Selyaninov Hydrothermal Coefficient
The Hydrothermal Coefficient (HTC) is a meteorological indicator used in agriculture to assess soil moisture levels by comparing precipitation totals against active temperature sums.
Также говорят: Hydrothermal coefficient, HTC, Selyaninov's index
Agronomists use the HTC to evaluate the moisture availability for crops during the growing season. It serves as a key decision-making tool for irrigation scheduling and assessing drought stress levels across different production zones.
Values below 1.0 generally indicate arid or drought conditions, while values exceeding 1.5 suggest excess moisture, which may impact field accessibility and crop health. Monitoring this coefficient helps in determining the timing for moisture conservation tillage or drainage operations.
A common mistake is relying on long-term regional averages rather than field-specific data. Accurate assessment requires using local weather station inputs to account for microclimatic variations that significantly affect actual water balance.