Abstract
The paper presents the study results of mobile forms of Mn, Zn and Cu in irrigated fertilized and unfertilized chernozems typical. Irrigation affects the content and distribution of mobile forms of trace elements, increasing their removal beyond the 150 cm of soil layer. The fertilization increase the migration of Cu until 130 cm, fixed Mn and Zn in 0-60 cm of the irrigated soils. During irrigation constitutes a danger of soil contamination with Mn, Cu and Zn.
Highlights
By geographical location the Republic of Moldova is falling within the countries with insufficient humidity
The same legislation of content and distribution of trace elements observed in the chernozem typical fertilized without irrigated and irrigated
The distinguishing feature is that in the unfertilized irrigated chernozem the middle part 60-100 cm of the profile contains a minimum content of Mn and Zn, while the maximum is located at a depth of 100-110 cm
Summary
By geographical location the Republic of Moldova is falling within the countries with insufficient humidity. In the northern part of the country, the average annual rainfall is below moderate, in the southern - very low. Frequent droughts create a large deficit of humidity in the soils and air; its consequences are substantial decrease or loss the agricultural production. In these conditions the irrigation is one of the most effective measures to optimize the soil humidity regime and crop plants. Irrigated area at the 01.01.2012 consists 225.24 thousand ha (6.65% of total area of country). Volume of irrigational fund depends on a number of factors, the main being pedological, hydrogeological and lithogeomorphological
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