陕西省葡萄主产区土壤养分状况分析初报

Preliminary report on analysis of soil nutrient status in the main grape production areas of Shaanxi Province

为探明陕西省葡萄主产区果园土壤养分状况,以主产区渭南、西安、咸阳和宝鸡的葡萄园土壤为研究对象,分别测定0~20、20~40、40~60 cm土层土壤理化性质和营养成分。结果表明:陕西省葡萄主产区内,总体上土壤pH值为强碱性,土壤容重大,土壤过于紧实,有机质含量偏低;氮含量偏低,而磷、钾含量较高,且含量在土壤垂直水平上分布不均匀,除速效氮含量随着土层深度的增加而增加外,全氮、全磷、全钾、速效磷、速效钾含量均随着土层深度的增加而降低;Cu含量丰富,Fe、Mn含量缺乏,Zn含量除在0~20 cm土层丰富外,在更深的两个土层含量急剧下降,处于一种缺乏的状态,Fe、Mn、Zn、Cu含量均随着土层深度的增加而降低。

In order to investigate the nutrient status of orchard soil in the main grape production areas of Shaanxi Province,the soil physical and chemical properties and nutritional components of grape orchards in the main production areas of Weinan,Xi’an,Xianyang and Baoji were measured,respectively,in the 0~20 cm,20~40 cm,and 40~60 cm soil layers.The results showed that in the main grape production areas of Shaanxi Province,the overall soil pH was strong alkaline,the soil had a large capacity,the soil was too tight,and the organic matter content was low.The nitrogen content was low,while the phosphorus and potassium content was high,and the content was unevenly distributed vertically and horizontally in the soil.Except for the increase of available nitrogen content with soil depth,total nitrogen,total phosphorus,total potassium,available phosphorus,and available potassium all decreased with soil depth.The content of Cu was abundant,while the content of Fe and Mn was lacking.Except for the rich content in the 0~20 cm soil layer,the content of Zn sharply decreased in the deeper two soil layers,in a state of deficiency.The content of Fe,Mn,Zn and Cu decreased with the increase of soil depth.