Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (6): 1328-1337.DOI: 10.3969/j.issn.1004-1524.2023.06.10

• Horticultural Science • Previous Articles     Next Articles

Requirement characteristics of nutrient elements in different development stages of Wujiuxiang pear

XU Kai(), ZHAO Deying*(), ZHANG Shaoyu, YAN Shuai, HOU Guixue   

  1. Key Laboratory of Germplasm Resources Utilization of Horticulture Crops of Ministry of Agriculture and Rural Affairs, Key Laboratory of Mineral Nutrition and Efficient Fertilization for Deciduous Fruit of Liaoning, Reserch Institute of Pomology of Chinese Academy of Agricultural Sciences, Xingcheng 125100, Liaoning, China
  • Received:2022-07-22 Online:2023-06-25 Published:2023-07-04

Abstract:

To provide theoretical basis for rational fertilization of pear cultivation, Wujiuxiang pear (Pyrus communis L. cv. Wujiuxiang) was used as test material, the whole plant samples were taken during critical developmental periods to measure the content of different nutrient elements in various parts of the plant and calculate the demand for each nutrient element, and the requirement characteristics was studied. The results showed that the annual demand ratios of macroelements from high to low were nitrogen (N), calcium (Ca), potassium (K), phosphorus (P) and magnesium (Mg), while the annual demand ratios of microelements from high to low were ferrum (Fe), zinc (Zn), manganese (Mn), boron (B) and copper (Cu). Before sprouting, blossom and fruit bearing periods, the highest demand ratio for macroelement was N, and the highest demand ratio for microelement was B. During the fruitlet growth period, the highest ratio for macroelement was K, and the highest ratio of microelement was Zn; During the slow growth period, the highest demand ratio for macroelement was Ca, and the highest demand ratio for microelement was Fe. Before fruit harvest and before dormancy of the tree, the highest demand ratio for macroelement was N, and the highest demand ratio for microelement was Fe. The results of absorption and distribution ratios of nutrient elements at different developmental stages showed that the highest period for N, P, K, Ca, Mg, Cu were before fruit harvest, the highest period of Fe and Zn were the slow growth period, the highest period of Mn was before dormancy of the tree, the highest period of B was blossom and fruit bearing period. The nutrient elecment requirements for producing 1 t fruit of Wujiuxiang pear fruits were N 4.26 kg, P 2.64 kg, K 3.03 kg, Ca 3.93 kg, Mg 1.19 kg, Cu 2.02 g, Fe 65.86 g, Zn 23.09 g, Mn 18.03 g and B 18.00 g.

Key words: Wujiuxiang pear, macroelement, microelement, requirement characteristic

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