replications. The treatments resulted from the combination of three fertigation managements (M1-based on the rate of absorption; M2-monitoring the conductivity of the soil solution; M3-monitoring concentrations of N and K ions in the soil solution) with six levels of N and K (N0K0, N50K50, N100K100, N150K150, N200K200 and N300K300) as a percentage of the recommended dosage for the crop under conventional fertigation (M1) or hydroponics (M2 and M3). Fruit quality was evaluated for the following characteristics: pH, soluble solids, titratable acidity, vitamin C content and the ratio of soluble solids to titratable acidity. The different fertigation managements only affected the levels of soluble solids (SS) and titratable acidity (TA), reducing the SS and TA. The variables under study were adjusted for the levels of N and K using quadratic models.
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机译:合理使用营养素对于获得高营养品质的高生产力至关重要。开展这项工作的目的是评估在不同的施肥管理下以及不同水平的氮和钾水平下种植的胡椒果实的品质。实验设计是在3 x 6阶乘方案中随机分组,具有四个重复。这些处理方法是将三种施肥管理措施(基于吸收率的M1;监测土壤溶液的电导率;监测土壤溶液中N和K离子的浓度的M3)与六个氮素和氮素水平的组合进行的。 K(N0K0,N50K50,N100K100,N150K150,N200K200和N300K300)占常规施肥(M1)或水培法(M2和M3)下作物推荐剂量的百分比。评价水果品质的以下特征:pH,可溶固体,可滴定酸度,维生素C含量以及可溶固体与可滴定酸度的比率。不同的施肥管理措施仅影响可溶性固形物(SS)和可滴定酸度(TA)的水平,从而降低了SS和TA。使用二次模型对研究中的变量进行了氮和钾水平的调整。
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