ANINNOVATIVE WAY OF PLANTING FRUIT TREES WHEN USING DRIP IRRIGATION ON LIGHT SOIL

Abstract

With the drip irrigation of sandy soils, a wedge-shaped moistening contour is formed. It is characterized by an insignificant distribution of moisture in the horizontal direction and a predominant penetration of it into the depth, beyond the root layer of soil. Such a contour formation is insuffi cient to moisten the volume of the soil in which the main mass of the absorbing tree roots is located. Therefore, in silt-sandy, sandy and stone-sandy soils one pipeline is laid along a row of trees with the installation of 2-5 drippers per tree at a distance of not less than 50 cm from its stem. However, even in this case, the uniformity of moistening is diffi cult to provide. To solve this problem “The method of drip irrigation of an intensive garden” was created by VNIIGiM. The essence of this method is that when it is implemented, an artifi cial increase in the moisture capacity of the coarse-grained soil is 266 achieved by the addition of urea-formaldehyde fertilizer and at the same time a deep water runoff is prevented by means of a screen with adjustable water permeability. As a result of the application of the proposed method of drip irrigation of an intensive garden, conditions are created for ensuring uniform moistening of the root layer in soils with high water permeability and maintaining a favorable water and air regime in it, while at the same time eliminating deep moisture fi ltration.