| The distribution characteristics of soil nitrogen and phosphorus nutrients under different planting models in apple orchards |
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| DOI：10.7606/j.issn.1000-7601.2021.06.22 |
| Key Words: planting model apple orchard soil nutrients shallow aggregation correlation |
| Author Name | Affiliation | | DONG Zhenkai | Zhejiang Design Institute of Water Conservancy and Hydroelectric Power , Hangzhou, Zhejiang 310000, China
State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China | | MU Xingmin | State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China
Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources, Yangling, Shaanxi 712100, China | | LI Pengfei | 4. College of Geomatics, Xi'an University of Science and Technology, Xi’an, Shaanxi 710000, China | | ZHAO Peiyi | Institute of Resources, Environment and Testing Technology Sciences, Inner Mongolia Academy of Agriculture and Animal Husbandry, Hohhot, Inner Mongolia 010000, China | | TIAN Yaojin | Zhejiang Design Institute of Water Conservancy and Hydroelectric Power , Hangzhou, Zhejiang 310000, China |
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| Abstract: |
| To study soil nutrient changes under different apple planting modes, samples were collected from apple plantation with two different planting models (dwarfing and arborization) in Qianyang County, Shaanxi Province, to analyze and compare the differences in nitrogen and phosphorus nutrient contents and profile distribution characteristics of the soil based on the contents of total nitrogen, total phosphorus and available phosphorus of 0~100 cm soil depth. The results showed that the nutrient content, except for total phosphorus, of the dwarfed apple orchard soil was significantly lower than that of the arborized apple orchard (P<0.05). The total nitrogen contents of the dwarfed Fuji and Gara apple orchards and arborized Fuji apple orchard were 0.60, 0.63 g·kg-1 and 0.76 g·kg-1, total phosphorus contents were 0.58, 0.56 g·kg-1 and 0.63 g·kg-1, available phosphorus contents were 6.98, 3.48 mg·kg-1 and 51.00 mg·kg-1, respectively, in the soil layer at depth of 0~100 cm. In addition, surface accumulation of total nitrogen, total phosphorus and available phosphorus content was significant, mainly in the 0~10 cm soil layer, in the dwarfed apple orchard (P<0.05). There was a significant correlation between soil nutrient content and soil depth (P<0.05). The change process of soil nutrient content and soil layer depth in the dwarfed apple orchard and arborized apple orchard conformed to the change trend of power function and logarithmic function respectively. |
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