• 中文核心期刊
  • CSCD来源期刊
  • 中国科技核心期刊
  • CA、CABI、ZR收录期刊

湖南省不同区域葡萄种植土壤耕层养分差异分析

Nutrients in Soil Layers at Vineyards in Regions of Hu'nan

  • 摘要: 研究分析湖南省不同地区的葡萄种植土壤不同土层的养分特征,以期为湖南省葡萄种植的土壤养分管理以及合理施肥提供参考。本研究选择湘北、湘中、湘南、湘西4个有代表性的葡萄种植区取样,测定分析了各地区0~20、20~40、40~60 cm 3个土层的养分差异。结果表明:(1)4个地区的土壤pH值在5.0~6.1,均随着土层深入而逐渐增加;(2)不同地区土壤有机质含量差异显著,0~20 cm土层湘西地区的土壤有机质含量最高(27.4 g·kg-1),湘北地区最低(16.7 g·kg-1),4个地区的土壤有机质含量均随土层深入而降低;(3)随着土层的深入,4个地区土壤全氮和碱解氮含量均呈降低趋势,0~20 cm土层,湘西地区的土壤全氮和碱解氮含量均最高,分别为1.68 g·kg-1和149.2 mg·kg-1;(4)随着土层的深入,4个地区的土壤全磷和有效磷含量均呈下降趋势,0~20 cm土层,4个地区的土壤全磷差异不显著,土壤有效磷含量湘南地区最高(32.0 mg·kg-1),湘中地区最低(8.8 mg·kg-1);(5)0~20 cm土层,湘西地区的土壤全钾含量最高(19.2 g·kg-1),湘北地区土壤速效钾含量最高(639.9 mg·kg-1),4个地区土壤全钾和速效钾含量均随土层加深而降低。通过施用碱性肥料中和偏酸性土壤,对于养分含量低的地区合理的增加肥料的投入,再加上规范化的管理措施,有助于葡萄提高产量,提升品质。

     

    Abstract: Contents of nutrients in soil layers at vineyards in 4 regions of Hunan province were determined for efficient management and fertilization. The sampling of the 0-20 cm, 20-40 cm and 40-60 cm soil layers took place at 4 typical areas in Xiangbei, Xiangzhong, Xiangnan and Xiangxi. The results showed that (1) the soil pHs ranged from 5.0 to 6.1 with a gradual increase along with the depth of the soil at a same location; (2) significant variations in content of organic matters existed among the regions that decreased with the depth, and the greatest was found in 0-20 cm layer sample from Xiangxi (i.e., 27.4 g·kg-1), while the lowest, from Xiangbei (i.e., 16.7 g·kg-1); (3) the deeper the soil beneath the ground level, the lower the contents of total and alkaline nitrogen, as Xiangxi had the highest total nitrogen at 1.68 g·kg-1 and available nitrogen at 149.2 mg·kg-1 in the 0-20 cm layer; (4) the contents of total and available phosphorus declined with the depth, but no significant difference on total phosphorus among the regions in 0-20 cm layer, however, the available phosphorus was the highest in Xiangnan (i.e., 32 mg·kg-1) and the lowest in Xiangzhong (i.e., 8.8 mg·kg-1); (5) the potassium was found less in the deeper layers in 0-20 cm layer, the highest total potassium content was 19.2 g·kg-1 in Xiangxi, and the available potassium at 639.9 mg·kg-1 in Xiangbei. It appeared that the acidity of the soil could be neutralized by using alkaline fertilizers, and a balanced fertility be achieved by appropriate applications coupled with proper management for the vineyards in the regions.

     

/

返回文章
返回