| 中国桃土壤速效钾丰缺指标与适宜施钾量研究 |
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| 引用本文： | 张明,吕志伟,孙洪仁,张吉萍,吕玉才,刘元青.中国桃土壤速效钾丰缺指标与适宜施钾量研究[J].农学学报,2023,13(4):61-65. |
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| 作者姓名： | 张明 吕志伟 孙洪仁 张吉萍 吕玉才 刘元青 |
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| 基金项目： | 国家现代农业产业技术体系建设项目“现代牧草产业技术体系建设”(CARS-35); 国家自然科学基金项目“UV-B辐射增强对不同结瘤能力大豆地下部及根际微生物多样性的影响”(31200387) |
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| 摘 要： | 为了科学指导中国的桃测土施钾，采用“零散实验数据整合法”和“养分平衡—地力差减法”新应用公式，开展了中国桃土壤速效钾丰缺指标与适宜施钾量研究。结果表明：中国桃土壤速效钾第1~5级指标依次为≥312、170~312、92~170、50~92、<50 mg/kg。当桃的目标产量为15~60 t/hm2、钾肥利用率为50%时，桃土壤速效钾第1~5级的适宜施钾量范围依次为0~0、19~76、38~151、57~227、76~302 kg/hm2。本研究初步建立了中国桃土壤速效钾丰缺指标推荐施肥系统，为中国桃测土施钾提供了相应的科学依据。
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| 关 键 词： | 桃 测土施肥 土壤速效钾 丰缺指标 施肥量 |
| 收稿时间： | 2022-11-18 |
Abundance-Deficiency Index of Soil Available Potassium and Appropriate Fertilizer Application Rates for Peach Planting in China |
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| ZHANG Ming,LV Zhiwei,SUN Hongren,ZHANG Jiping,LV Yucai,LIU Yuanqing.Abundance-Deficiency Index of Soil Available Potassium and Appropriate Fertilizer Application Rates for Peach Planting in China[J].Journal of Agriculture,2023,13(4):61-65. |
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| Authors: | ZHANG Ming LV Zhiwei SUN Hongren ZHANG Jiping LV Yucai LIU Yuanqing |
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| 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. |
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| Keywords: | peach soil testing and fertilizer recommendation soil available K abundance-deficiency index fertilizer application rate |
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