Abnormal Symptoms of Greenhouse Eggplant and Prevention Methods

1. ossified seedlings
1.1 cases. in the early spring, seedlings of eggplant will often have small leaves, deep green color, thin stem, fewer roots, such seedling will grow weak, and easy to drop flowers and fruits.
1.2 etiology. The temperature of seedbed is low (less than 15 ℃ for a long time), which will make the seedlings more vulnerable to the diseases.
1.3 prevention methods. Temperature management is the most crucial. First choose varieties tolerant to low temperature, and use heating facilities to increase the temperature of the seedbed, timely watering, and strengthen temperature and moisture management.
2 drop flowers and fruits
After shedding 2.1 cases do not result in Bloom: cold period since the bottom of the yellow-and high humidity of David eggplant softened since charged.
2.2 etiology. The temperature is too low (less than 15 ℃) or too high (above 20 ℃); the lack of nitrogen, will lead to weak growth of the plant, fewer branches; too much water and fertilizer, excessive nitrogen, long-term nutritional imbalances and so on.
2.3 prevention ways. Strengthen management of temperature and take corresponding measures to decline the high temperature, and use plant growth regulator the protect flowers and fruits.
3 deformed fruit
3.1 ossified eggplant (the eggplant)
3.1.1 small fruit disease, skin matte texture hard poor taste.
3.1.2 etiology. During the period of fruit enlargement, there are low-temperature, weak sunlight or high temperature and strong sunlight; excessive fertilizer P, will impact the intake of boron and K; during the flowering period, low temperature and poor sunlight will lead to adverse pollen development.
3.1.3 light temperature control methods to strengthen management, timely liquidation films to increase the rate of transmission, or in indoor display reflective screen to increase the illumination. Colonization, the main application of phosphate fertilizer, every little late Oxfam, bogey excessive focus on the results of application of potash, phosphate fertilizer once due to excessive zombies fruit, using potassium, Boron (potassium sulfate, borax).
3.2 pairs are MILLER
3.2.1 Two-body deformity fruit disease, affecting commodity appearance, but does not affect quality.
3.2.2 etiology of the excess supply of fertilizer, growth regulators on the use of excessive concentration, a Multi eggplant skin deformities.
3.2.3 Control flowering strengthen temperature management, adequate water and fertilizer supply, the concentration of growth regulator should be provided within the framework of appropriate concentration increased (low temperature) or decreased (high temperature). 3.3 cleft eggplant, Matt eggplant
3.3.1 disease fruit cracking, E crack, peel dull, inferior quality.
3.3.2 etiology of yellow tea mite larvae hazards, the rough skin thickening changed, and continue to Block internal fetal development, resulting in the non-long fruit enlargement process, the drought skin hardens, then suddenly watering ; late fruit development, soil drought and water shortage, supply timely fashion.
3.3.3 prevention methods yellow mite larvae control tea with, and other anti-mite Pharmacy. Results period must not be dry, uniform watering.
4 parietal wilting
4.1 Plant disease bark top of the cracking, color green, yellow-edge Coke: concave top of the fruit, easy-to-dye cotton diseases, the rotten fruit.
4.2 etiology alkaline soils, low-temperature low-light period from the summer heat into light period, the Ministry of transpiration on the growing role, but weak root absorption capacity, resulting in the parietal lobe due to calcium deficiency, B deficiency and litter.
4.3 Methods of attention at this time of the foliage added calcium Boron, in the event we should pay attention to weather high temperature glare ventilation cooling, there can be sprayed asbestos disease Bordeaux mixture.
5 buds not open
5.1 ovary disease is not enlarged, bud tightening is not open.
5.2 etiology of boron deficiency.
5.3 Control of the surface 200 times borax solution sprayed boron or photosynthetic fertilizer.
Botrytis cinerea 6
6.1 Disease irregular spots on the leaves, dry or diseased leaves droop, on the surface a small amount of ash Health, stem lesion development for the long ellipse, humid, seriously, the fruit will necrosis , shedding.
6.2 etiology of low temperature and high humidity, light inadequate, excessive density, growth over the strength of the management timely fashion.
6.3 ways to strengthen control ventilation, timely removal doors eggplant following collateral, with the harvesting of the fruit on the move, timely old leaves in the bottom, so as to facilitate ventilation translucent, chemical control can be used for a smoke or smoked Ling Gray-such as control.
7 Vertically wilt
7.1 seedling diseases rarely occur, the general performance after fruiting symptoms, and often is the bottom, or from side to the whole development, also known as the "half crazy", wilting leaves turning yellow, stem vascular seriously When the whole death. 7.2 etiology of colonization to flowering period, average daily temperature lower than 15 ℃, and lasted for a long time, Stalinization of soil copper shortage, the plant disease resistance and immunity poor, vulnerable Vertically wilt disease and infection wither (Reason: Copper-bacteria can enter the body to protein synthesis blocked, the impact of their activities and propagation derivative capacity).
7.3 Prevention to implement rotation system, choose disease-resistant varieties, such as: fast round eggplant, Zhao Long Eggplant, Long Eggplant; used for grafting rootstocks (or hair powder 802), the seedling stage foliar application copper products, colonization, copper sulfate per mu topdressing 2 - 4 kg, seeding control efficacy obvious root perfusion, 50% DT WP 350 times, 50% wettable powder 1000 times, pouring 100 ml per plant. (Reproduced)