During the growth of selenium-enriched rice, organic selenium foliar fertilizer is sprayed in a specific environment. In addition to the function of ordinary foliar fertilizer, this foliar fertilizer also contains healthy element selenium. Selenium-enriched rice is green, pollution-free, and organic, and is especially beneficial to human health. Therefore, the selenium-enriched rice planting industry is very popular. So, how to fertilize selenium-rich rice during planting?
Basal fertilizer and top dressing are fertilized with grain fertilizer containing a large amount of selenium and trace elements at the heading stage of rice. In addition, it is also necessary to cooperate with the application of conventional element fertilizers, implement the principle of "one control and two increase" and the principle of fertilization before attack, middle control and after supplementation, that is, control nitrogen fertilizer, increase application of phosphorus and potassium fertilizer and organic fertilizer, and appropriately remove nitrogen and potassium fertilizer. Apply ear fertilizer. In the process of top dressing, attention should be paid to the time and quantity of fertilizer to avoid unnecessary waste.
Foliar fertilizer spraying selenium fertilizer is the most common and effective method. Rice foliar fertilizer has the characteristics of fast speed and large absorption area, and it is generally sprayed during the heading stage and the filling stage. Spraying at the heading stage helps to absorb a lot of water and is the key to increasing the selenium content. In addition, the filling stage is when the rice is mature but not fully mature, and the pre-harvest stage is the last step of spraying selenium fertilizer. This period is a critical period to increase grain weight, but spraying must be stopped 20 days before harvest.
The application of selenium fertilizer The application of selenium fertilizer in the seedling, tillering and heading stages is the most critical. The scientific method is to apply foliar fertilizer containing selenium to water and put it into artificial sprayer or drone spraying equipment. The spraying time is generally from 9 am to 5 pm on a sunny day or in the afternoon on a cloudy day, but it cannot be sprayed in the rain, because the rain will wash away the selenium fertilizer, so that the rice cannot be absorbed and will not work.
Growers can adopt corresponding fertilization methods according to different periods of rice. Only in this way can the quality and yield of selenium-rich rice be improved.
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