| abstract |
The invention discloses a nano-silicon-zinc foliar fertilizer and a preparation and spraying method thereof, belonging to the field of rice cadmium pollution control and biological enhancement. The nano-silicon-zinc foliar fertilizer is composed of 15-25 parts by mass of compound amino acid liquid, 10-15 parts by mass of soluble zinc compound, 10-15 parts by mass of neutral nano-silicon, and 0.01-0.02 parts by mass of foliar fertilizer adjuvant The balance is composed of water, and the reasonable application period of the new composite nano-silicon-zinc foliar fertilizer is the early stage of tillering, the early stage of booting and the early stage of grain filling; when using, it is diluted with water at 1:50 and evenly sprayed on the front and back of the rice leaves. It is 1L/mu, and it can also be sprayed by drone (dilution ratio is 1:5). Compared with the existing foliar inhibitor and control agent, the new nano-silicon-zinc foliar fertilizer is low in cost, and has a significant effect of reducing cadmium and increasing zinc yield. |