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2018, N 2 (32) |
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PLANT GROWING
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Borodiy S., Borodiy P. |
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Simulation-mathematical model of morphometric parameters generative shoot of tansy (Tanacetum vulgare L.) for forecasting the yield of cultural plantations planted with seedlings |
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The subject of the study is the cultural plantation of tansy. The aim of the research is to develop a mathematical model for forecasting the yield of a cultivated common tansy plantation planted with planting seedlings. The research was conducted in 2013 ... 2015 on the experimental field of Kostroma State Agricultural Academy. Soil sod-podzolic medium loamy, humus content 1.85%, P2O5 - 135.33, K2O - 107.17 mg / kg soil, pH 5.41. Seedlings are obtained from the seeds of the 2012 harvest, which have overwintered directly in the inflorescences of the wildest coenopopulation. The weight of 1000 seeds is 0.13 g., The purity is 24.00%, the germination rate is 59.50%. To obtain seedlings, the seeds were sown in a wide-row method with a row spacing of 70 cm into grooves depth of 4.00 ... 5.00 cm without seeding the soil. The seeding rate is 59,000 germinated seeds per 1 ha. The age of seedlings for planting on a permanent place was 43 days, the phenological stage of development - six real leaves. Plants on the plantation were planted with a row spacing of 70 cm and a distance between plants in a row of 30 cm. The depth of planting was 1 ... 2 cm, followed by watering tap water at a rate of 0.50 liters for each plant. Care of the plantation included inter-row treatments to a depth of 2 ... 3 cm. As a result of the studies, the heat capacity of the phenological stages was calculated for the subsequent seasonal prediction of the development of the generative shoot of tansy. The dynamics of the height of the generative shoot for plants of the second year of life was predicted with an accuracy of 98.72%, for the third - 91.90%. Mathematical models predicting the growth dynamics of phytoorgans worked with accuracy: aboveground total phytomass - 98.04 ... 98.86%; aboveground active phytomass - 89,49 ... 96,00%; weight of leaves - 62.47 ... 83.18%; weight of the stem - 76.64 ... 91.91%; the mass of the inflorescences is 75.58 ... 94.98%, the dead phytomass is 80.66 ... 97.81%. The yield of inflorescences and by-products is calculated as the product of the forecast of the weight of phyto-organs by the number of generative shoots per unit area. The accuracy of the models makes it possible to calculate the forecast of the plantation yield for 2 ... 3 months before the collection of medicinal raw materials.
Keywords: TANSY, TANACETUM VULGARE L., THE DYNAMICS OF THE PRODUCTIVITY OF GENERATIVE SHOOT, YIELD FORECASTING, MATHEMATICAL MODEL |