The reasons for the leggy tomato plant leggy
1. The soil is too wet, and the relative humidity is about 80%. Nitrogen fertilizer is used more often.
2. Continuous rainy weather, air humidity is often higher than 50% -60%, lack of light.
3. Implanting too dense or poor ventilation.
The cultivation of peppers in the sheds, the first door pepper often can not sit, is due to high temperature and humidity. The temperature of autumn tomatoes is too high, nitrogen fertilizer is too high, and the lack of timely planting is also easy.
Major preventive measures
1. Control seedling age and timely planting. Strictly control the seedling age, such as the general early-maturing tomato seedlings age about 60 days, the medium and late-maturing varieties should be 70-80 days, autumn tomato seedlings about 25 days. 2. Early preparation for planting, promote seedlings and seedlings. 10-30 days before planting, do a good job in soil preparation, basal fertilization, covering the roof membrane and skirt skirting, ditch 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 slow seedlings.
3. Control the amount of nitrogen fertilizer, using deep sorghum cultivation to promote root growth.
4. timely and appropriate amount of pruning leaves, scaffolding, 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 the seedlings, the plants were sprayed with equal amount of Bordeaux mixture or 77% of WP 500-700 times every 15 days. 6. Ventilate in time. 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, can remove plastic thin desert, like open field cultivation.
7. Control the 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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