Studies have shown that potassium is one of the indispensable nutrients for tomato growth. Under the premise of sufficient nitrogen and phosphorus, rational application of potassium fertilizer can not only improve tomato yield and comprehensive resistance, but also improve tomato quality and avoid ribs. Rot occurs.
There are currently three major types of potash on the market: potassium chloride, potassium sulfate, and potassium dihydrogen phosphate. When the potassium chloride is applied, the tomato fruit expands slowly and has an adverse effect on the quality. Therefore, potassium chloride is generally not used on tomatoes.
Potassium sulphate is a physiological acid fertilizer, which can be used as base fertilizer and top dressing. When used as a base fertilizer, deep soil application should be adopted. Because of the small change of dry soil moisture in the deep soil, it can reduce the fixation of potassium and improve the utilization of potassium. For top dressing, it can be applied once on sticky soil. It should be applied in stages on soil with poor water retention and fertilizer retention capacity to avoid loss of potassium. Long-term use of potassium sulfate is likely to cause soil compaction, and for this reason, decomposed organic fertilizer should be added.
Potassium dihydrogen phosphate is mainly used for foliar topdressing. The concentration is generally 0.2% to 1%. When formulating fertilizer solution, the fertilizer must be fully dissolved and mixed before use. It is best used in the morning or evening. After the rain, it should be replenished in time.
There are currently three major types of potash on the market: potassium chloride, potassium sulfate, and potassium dihydrogen phosphate. When the potassium chloride is applied, the tomato fruit expands slowly and has an adverse effect on the quality. Therefore, potassium chloride is generally not used on tomatoes.
Potassium sulphate is a physiological acid fertilizer, which can be used as base fertilizer and top dressing. When used as a base fertilizer, deep soil application should be adopted. Because of the small change of dry soil moisture in the deep soil, it can reduce the fixation of potassium and improve the utilization of potassium. For top dressing, it can be applied once on sticky soil. It should be applied in stages on soil with poor water retention and fertilizer retention capacity to avoid loss of potassium. Long-term use of potassium sulfate is likely to cause soil compaction, and for this reason, decomposed organic fertilizer should be added.
Potassium dihydrogen phosphate is mainly used for foliar topdressing. The concentration is generally 0.2% to 1%. When formulating fertilizer solution, the fertilizer must be fully dissolved and mixed before use. It is best used in the morning or evening. After the rain, it should be replenished in time.
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