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The absorption of silicon after the spike differentiation of rice increased rapidly, and it increased more after heading. Therefore, the management of rice in the middle and later stages must be supplemented with silicon.
Since the absorption of silicon by plants is carried out in the form of silicic acid molecules, silicon in the soil is rarely used. The best solution at present is to use bio-silicon fertilizer, which is to convert the mineral silicon in the soil into a microbial fertilizer that plants can absorb and use.
The "Silicon" silicate complex microbial inoculant can be applied as a base fertilizer alone, or after being mixed with organic fertilizer or chemical fertilizer, and can also be topdressed. Before the rice is tilled, "Silicon" and other agents can be used. Spread the fertilizer after mixing, the dosage is 2~5 kg/mu.
Middle and Late Stages of Rice Heavy Silicon Supplementation
Silicon is an essential element for healthy growth of rice and other crops. The content of silicon in rice stalks is more than ten times that of N, which exceeds the sum of nitrogen (N), phosphorus (P), and potassium (K). It can promote early heading, increase cobs, and increase spike length. The characteristics of silicon accumulation and distribution also significantly reduce the permeability of epidermal cells, thereby reducing the transpiration by more than 30%, and relatively increasing the drought resistance. The formation of the angular silicon layer of the epidermal cells enhances the toughness of the epidermis, thereby increasing the resistance to invasion by the pests. Silicon can increase the strength of rice stems and increase the ability of plants to resist lodging.