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中国农学通报 ›› 2017, Vol. 33 ›› Issue (33): 115-119.doi: 10.11924/j.issn.1000-6850.casb16120137

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

延安南部县区烟地土壤理化性状分析

赵满兴,杨旭艳,袁威,徐世峰,龚鹏飞,丁朋辉,解红梅,杜常亮   

  1. 延安大学生命科学学院,延安大学生命科学学院,延安市烟草公司,延安市烟草公司,延安市烟草公司,延安市烟草公司,延安市烟草公司,延安大学生命科学学院
  • 收稿日期:2016-12-29 修回日期:2017-11-07 接受日期:2017-03-14 出版日期:2017-11-27 发布日期:2017-11-27
  • 通讯作者: 赵满兴
  • 基金资助:
    陕西省高水平大学建设专项资金资助项目--生态学(2012SXTS03)、延安烟区土壤改良措施示范研究与推广(YAYC-2016-FW-90)和延安大学引导项目(YD2016-08)

Physical and Chemical Properties in South Yan’an Tobacco Planting Soil

  • Received:2016-12-29 Revised:2017-11-07 Accepted:2017-03-14 Online:2017-11-27 Published:2017-11-27

摘要: 为了解延安南部县区烤烟主栽区土壤理化性状,在延安市宜川县、富县和南泥湾镇选择具有代表性的烟地进行土壤分析,土壤分0-30cm、30-60cm、60-90cm三个层次进行取样。分析其pH值、有机质、速效磷、铵态氮和硝态氮含量。结果表明:在土壤深度为0-30cm、30-60cm和60-90cm时,pH平均值分别为7.00、7.11和7.37。因此土壤越深越偏碱性。所有土样有机质含量平均为22g/kg左右,在土壤深度为0-30cm, 30-60cm和60-90cm时,有机质含量平均值分别为17.88 g/kg、21.93 g/kg 和28.89 g/kg。随着土层的加深,土壤有机质的含量也在有所增加。有效磷含量平均为76mg/kg左右,在土壤深度为0-30cm, 30-60cm和60-90cm时,有效磷含量平均值分别为82.92 g/kg、69.51 g/kg和76.50 g/kg,在不同的土层中有效磷的含量差异不大。铵态氮含量的平均值为130mg/kg,在土壤深度为0-30cm, 30-60cm和60-90cm时,铵态氮含量平均值分别为116.95 g/kg、143.35 g/kg和129.2.50 g/kg。在不同的土层中有铵态氮的含量差异不大。硝态氮含量的平均值为91mg/kg,在土壤深度为0-30cm, 30-60cm和60-90cm时,硝态氮含量平均值分别为102.96 g/kg、96.92 g/kg和73.46 g/kg。硝态氮的含量随着土层的加深,土壤硝态氮的含量有所减低。

关键词: 深层地温, 深层地温, 气候倾向率, 气候突变, M-K检验

Abstract: To evaluate the physical and chemical properties of tobacco planting soils in Yan’an city, three areas were chosen (Yichuan County, Fuxian County and Nanniwan Town) to analyze soil pH value, organic matter, available phosphorus, ammonium nitrogen and nitrate nitrogen in 0-30, 30-60 and 60-90 cm soil layers. The results showed that in the soil depth of 0-30, 30-60 and 60-90 cm, the average pH value was 7.00, 7.11 and 7.37, respectively, which showed that with the increase of soil depth, soil tended to be alkaline. The average content of soil organic matter was 22 g/kg, and the average value was 17.88, 21.93 and 28.89 g/kg in 0-30, 30- 60 and 60- 90 cm soil layers, respectively. With the increase of soil layer, organic matter also increased. Soil average available phosphorus content was 76 mg/kg and it was 82.92, 69.51 and 76.50 mg/kg in 0-30, 30-60 and 60-90 cm soil layers, respectively, the difference was not big. Mean value of soil ammonium nitrogen content was 130 mg/kg, the average value was 116.95, 143.35 and 129.25 mg/kg in 0-30, 30-60 and 60-90 cm soil layers, respectively, and there was no significant difference among different soil layers. Soil average nitrate nitrogen content was 91 mg/kg, it was 102.96, 96.92 and 73.46 mg/kg in 0-30, 30-60 and 60- To evaluate the physical and chemical properties of tobacco planting soils in Yan’an city, three areas were chosen (Yichuan County, Fuxian County and Nanniwan Town) to analyze soil pH value, organic matter, available phosphorus, ammonium nitrogen and nitrate nitrogen in 0-30, 30-60 and 60-90 cm soil layers. The results showed that in the soil depth of 0-30, 30-60 and 60-90 cm, the average pH value was 7.00, 7.11 and 7.37, respectively, which showed that with the increase of soil depth, soil tended to be alkaline. The average content of soil organic matter was 22 g/kg, and the average value was 17.88, 21.93 and 28.89 g/kg in 0- 30, 30- 60 and 60- 90 cm soil layers, respectively. With the increase of soil layer, organic matter also increased. Soil average available phosphorus content was 76 mg/kg and it was 82.92, 69.51 and 76.50 mg/kg in 0-30, 30-60 and 60-90 cm soil layers, respectively, the difference was not big. Mean value of soil ammonium nitrogen content was 130 mg/kg, the average value was 116.95, 143.35 and 129.25 mg/kg in 0-30, 30-60 and 60-90 cm soil layers, respectively, and there was no significant difference among different soil layers. Soil average nitrate nitrogen content was 91 mg/kg, it was 102.96, 96.92 and 73.46 mg/kg in 0-30, 30-60 and 60-90 cm soil layers, respectively, and the content of ammonium nitrogen decreased with the increase of soil layer.

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