Special rice selenium fertilizer and preparation method thereof, and method for producing selenium-rich rice

Abstract

The invention discloses a special rice selenium fertilizer and a preparation method thereof, and a method for producing selenium-rich rice. The selenium fertilizer comprises the following ingredients in parts by weight: 1-10 parts of a selenium source based on selenium, 500-1000 parts of dried fine earth, and 50-200 parts of a biomass filling material. The method for producing the selenium-rich rice comprises the following steps: when transplanting rice seedlings, synchronously applying the selenium fertilizer to the roots of rice seedlings. The rice cultured with the selenium fertilizer provided by the method has the selenium content up to 0.15 mg/kg, and the utilization rate of the selenium fertilizer is higher than that of fertilizer applied in the rice growth process after transplanting.