Time and method of fertilization for Tomato

Apply sufficient basic fertilizer when preparing the soil, and then apply high-quality fertilizer in ditch or hole when making the border. Before setting fruit, apply a little clear dung water. After setting fruit in inflorescence, 30% of the people applied manure and urine, applied 1-2 times. When the fruit expands rapidly, 40% concentration of human feces and urine are applied every 10 days. During fruit growth, foliar spraying of 2Mel should be carried out three times, mainly with potassium dihydrogen phosphate, urea and boron fertilizer.

1. Base fertilizer: sufficient base fertilizer, early seedling emergence, fast growth in early stage, good vegetative growth and reproductive growth. Usually 5000 kg of barnyard manure is applied per mu, and then ditch or hole application of high-quality fertilizer, such as cake fertilizer, dried manure, and compound fertilizer 20-25 kg. Do not use too much nitrogen when applying base fertilizer. It is necessary to balance nitrogen, phosphorus and potassium.

2. Topdressing: before planting to set fruit, clear manure water should be applied slightly when the plant is short of fertilizer, and topdressing should generally be controlled. After the inflorescence sets fruit, the plant should be branched, the young fruit should be enlarged, and it should continue to blossom and bear fruit, resulting in large nutrient consumption, which is generally applied with 30% of human feces and urine for 1-2 times. When the second and third ears expand rapidly, nutrients must be supplied continuously in order to meet the growth needs. at this time, the method of diligent pursuit should be taken, and 40% concentration of human feces and urine should be applied every 10 days in sunny days.

3. Foliar fertilizer: during fruit growth, especially when topdressing on the ground cannot be carried out in the early days of continuous rain, foliar spraying should be carried out three times with a concentration of 0.2% 0.5% potassium dihydrogen phosphate and 0.2-0.3% urea. During flowering, 30 mg / kg boric acid solution should be sprayed once to increase the content of vitamins and soluble solids in tomato and improve the quality of tomato.