Causes and prevention of leggy and fruity vegetables in greenhouses

Solanaceous vegetables, especially tomatoes, are prone to leggy after planting, which is characterized by thick plant stems, large and thick leaves, buds and flowers that are thin and weak, inconclusive, or thin stems, prominent stem sections, thin leaves and pale , Flower buds, thin flowers, falling flowers and falling fruit. General late-maturing varieties Yiteng Chang. The main reasons for tomato plant growth in spring greenhouses are excessive soil moisture, relative humidity of about 80%, high nitrogen fertilizer, or continuous rainy weather, air humidity is often higher than 50%-60%, insufficient light, excessive colonization, or poor ventilation and ventilation. . In the greenhouse, peppers are cultivated. The first door pepper often cannot stand, which is caused by high temperature and high humidity. The temperature of autumn tomatoes is high, especially when the night temperature is high, nitrogen fertilizer is high, and the lack of timely planting is also easy to grow. Preventive measures: 1. Controlling seedling age and timely planting. Strictly control the seedling age, such as the general early-maturing tomato seedlings should be about 80 days old, late-maturing varieties should be 90-100 days, autumn tomato seedlings should be 25 days or so. 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 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. 3. Control the amount of nitrogen fertilizer, using deep sorghum cultivation to promote root growth. 4. Timely and appropriate amount of pruning leaves, scaffolding, ventilation and good ventilation, and the use of growth regulators such as tomato spirit spray, promote fruit setting, inhibit excessive vegetative growth. 5. After planting seedlings, shoots were sprayed every 15 days with equal volume of Bordeaux mixture or 77% of WP 500-700. 6. Timely winds. 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. 7. Control fertilizer. Bottom fertilizer is sufficient, generally do not apply fertilizer before flowering, especially with plastic film. After sitting on the fruit, it began to chase fertilizer water as appropriate.

A


Acariasis

African Horse Sickness

African Swine Fever

Aino Disease

Akabane

Amblyomma hebraeum

Amblyomma variegatum

American Cattle Tick

See: Boophilus annulatus

Anthrax

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B


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See: Cat Scratch Disease

Baylisascariasis

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Boophilus microplus

Botulism

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Brown Ear Tick

See: Rhipicephalus appendiculatus

Brucella abortus

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Brucellosis

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C


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Campylobacteriosis

Canine Influenza

Caprine Arthritis and Encephalitis

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See: Ixodes ricinus

Cat Scratch Disease

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See: Bovine Babesiosis

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See: Taenia



D


Dermatophilosis

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Dourine

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E


Eastern Equine Encephalomyelitis

Ebola Virus Disease

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Egg Drop Syndrome

Ehrlichiosis

Enterovirus Encephalomyelitis

Epizootic Hematopoietic Necrosis

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Epsilon Toxin of Clostridium perfringens

Equine Babesiosis

See: Equine Piroplasmosis

Equine Encephalitides

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