METHOD FOR DETERMINING THE STATE OF SOILS IN agroresource reclamation SCALE RICE IRRIGATION SYSTEM

摘要

FIELD: agriculture.;SUBSTANCE: method includes transformation of the obtained image, and calculation of the areas of marked contours. And in non-vegetation period with the navigation system the coordinates and numbers of points of soil sampling and level measurements and groundwater salinity are applied to the map of the rice field. Then a quantitative assessment of ameliorative state of the soil is carried out of rice irrigation system according to the level and salinity of groundwater, humus content, acid-base properties of the soil, provision of hydrolysable nitrogen, mobile potassium and mobile phosphorus, the percentage of soil aggregates in the ploughed horizon, the degree and type of soil salinity by assigning each ameliorative criteria from 1 to 5 points, depending on the extent of its impact on the ameliorative state of the soil. After that, according to the score of ameliorative criteria the ameliorative state of the soil is evaluated, and with a score of 8-20 the ameliorative state of the soil is considered good, 20-30 - satisfactory, 30-40 - unsatisfactory. Then, for each ameliorative state of the soil the flow process chart with optimally-adaptive complex of manufacturing operations is developed.;EFFECT: method enables to increase the agro-resource potential of the rice irrigation system and rice yield.;2 tbl, 1 ex