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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (12): 252-256.doi: 10.11924/j.issn.1000-6850.casb14110077

所属专题： 烟草种植与生产

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

广元植烟区土壤养分空间分布特征研究

余垚颖1,王明富1,顾会战2,郭应菊1,喻 晓2,杨 雪1   

  1. (1四川省农业科学院植物保护研究所,成都 610066；2四川省烟草公司广元市公司,四川广元 628000）
  • 收稿日期:2014-11-13 修回日期:2015-04-13 接受日期:2014-12-04 出版日期:2015-05-06 发布日期:2015-05-06
  • 通讯作者: 王明富
  • 基金资助:
    四川省烟草烟草公司广元市公司攻关项目“广元优质烤烟高效施肥技术与钾素吸收土壤限制因子研究”(201101010)。

Research on Soil Nutrient Distribution in Guangyuan Tobacco-growing Area

Yu Yaoying1, Wang Mingfu1, Gu Huizhan2, Guo Yingju1, Yu Xiao2, Yang Xue1   

  1. (1Plant Protection Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066;2Guangyuan Tobacco Company, Guangyuan Sichuan 615000)
  • Received:2014-11-13 Revised:2015-04-13 Accepted:2014-12-04 Online:2015-05-06 Published:2015-05-06

摘要： 旨在明确广元植烟区土壤pH和土壤养分的空间分布特征，土壤养分与pH的相关性，为广元地区烤烟种植合理施肥提供科学依据。2013—2014年，通过网格法布点采集、检测、分析广元地区846个土壤样本。结果表明：广元烟区土壤pH平均为7.68±0.7，变异系数9.06%，pH 7.5~8.5的土壤样本占总样本数的69.53%。有效磷、交换性钙离子、有效铁、有效锌和有效硼的变异系数在50%~100%之间，接近强变异性；有效铜和有效硫的变异系数大于100%，其中有效硫变异系数最大，其值107.12%，有效锰最小，变异系数22.51%；土壤有效硫、交换钙离子和交换性镁离子与土壤pH呈著正相关，相关系数分别是0.31*、0.51*和0.14*。由此可知，广元植烟土壤养分含量地域间分布不均衡，土壤pH总体偏碱，土壤中有机质和有效硼总体缺乏，碱解氮和速效钾含量总体偏低，有效磷和有效锌适中；有效锰、有效铁、有效铜、有效硫和交换性镁离子总体丰富，交换性离子钙总体极丰富。

关键词: 时间序列模型, 时间序列模型, 洞头, 大型藻类, 碳汇, 预测

Abstract: The research aims to make clear the characteristics of spatial distribution of tobacco soil pH value and soil nutrient in Guangyuan, the correlation between soil nutrients and pH value, thus to provide scientific basis for reasonable fertilization in tobacco planting of Guangyuan. The content of 846 soil samples in Guangyuan tobacco area were collected, detected and analyzed from 2013 to 2014. The results showed that an average of soil pH was 7.68±0.7 in Guangyuan tobacco area, the variation coefficient was 9.06%, samples with pH between 7.5 and 8.5 accounted for 69.53% of the total. The coefficient variation of available P, Fe, Zn, B and exchangeable calcium were 50%-100%, close to strong variability; the coefficient variation of available Cu and S were greater than 100%, and the coefficient variation of available S was the maximum, its value was 107.12%; the coefficient variation of available Mn was the minimum, its value was 22.51%. The soil pH and available S, exchangeable calcium and exchangeable magnesium were positively correlated, the correlation coefficient was 0.31*, 0.51* and 0.14*, respectively. Therefore, the Guangyuan tobacco soil nutrient content was unbalanced, the soil pH was overall alkali, soil organic matter and available B were lack, alkali hydrolyzable N and available K content were low, available P and Zn were moderate; Mn, Fe, Cu, S and exchangeable magnesium ion were abundant, exchangeable calcium ion were overall very rich.