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Acta Prataculturae Sinica ›› 2012, Vol. 21 ›› Issue (5): 274-284.

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The effects of N,P,K, and Ca on plant growth and nutrient content of Lily leaves

ZHU Qiao, PAN Yuan-zhi, ZHAO Li   

  1. College of Landscape Architecture, Sichuan Agricultural University, Wenjiang 611130, China
  • Received:2011-09-19 Online:2012-05-25 Published:2012-10-20

Abstract: The effects of different fertilizations on plant height, leaf number, leaf area, and chlorophyll and on nitrogen, phosphorus, potassium, calcium changes in leaf indexes of potted lilies were studied using an orthogonal design to explore fertilizer requirements and provide a basis for standardizing cultivation of lilies. 1) Nitrogen fertilizer had significant effects and was generally highly significantly positively correlated with plant height, leaf area and chlorophyll content. Plant height, leaf number, leaf area and chlorophyll were highest when nitrogen was 300 mg/kg. Phosphorus and calcium were positively correlated with plant height, leaf number, leaf area and chlorophyll content. Leaf area and chlorophyll content were highest when phosphorus was 100-150 mg/kg, potassium was150 mg/kg, and calcium was 120 mg/kg. 2) During the whole growth period, total leaf nutrient content was highest when nitrogen was 200-300 mg/kg, phosphorus was 100 mg/kg and potassium was 0-150 mg/kg. There was an increase to a maximum at budding or initial bloom stages, and then either a slight or a strong decrease. Under different fertilization ratios, the contents of leaf nutrition differed significantly after the budding stage. 3) The best combination was: N, 300 mg/kg; P, 100 mg/kg; K,150 mg/kg; and Ca, 120 mg/kg. This ratio led to optimal growth conditions, highest growth speed, best leaf quality, highest leaf nutrient content and longest period of P, K, and Ca accumulation of the Lily.

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