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The germination period starts from seed germination to cotyledon development until the first true leaf is revealed.
The seedling stage is revealed from the true leaves to the first inflorescence. This period is a parallel period of vegetative growth and reproductive growth. Under the conditions of sufficient sunshine, good ventilation and complete nutrition, the seedlings of appropriate age can be cultivated.
The flowering result period is from the first inflorescence to the fruit harvesting. It is divided into the initial flowering result period and the flowering result peak period. The initial flowering result period: from the first inflorescence to the fruit setting, it is the transitional stage mainly from vegetative growth to reproductive growth; the flowering result is high: from the first inflorescence to the fruit harvesting, the main result of yield formation period.
In the early stage of fertility, the nutrient content is small. From the first inflorescence, the nutrient uptake increases rapidly, and the nutrient uptake during the fruiting period can account for 70-80% of the total absorption. The absorption of nitrogen, phosphorus and potassium in tomato showed a linear upward trend. The absorption of potassium was nearly double that of nitrogen. The absorption of calcium was similar to that of nitrogen. Because of the calcium content in the “Tianji†brand of phosphorus nitrate (potassium) fertilizer, Prevent the occurrence of rot.
The fertilization techniques for tomatoes are:
1, base fertilizer. Tomatoes should be re-applied to the base soil, that is, on the basis of the application of organic fertilizer, the application of “Tianji†brand NPK fertilizer is 35-40 kg per mu.
2, topdressing.
(1) When the first ear is swollen, 20 kg of “Potin†phosphate phosphate fertilizer is applied in combination with watering.
(2) After harvesting the first ear, 20 kg of “Ni Tian†nitrophosphate fertilizer was applied as a fruit fertilizer.
(3) In the fruiting period, use 20% "Tenji" nitrophosphate fertilizer, 1% potassium dihydrogen phosphate, 0.1% zinc sulfate, 0.25% boric acid mixture, spray once every 7-10 days, Significantly increased yield and vitamin C content.
Tomatoes are grown in large areas and have a wide growing area. The life of a tomato is divided into germination stage, seedling stage and flowering result period.
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