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Journal of Agriculture ›› 2023, Vol. 13 ›› Issue (4): 61-65.doi: 10.11923/j.issn.2095-4050.cjas2022-0167

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Abundance-Deficiency Index of Soil Available Potassium and Appropriate Fertilizer Application Rates for Peach Planting in China

ZHANG Ming1(), LV Zhiwei2(), SUN Hongren3(), ZHANG Jiping4, LV Yucai4, LIU Yuanqing1   

  1. 1 Agriculture and Rural Bureau of Mengyin County, Mengyin 276200, Shandong, China
    2 School of Life Sciences, Liaocheng University, Liaocheng 252000, Shandong, China
    3 College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China
    4 Beijing Liukai Agriculture Sci. &Tech. Co., Ltd., Beijing 100095, China
  • Received:2022-11-18 Revised:2023-01-30 Online:2023-04-20 Published:2023-04-18

Abstract:

To provide guidance for soil potassium application in peach planting, the new application formulas of “scattered experimental data integration method” and “nutrient balance-soil fertility difference subtraction method” were used to study the index of soil available K abundance-deficiency and the appropriate rates of potassium application in peach planting in China. The results showed that soil available K index in peach planting could be divided into 5 levels, which were ≥312, 170-312, 92-170, 50-92 and <50 mg/kg, respectively, from level 1 to 5. When the target yield of peach was 15-60 t/hm2 and the utilization rate of potassium was 50%, the suitable application rate of available K for level 1 to 5 was 0-0, 19-76, 38-151, 57-227 and 76-302 kg/hm2, respectively. In this study, the recommended fertilization system of available K according to its abundance-deficiency index in peach planting soil in China was established and a corresponding basis was provided for soil testing and potassium application.

Key words: peach, soil testing and fertilizer recommendation, soil available K, abundance-deficiency index, fertilizer application rate