FIELD: agriculture.SUBSTANCE: method involves selecting the plants of each hybrid, determining the space of leaves, the biometric indices by determining the number and weight of individual plant organs in terms of growth and development phases, determining the dry biomass of the plants, taking into account the vegetative mass gain of the entire plant and seeds during the development period, the density of plant standing, the photosynthetic potential and the calculation of the net productivity indices of photosynthesis. The amount of the dry plant biomass is preliminarily determined at the beginning and at the end of each phase of development. Thereinafter, the net productivity parameters of photosynthesis are determined by the expression NPP=(B2 - B1):PP, where B2 and B1 are the dry biomass of plants at the beginning and at the end of the accounting period B2 - B1 is the dry weight gain for the number of days of the accounting period, g PP - the photosynthetic potential of hybrids within the accounting period, g/m2×day. According to the obtained values of the net productivity of photosynthesis and the density of plant standing, the yield of corn hybrids is predicted. If the net productivity of photosynthesis of the hybrid is more than 7.5 g/m2×day at the density of plant standing more than 40 thousand plants per hectare, it is considered highly productive.EFFECT: method allows to reliably predict the yield of corn hybrids at different phases of plant development.2 tblИзобретение относится к области растениеводства, а именно к способу прогнозирования урожайности гибридов кукурузы. Способ включает отбор растений каждого гибрида, определение площади листьев, биометрических показателей путем определения количества и массы отдельных органов растений по фазам роста и развития, определение сухой биомассы растений, учет накопления вегетативной массы всего растения и семян за период развития, густоты стояния растений, фотосинтетического потенциала и расчет показателей чистой
