COMPLEX FERTILIZERS WITH MICROELEMENTS FOR SUNFLOWER

摘要

The invention relates to production of mineral fertilizers, in particular, to production of complex fertilizers by chemical enterprises, which are intended for use in agriculture for sunflower cultivation. Various compositions of complex fertilizers are provided with microelement additives for primary application to soil before sowing and for foliage spraying of vegetating sunflower plants. Their agrochemical efficiency is given in field experiments at sod podzol light loamy and cohesive sabulous soils. Data is provided on influence of stated complex fertilizers with modifying additives for crop yields and quality of green mass and sunflower seeds, oil content in seeds. It was found that use of complex fertilizers with modifying additives both during primary application in soil and foliage spraying on vegetating plants makes it possible to increase crop yields of green mass and sunflower seeds, with simultaneous increase of weight of 1000 seeds and mass of seeds in a single calathid, to reduce quantity of blind seeds and huskness, and also to increase content of oil in seeds compared to prototype and basic options.