Chili seedling characteristics
Photosynthetic assimilation of the material assigned to too much pepper leaf growth, causing much above ground, the main characteristics of leaves hypertrophy, stem stout, long plant growth, all strains were inverted triangle, the size of the flower is not neat, easy fallen petal fruit abscission, open flowers and far away from the stem tip growing point, delayed as a result, although fruit large, but the relatiely small number of fruit, fruit enlargement slower.This is moderate growth of pepper plants, people usually called crazy seedlings.Embodies do long shalt not only as a result, many peper height reached 1.2 ~ 1.5 m above, it's white also gradually fall off, the less or little result.Crazy one of seedling disease belongs to give priority to in order to prevent disease, found that the sooner, the better control efficacy, found that the longer, can take the less means, also the less obvious effect.Compared to the delay in the autumn and winter crop of chili, spring early seedling cultivation more prone to mad.
Chili crazy seedling
1 variety reasons
Pay particular attention to when buying pepper varieties, if buy fake and inferior products, may cause crazy seedling, serious and even to crop failures.Commonly used on high yield spicy type varieties mainly include Bulgaria's horn pepper, hybird 4;High-yield half spicy type varieties have abundant early 1, Sue, hybird pepper 5 1, li show a number of F1, to more than 1 m, high-yield varieties of sweet pepper, with 40 nongda, sweet pepper in no. 6, no. 2, shuangfeng bell peppers, shed pepper 3, saite F1, east star, and so on.
2 a weak sunshine intensity
Chili belongs to short day crops, 10-12 h bloom under the sunshine, if the winter sunlight hours are too short, light intensity, plant photosynthesis is restricted, the amount of matter assimilation is relatively reduced, material transportation slow, this part of carbohydrates to allocate to the internode and petiole organs, thereby reducing the root and bud of the material supply, moderate growth, formation and growth of harmful or fallen petal fruit drop.
Three temperature (especially the night temperature) on the high side
Temperature on pepper photosynthetic rate, respiratory intensity, substance movement speed, direction and assimilation of distribution has great influence.PengShi daytime temperatures exceed 30 ℃, night more than 18 ℃, make plant respiration consumption, promote the growth of vines and petiole long, and inhibit the transfer of nutrients on the flower and fruit.Because of assimilation material consume too much on the stem leaf growth, formation of crazy seedlings.
More than four soil water fat foot, plant metabolism disorder
Chili after engraftment, fertilizer level is higher, especially high nitrogen level, the water vapor slants big, add to the distribution of assimilative matter too much on the vines, inhibiting substance to reproductive growth, the proportion of the plant physiological and metabolic disorders, which gives the peppers (stem) too luxuriant vegetative growth, hindered the nutrients to the reproductive growth (bud and fruit) of normal transition, caused crazy seedlings.
Chili crazy seedling prevention countermeasures
1 optimize PengShi structure, increase the rate of backlighting, extend the light, increase the light intensity
PengShi design and implementation, should according to the local geographic latitude and main cultivation season, the planning and implementation of best the sun Angle of incidence.Use no drops of longevity membrane and keep the films clean and no pollution, no shading, in order to improve the light transmittance.Warm CaoShan strive for early jie late cover, in order to prolong the illumination of the daily hours.Main cultivation season in indoor add plating aluminum reflective screen, improve the utilization rate of 2 times of light.If in case of continuous wet weather (winter or early spring) to adopt fluorescent light.
2 reasonable fertilizer
Reasonable for water management, according to the hot pepper and water physiological needs, carries on the soil testing and fertilizer science reasonable irrigation, do fat enough water control, promoting the reasonable and proper control, coordination of pepper growth and development.On the specific operation, first built aswp, num engraftment, slow seedling water light, slow seedlings to before the door bell pepper harvest, not dry water, provinces 23 times watering fertilizer, fertilizer, 10 ~ 15 kg per 667 m2 with ammonium nitrate.Also can be used more biological bacterium agent or compound microbial fertilizer and pure potassium fertilization.At the same time for moderate growth pepper spraying on the leaf revulsant 200 times liquid control long flourishing, and cooperate with the rich boron chili to fill boron, is conducive to improve the pepper flower bud differentiation, improve the pepper fruit rate.
