METHOD OF ACCELERATED DETERMINING SMALLEST SOIL MOISTURE CAPACITY IN FIELD

摘要

FIELD: agriculture.;SUBSTANCE: invention relates to the field of agriculture and soil science. The method comprises cutting a groove along the site for determining the soil moisture capacity with the length of 0.5-0.7 m, width of 0.25-0.30 m to the depth of the estimated soil layer. Then, the groove is filled with water, water is supplied to the site from the grooves with infiltration for 7-14 cm, the water is discharged from the groove 30 minutes after pouring water. The groove is closed with boards or metal sheet, and the surrounding area within a radius of 1.0 m from the centre of the groove - with polyethylene film, 20 cm layer of straw and 20 cm layer of soil. The soil moisture capacity in the walls of the groove is determined on layers on the investigated depth in three, five, seven days in four-fold replications to establish a constant humidity, which will be considered its lowest moisture capacity (HB). Water to moisten the soil is fed from the groove, cut on the side of the experimental site, infiltration simultaneously in all layers.;EFFECT: method enables to reduce the period of determining HB by 16-18 days, the cost of water for its determination in 2,4 times, the need in electronic water meters in 6-11 times.;2 cl, 1 tbl