Abstract
The main mechanism for the formation of yield is the process of transpiration, the driving force of which is the radiation balance and photosynthetically active radiation (PAR). The larger the area of the plant surface that receives the luminous flux of solar energy, the more active the action of the photosynthetic process. The formation of organic matter depends on the formed aboveground phytomass of plants. The aim of the study is to find the optimal ratio between the emitted flux of solar energy and the area of the assimilation apparatus for further determining the phytoproductivity of plants. The object is located in the steppe zone of the central part of the Volgograd region (southern part of the Volga Upland, 48°38′52″ N, 44°26′14″ E). Modern methods of mathematical processing of experimental data were applied. The duration of the growing season of plants and the amount of light exposure affect the optical density coefficient (Kod). As a result, the coefficient (KPAR ) should be close to 1 unit for use 2.5% sunlight radiation (PAR).
Highlights
The phytoproductivity of vegetation depends on many factors, including the properties of the nutrient medium, weather conditions, moisture reserves in the soil, taking into account its consumption during the growing season [1,2,3,4]
The activity of the photosynthesis process depends on the intensity of the light flux [10]
The solar activity affects the formation of plant biomass
Summary
The phytoproductivity of vegetation depends on many factors, including the properties of the nutrient medium, weather conditions, moisture reserves in the soil, taking into account its consumption during the growing season [1,2,3,4]. Solar radiation is one of the factors that affects it during the growing season [5]. The vectors of change in the light load and the area of the sheet apparatus are polar. This fact assumes the presence of an optimum in the ratio of sunlight and leaf surface for maximum plant productivity and the simultaneous influence of these vectors. The activity of the photosynthesis process depends on the intensity of the light flux [10]
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