Tomato is a thermophilic vegetables, under normal conditions, the optimum temperature for assimilation is 20-25 ℃, root growth temperature is 20-22 ℃. Hi light, light saturation point 70000lx, suitable light intensity of 30000-50000lx. Is also a short-day plants, tomato hi water, generally 60-80% of soil moisture, air humidity 45-50% is appropriate. Less stringent requirements on soil conditions, in the deep soil, well-drained, organic matter-rich fertile loam grow well. Soil pH to pH6-7 is appropriate.
Variety classification
① cultivated tomatoes, most cultivars are this variant;
② cherry tomato, spherical fruit, diameter of about 2 cm, 2 rooms, red, orange or yellow;
③ large leafy tomato, leaf margin smooth, shaped like potato leaves;
④ pear-shaped tomato, fruit pear-shaped, red or orange-yellow;
⑤ upright tomato, stem erect, fruit oblate spherical.
Soil preparation
According to a certain proportion of nutrition soil, nutrition porosity of about 60%, ph6-7. Available phosphorus 100 mg / kg or more, available potassium 100 mg / kg or more, available nitrogen 150 mg / kg, loose, fat, Water, nutrition is complete. The prepared good nutrition soil spread evenly in the sowing bed (thickness 10 cm), or nursery tray.
Tomato Seed treatment
Wen Tang seed soaking, leaf mold prevention, ulcer disease, early blight and other diseases.
Dipropionation of trisodium phosphate, this method has a more pronounced effect on tomato virus disease.
Tomato Seeding methods
Seeding: General tomato seeds contain about 300 grains per gram, according to the planting density, the general field of 667 square meters with 20-30 grams of seeds. Sowing beds per square meter can sow 10-15 grams. If the seed germination rate is less than 85%, the seeding rate should also be appropriate to increase some.
Sowing time: According to the planting season, climatic conditions, cultivation methods, nursery facilities and other factors considered in order to determine the appropriate sowing period.