|
| 安岳县柠檬种植区土壤养分状况分析与肥力等级评价 |
| Analysis of soil nutrient status and evaluation of fertility level in lemon growing area of Anyue County |
| 投稿时间：2024-05-13 |
| DOI：10.13254/j.jare.2024.0317 |
| 中文关键词: 柠檬种植区 土壤养分 养分相关性 土壤肥力 微量元素 |
| 英文关键词: lemon planting area soil nutrient nutrient correlation soil fertility trace element |
| 基金项目:国投罗钾科技开发项目（新钾技合字<2022>73号） |
|
| 摘要点击次数: 564 |
| 全文下载次数: 938 |
| 中文摘要: |
| 为明确四川省安岳县柠檬种植区土壤养分分布状况及肥力水平，评估柠檬种植区化肥减施潜力并合理施肥，本研究于2022年采集安岳县柠檬种植区土壤样品176份，测定土壤的pH值、有机质及养分元素含量，分析土壤样品的养分丰缺状况和相关性，并用隶属度函数计算土壤肥力等级。结果表明：柠檬种植区pH值在5.52～7.82之间，大部分土壤pH适宜柠檬生长；土壤有机质含量平均值为22.88 g·kg-1，处于中等水平，其中25%的点位有机质比较缺乏，含量均低于15.0 g·kg-1。整个研究区域中速效钾含量较高，其平均值为214.23 mg·kg-1；碱解氮和有效磷含量相对不足，其缺乏水平的比例分别为60%和46%，分别低于90 mg·kg-1和10 mg·kg-1；有效铁、有效锰、有效锌、有效铜元素总体上含量较高。在土壤化学性质上，pH、有机质、碱解氮和有效磷对其他有效养分的区域变异性存在一定影响。从不同乡镇肥力评价来看，土壤肥力指数均在0.33~0.74之间，平均值为0.52，大部分乡镇土壤肥力水平均处于一般等级。研究表明，在柠檬种植区域内大部分土壤pH值都适宜柠檬生长，土壤中有机质、有效铁、有效锰、有效锌、有效铜含量少部分处于缺乏水平，碱解氮和有效磷含量缺乏占比较大。由此，根据土壤养分评价结果，整体上可以适当降低钾肥的用量，西部以及北部种植区域可适当增施磷肥以及适量增施锰、锌肥，中部和东部种植区域可适量增施有机肥和铁肥。 |
| 英文摘要: |
| This study aimed to clarify the distribution of soil nutrients and the fertility level of lemon growing areas in Anyue County, Sichuan Province, and to provide reference suggestions for assessing the potential of chemical fertilizer reduction in lemon growing areas and rational fertilization of lemons. In 2022, 176 soil samples were collected from lemon growing areas in Anyue County, and the pH, organic matter and nutrient content of the soils were determined to analyze the nutrient abundance and deficiency status and correlation of the soil samples, and to calculate the soil fertility level by using the affiliation function.The results showed that the pH value of lemon planting area was between 5.52 and 7.82, and most of the soil pH was suitable for lemon growth; the average level of soil organic matter content was 22.88 g·kg-1, which was at a medium level, and 25% of the points with a comparative lack of organic matter which were lower than 15.0 g · kg-1. The content of quick-acting potassium was higher in the whole study area, with an average of 214.23 mg · kg-1. The alkaline dissolved nitrogen and effective phosphorus contents were relatively deficient, with 60% and 46% deficiency levels below 90 mg· kg-1 and 10 mg·kg-1 respectively; effective iron, effective manganese, effective zinc, and effective copper elements in general were high. In terms of soil chemical properties, pH, organic matter, alkaline dissolved nitrogen and effective phosphorus had influence on the regional variability of other effective nutrients. From the evaluation of fertility in different townships, the soil fertility index was between 0.33 and 0.74, with an average level of 0.52, and the soil fertility level of most townships was in the general grade. Comprehensive research showed that most of the soil pH values in the lemon planting area were suitable for lemon growth, a small portion of the organic matter and effective Fe-Mn-Zn -Cu content of the soil were at the deficiency level, and the alkaline nitrogen and effective phosphorus content were at the deficiency level in a larger proportion of the soil. Therefore, according to the results of soil nutrient evaluation, potassium fertilizer should be reduced, the western and northern growing areas can be properly fertilized with additional phosphorus fertilizers as well as additional manganese and zinc fertilizers, the central and eastern planting areas can be appropriate to increase the amount of organic fertilizers and iron fertilizers. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
