In the midwinter season, it is the off-season season for tomatoes. At the time of the Spring Festival, the demand for tomatoes is high and the prices are good. It is a good way for growers to increase their income by planting overwintering tomatoes. Based on years of observation and practice, the following aspects should be noted in the setting and field management of overwintering tomato:
First, set a new shed for soil preparation 60 days before planting, flatten the shed. Drain the flooded land and when the soil in the shed is diverted, deep-dip once after the second re-leveling and the depth is 40 cm. The old shed was deep-turned after harvesting the previous crop. In combination with Mushi quality decomposing chicken manure 10 to 14 squares, diammonium 50 kilograms, potassium sulfate 50 kilograms, base fertilizer is applied 60% at the first deep turn, 30% for the second time, and the third time at the time of planting The second site preparation is completed about 25 days before planting. In order to achieve soil bactericidal purposes, 50% carbendazim, 2.5 kg of Dixone, 2.5 mg of carrageenan or carbofuran may be applied in the second site preparation, and the last site preparation is required to reach the ground in the shed. Level, soil fine, loose, no weeds, no ground film debris.
Second, planting tomatoes overwintering, 50 to 70 days after sowing can achieve strong seedlings colonization criteria, planting should be selected sunny. Before setting, press narrow row 50 centimeters, wide row 70 centimeters (or 60 centimeters for both width and width rows), 10 centimeters deep for north and south, and diammonium 10 kg or 25 kg high-efficiency phosphate fertilizer for 30 meters. Put the seedlings in the centimeters, then fill in the ditch in the wide row, then take the soil from the narrow rows, and finally form a ditch with a narrow depth of 15 cm, a width of 15-20 cm in the ditch, after the ditch is repaired, The water is filled in narrow rows, and the ridges are ridged after delivery, covering a 1.2-1.3-meter-wide mulch.
Third, field management First, temperature, light management, after planting, with high temperature to promote seedlings, maintain 30 °C during the day, more than 33 °C vent, less than 30 °C wind, seedlings too wilting attention to appropriate shade, after the slow seedlings, during the day Keep 22~25°C, about 10°C at night (focusing on root control), increase the temperature during fruit enlargement, 25~28°C during the day, 13~15°C during the night, and not less than 8°C before the curtain is uncovered in the morning. The color change period is 25~30°C during the day and 15°C at night. The second is water and fertilizer management. After planting water, the first panicle fruit is walnut, and it is generally not watered. When 80% of the first panicle reaches the walnut, it starts to water, and the water is applied with diammonium 10 kg. Apply humic acid or amino acid organic compound liquid fertilizer, and then pour a second water when the second ear fruit is swollen. Note that the amount of watering in winter should be small, and you should choose sunny (preferably to keep more than 3 sunny days after pouring), and To underfill the film, after March, with the increase of the outside temperature, the amount of watering and the number of times can be increased. Whether it is watering in winter or spring, spray the medicine before pouring the water every day, and pay attention to the ventilation after pouring the water. . The third is the prevention and control of pests and diseases. After planting, spraying once every 7 days or so to achieve early prevention, the following agents are used: chlorothalonil, mancozeb, DuPont, carbendazim, Veloxin, Anti-drug scorpion, gram dew, the above agents are used interchangeably, if there is a disease, medication should be used for the specific situation. The principle of medication is sunny water, cloudy aerosol, rain and snow dust.
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