First, control the seedling age and timely planting. Strictly control the seedling age, such as the general early-maturing tomato seedlings age about 60 days, the mid-late maturing varieties should be 70 to 80 days, the autumn tomato seedlings about 25 days.
Second, early preparation for planting, seedlings to promote seedlings. 10-30 days before planting, do a good job in soil preparation, basal fertilization, covering the top film and skirt of the greenhouse, drainage around the shed, etc., so that when the larvae are planted, the humidity in the shed is lower and the temperature is higher, which is conducive to easing seedlings.
Third, control the amount of nitrogen fertilizer, using deep sorghum cultivation to promote root growth.
Fourth, timely pruning and pruning, put a frame, so that ventilation and good ventilation, and the use of growth regulators such as anti-dropping flower spray, promote fruit set, inhibit excessive vegetative growth.
5. After planting seedlings, spray the plants with equal amount of Bordeaux mixture or 77% WP 500-700 times every 15 days.
Six, timely ventilation. After the plants are rejuvenated, they should be allowed to ventilate and reduce the humidity in the shelter while maintaining a certain temperature. The beginning of fruiting and fruiting, it is necessary to put under the skirt of the end of the wind, the minimum temperature outside the night when not less than 15 °C, stay up late to be ventilated. Into the hot summer season, the plastic film can be removed, as in open field cultivation.
Seven, control of fertilizer. Bottom fertilizer is sufficient, generally do not apply fertilizer before flowering and fruit setting, especially the use of mulching, after sitting on the fruit, it began to appropriate fertilizer according to the situation.
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