| 刘勇,魏清江,杨莉,刘德春,胡威.新余蜜橘园土壤和叶片养分现状分析[J].中国南方果树,2020,49(1): |
| 新余蜜橘园土壤和叶片养分现状分析 |
| Soil and leaf nutrient status of citrus orchards in Xinyu |
| 投稿时间：2019-09-05 修订日期：2019-10-05 |
| DOI：10.13938/j.issn.1007-1431.20190505 |
| 中文关键词: 新余蜜橘 土壤养分 叶片养分 相关分析 |
| 英文关键词:Xinyu tangerine soil nutrient leaf nutrient correlation analysis |
| 基金项目:江西省柑橘产业技术体系(JXARS-07) |
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| 摘要点击次数: 2090 |
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| 中文摘要: |
| 为了解新余蜜橘养分状况，对新余市37个橘园土壤和叶片的营养元素含量进行了测定。结果表明，27%的新余蜜橘园土壤偏酸性，35.1%的土壤有机质含量低于适宜标准。土壤碱解N、速效P和K含量不足的比例分别54%、94.6%和67.6%。土壤交换性Ca和Mg含量在所有果园土壤中均不足。相反，土壤有效Fe、Mn和Cu含量的超标比例分别为100%、48.6%和48.7%。树体叶片元素分析表明：N含量偏低比例为32.4%，超标比例为43.2%；叶片P和K含量以偏低为主，比例分别为62.2%和75.7%；Ca含量有16.2%的果园偏低；Mg含量偏低和适量的比例均为43.2%；微量养分Fe和Mn含量偏高比例分别为54.1%和43.2%，Cu含量普遍适量，Zn含量偏低和缺乏比例均为40.5%。相关分析表明，除P、Mg和Cu外，其他元素含量在相应的土壤和叶片中均显著正相关。综上所述，新余蜜橘管理过程中需重视提高土壤pH值和有机质含量，补充P、K和Zn营养，同时控制Fe、Mn和Cu使用量。 |
| 英文摘要: |
| To obtain the nutrient status of Xinyu tangerine, the soil and leaf mineral elements of 37 orchards in Xinyu city were determined. Results showed that 27% soils were relatively acid, and 35.1% soil organic matter contents were below the optimum standard. The soil available N, P, and K contents were insufficient (low or deficient), with proportions of 54%, 94.6%, and 67.6%, respectively. Meanwhile, all of the orchards showed insufficient contents of Ca and Mg. In contrast, the soli Fe, Mn, and Cu contents were 100%, 48.6%, and 48.7% above the optimum standard, respectively. Leaf nutrient analysis revealed that 32.4% and 43.2% orchards showed low and overproof levels of N content. The leaf P and K contents were mostly low, with proportions of 62.2% and 75.7%, respectively. Meanwhile, 16.2% of leaf Ca contents were low. Proportions of orchards with low and optimum K content were both 43.2%. As for leaf microelement contents, there were 54.1% and 43.2% samples showed high Fe and Mn contents. The leaf Cu were mostly optimum, while leaf Zn were mostly insufficient, with low and deficient proportions of 40.5%. It was further found that contents of all the determined elements exception for P, Mg, and Cu in the soils showed positive correlations with corresponding elements in the leaves. Collectively, during the managing process of Xinyu tangerine, it should attach importance to increase soil pH and organic matter content, add P, K, and Zn fertilizer, and control the dosage of Fe, Mn, and Cu. |
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