Three fertilizers help greenhouse tomato

Base fertilizer

Before transplanting seedlings, 2000 kg of fertilizers, 10 kg of urea and 40-50 kg of calcium sulphate are applied per acre, or a mixture of sulfur-based compound fertilizer (10-10-5) 25-40 kg plus urea 10 kg is applied.

Strong fertilizer

Tomato seedlings grow to 5 to 6 leaves, if the leaf color becomes light can be foliar spray fertilizer. The commonly used fertilizers include 300 times urea solution, 300 times potassium dihydrogen phosphate solution, and 0.1% to 0.3% potassium sulfate compound fertilizer solution. Spray every 10 days or so during the strong season. In addition, foliar spray fertilizer can be combined with pest control.

Result fertilizer

When the first fruit diameter is 1.5 to 2.5 centimeters long, it is generally applied to ammonium nitrate 15 to 20 kilograms, general calcium 20 to 30 kilograms, or urea 5 kilograms, and sulfur-based compound fertilizer 10 to 20 kilograms per acre. When the second and third fruits grow to a diameter of 3 cm, 10 kg of urea and 15 to 20 kg of sulfur-based compound fertilizer are used per acre. In the full fruit period, combined spraying can be used for extra-root fertilizer application. Potassium dihydrogen phosphate, sputum liquid fertilizer, and general calcium can be used to improve the coloration and quality of the fruit.

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