METHOD OF EVALUATION OF EFFICIENCY OF RECLAMATION BY PEAT OF DISTURBED TUNDRA SOILS WITH DIFFERENT FULL MOISTURE CAPACITY

摘要

FIELD: agriculture.;SUBSTANCE: method comprises application of peat into the soil taking into account their full moisture capacity, and evaluation of efficiency of their reclamation. At the first stage the full moisture capacity of the disturbed soil is determined, for example, using the gravimetric method after achievement of full water saturation of all its pores. At the second stage the local peat is sampled from at least three peat bogs - samples №1, №2 and №3 to determine the sample with the maximum activity of the enzyme dehydrogenase as a key indicator of reclamation of soil fertility. At the third stage a rational peat dose is selected (samples №1, №2 or №3) as a ratio of peat: soil from the data obtained depending on the total moisture capacity of the soil. At the fourth stage, after the soil incubation for 10 days under controlled hydrothermal conditions (humidity of 70% of the total moisture capacity and the temperature 30°C), the samples of disturbed soil are taken without peat application - the sample №4, as well the samples of disturbed soil with the application of peat (samples №1, №2 and №3) - the sample №5. Then the dehydrogenase activity of the samples is determined, while the effectiveness of reclamation of disturbed soil by peat is determined by the increased dehydrogenase activity of the sample №5 with respect to dehydrogenase activity of the sample №4.;EFFECT: method enables to reduce time, to improve accuracy and quality of evaluation of the reclamation efficiency of disturbed soils with different full moisture capacity, and to use efficiently peat under conditions of the Far North.;4 dwg, 1 tbl