FOLIAR FERTILIZER RICH IN SELENIUM (SE) AND CALCIUM (CA) FOR RICE PLANT AND PREPARATION METHOD AND USE THEREOF

摘要

#$%^&*AU2020102215A420201022.pdf#####ABSTRACT The present invention relates to a foliar fertilizer rich in selenium (Se) and calcium (Ca) for rice plant, a preparation method and use thereof, where every 1 L of the foliar fertilizer includes 510 g of chitosan, 5-10 g of sodium selenite, 10-20 g of calcium gluconate, 0.5-2 g of melatonin, 510 g of polyaspartic acid, 15-30 g of potassium silicate and 5-10 g of citric acid. The foliar fertilizer provided by the present invention is foliar sprayed at a heading stage or a grain filling stage of the rice plant and can significantly increase rice yield, taste value of rice and contents of Se and Ca. The foliar fertilizer of the present invention can be prepared by a simple method and conveniently applied in a time and labor reducing manner, and has a low cost and significant positive effects. The present invention has multiple effects of increasing rice yield and quality and improving nutrient enrichment of Se and Ca.