The application of silicon fertilizer should follow the following technical principles:
First, the scope of application. Soil silicon supply capacity is an important basis for determining whether or not to apply silicon fertilizer. The greater the degree of silicon deficiency in the soil, the better the effect of fertilization and yield increase. Therefore, the silicon fertilizer should be preferentially distributed to the silicon-deficient areas and the silicon-deficient soil. The demand for silicon varies from crop to crop, and the effect of applying silicon fertilizer on silicon crops is obvious. After trials, the crops with significant silicon application are mainly grass, wheat, corn and other grass crops, among which rice is a typical silicon crop; soybean, peanut and other silicon-calcium crops; cucumber, melon, watermelon, melon and other cucurbitaceae And crops such as tomatoes, strawberries, and cotton. Since silicon fertilizer has the effect of improving soil, silicon fertilizer should be applied to contaminated farmland and protected land planted for many years.
Second, the application method. Silicon fertilizer is not easy to agglomerate, is not easy to deteriorate, has good stability, and does not have infiltration, volatilization and other losses, and has the characteristics of long fertilizer effect. Therefore, silicon fertilizer does not have to be applied annually, and can be applied every other year. The application method can be applied together with organic fertilizer, nitrogen, phosphorus and potassium fertilizer as base fertilizer; the water-soluble silicon fertilizer with high nutrient content can be used as base fertilizer or top dressing, but the topdressing period should be as early as possible. For example, it should be applied before rice booting in rice production.
Third, the amount. The application amount of silicon fertilizer should be determined according to the content of available silicon in different plots of soil and the content of soluble silicon in silicon fertilizer. Soils that are severely deficient in silicon can be applied in moderation, while soils that are mildly deficient in silicon should be applied less. Water-soluble silicon fertilizer with effective silicon content of 50-60% can be applied 6-10 kg per mu; steel slag silicon fertilizer with effective silicon content of 30-40% can be applied 30-50 kg per mu; effective silicon content is lower than 30% can be used for 50-100 kg per acre.
Note on the application of silicon fertilizer: 1, must be combined with other fertilizers. Silicon fertilizer can not replace nitrogen, phosphorus, potassium fertilizer, nitrogen, phosphorus, potassium, silicon fertilizer scientifically combined application, in order to obtain good results. 2. Silicon fertilizer cannot be mixed or applied simultaneously with ammonium bicarbonate. Silicon fertilizer will volatilize ammonia in ammonium bicarbonate, reduce the utilization of nitrogen fertilizer, and cause unnecessary waste. 3, silicon fertilizer can improve the soil, the price is cheap, it is best to apply continuously every season.
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