阳山水蜜桃园肥料投入及不同种植年限土壤养分累积现状
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土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)

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国家重点研发计划项目(2021YFD1700801)资助


Characteristics of Fertilizer Inputs and Soil Nutrient Accumulation in Yangshan Juicy Peach Orchard with Different Cultivation Years
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State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences

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Supported by the National Key Research and Development Program of China(No. 2021YFD1700801)

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    摘要:

    阳山水蜜桃为中国国家地理标志产品,土肥科学管理对其产业的可持续发展至关重要。选择4个主要水蜜桃种植镇含不同种植年限的33块桃园为研究对象,通过实地问卷调查结合室内土壤样品分析,以摸清水蜜桃园肥料投入结构,分析桃园土壤养分丰缺状况及生态化学计量特征。结果表明:桃园氮、磷、钾平均总投入量分别为527 kg?hm-2(以N计)、362 kg?hm-2(以P2O5计)、545 kg?hm-2(以K2O 计),以三元复合肥为主的化肥来源占比较大,而菜籽饼、牛粪、鸡粪、秸秆等有机来源的氮、磷、钾分别占投入总量的27.8%、15.4%、15.6%。种植大于10年的桃园0~20 cm和20~40 cm土层土壤pH均达到了强酸性水平(4.5

    Abstract:

    【Objective】The objective of this study was to clarify the status of soil nutrient accumulation in the peach orchard of Taihu Watershed. It aimed to provide a guide for the green production mode of peach orchard. 【Method】In this study, a total of 66 soil samples were collected from 33 juicy peach orchards, with different cultivation years in the four main planting towns. Combined with field research and laboratory analysis, the fertilizer input status, soil nutrient content and ecological stoichiometry characteristics were analyzed. 【Result】The results showed that the average total nutrient inputs was N 527 kg?hm-2, P2O5 362 kg?hm-2 and K2O 545 kg?hm-2, and the proportion of organic inputs were 27.8%, 15.4% and 15.6% respectively. Here chemical fertilizer was mainly NPK compound fertilizer, while the types of organic fertilizer applied mainly included rapeseed cake, livestock manure, and composting straw. Over-application of fertilizer could aggravate soil acidification and nutrient accumulation, soil pH in 0-20 cm and 20-40 cm soil layers of planted >10 years peach orchard both decreased by more than 1.5 units, which belonged to strongly acidic soil (4.510 years peach orchard reached level 1. The soil NO3--N concentration of the peach orchard was up to 19.3-33.1 mg?kg-1. The annual apparent surplus of N, P2O5, K2O were 343 kg?hm-2, 238 kg?hm-2 and 240 kg?hm-1, respectively. 【Conclusion】The excessive nutrient input in the peach orchard has aggravated soil acidification and nutrient accumulation. A high concentration of nitrogen and phosphorus accumulated in the soil might increase the environmental loss risk. Therefore, it is necessary to put forward a green production model for the peach production.

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杨广,汪玉,王慎强,赵旭.阳山水蜜桃园肥料投入及不同种植年限土壤养分累积现状[J].土壤学报,DOI:10.11766/trxb202204060091,[待发表]
YANG Guang, WANG Yu, WANG Shenqiang, ZHAO Xu. Characteristics of Fertilizer Inputs and Soil Nutrient Accumulation in Yangshan Juicy Peach Orchard with Different Cultivation Years[J]. Acta Pedologica Sinica, DOI:10.11766/trxb202204060091,[In Press]

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  • 收稿日期:2022-03-04
  • 最后修改日期:2022-06-23
  • 录用日期:2022-08-18
  • 在线发布日期: 2022-08-23
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