In the process of eggplant seedling cultivation, farmers are most prone to the problem of eggplant seedlings and aging seedlings, which is not conducive to the formation of strong seedlings, but also affects the growth of eggplant after transplanting, and even affects the yield of eggplant. Then what are the symptoms of the long seedlings and the aging seedlings when the eggplant is raised? How to prevent it? 1, symptom performance (1) Chang Miao After the seedlings are unearthed, they grow into tall seedlings, or the seedlings grow thinner, the internodes are long, and the leaves are thin and pale, and the long seedlings are easy to form deformed flowers (short flower) (2) aging seedlings The leaves of the seedlings are dark green, stalks are fine, the roots of the hard leaf are aging, the root tip is yellow, and the roots are less. After planting, the seedlings are slow and weak, and it is easy to fall and fall. 2, induced factors (1) The seedlings of the seedlings are too densely planted, and there is no time seedlings or seedlings after emergence. Or the night temperature in the seedbed is high, the light is weak (especially in the case of rainy days), and the humidity is high, which is easy to cause long seedlings. (2) The aging seedlings grow for a long time under low temperature (especially ground temperature) conditions, or the water in the seedbed is excessive or drought, or the fertilizer is burned, or the roots are damaged or the seedling age is too long, or the seedlings are over-controlled. Both are easy to cause aging seedlings. 3. Prevention and control measures for eggplant long seedlings (1) Selection of high quality seeds Planters should use seeds that are strong in germination. (2) Strengthening the management of nursery period When planters prepare seedbed soil, they should use nitrogen, phosphorus and potassium fertilizer reasonably. The sowing can not be too dense, and the soil will be covered in time to cool down after emergence, and the cover will be removed. In the seedling 1 leaf 1 heart time and time seedlings. Seedlings are planted in time before the seedlings enter the flower bud differentiation stage, and the seedlings are appropriately cooled. (3) Water control and fertilizer control To control the moisture of the seedbed, keep the soil surface dry and see the wind, pay attention to the wind. When the seedlings grow normally, there is generally no need for top dressing. (4) Actively adjust the temperature and lighting conditions According to the change of external temperature, maintain the appropriate temperature in the seedbed, especially the night temperature should be lower. In winter and spring nursery, measures should be taken to increase the light intensity and illumination time as much as possible, and artificial light can be added if necessary. In the summer and autumn seedlings, the sunshade net should be gradually removed to make the seedlings see light. (5) Inverted or cut at the right time Nutritional seedlings are smashed once every 10-15 days before planting. Seedling soil seedlings are planted 7 to 8 days before planting, first pouring water for 1 time, then cutting and placing, appropriately increasing the seedling distance, filling the gap with soil. It is necessary to gradually cool the seedlings before planting. (6) Spraying liquid prevention In order to prevent the growth of young seedlings, it can be sprayed once with 3-4 leaves of eggplant seedlings with 100-300 mg/kg of meperidine (helping auxin) solution; or in the case of 3-5 leaves of seedlings, 5-- Spray 10 mg/kg of the uniconazole solution once. (7) Timely seedlings After planting and slowing down the seedlings, it is necessary to timely seedlings to avoid high seedlings and long seedlings. 4, prevention and treatment measures of eggplant aging seedlings (1) Preparation of high quality seedbed soil To prepare the seedbed soil with good permeability, use the fully decomposed organic fertilizer to prepare the seedbed soil or base fertilizer. (2) Maintain proper temperature and light conditions Take measures to maintain the proper ground temperature and humidity in the seedbed, and try to make the seedlings more visible. (3) Reasonable seedlings In the seedling stage, it is not possible to transplant the seedlings several times. It is best to transplant the seedlings into the nutrient bowls at one time, and place the seedlings in the seedling beds according to the size of the seedlings. (4) Supplemental spray fertilizer If the seedlings are weak and the leaves are light green, they can be sprayed with 0.25% potassium dihydrogen phosphate solution and 0.25% urea solution, and then sprayed with water. (5) Promote seedling growth If the seedlings are aging, spray the seedlings with 20 mg/L gibberellin solution, spray 100 ml per square meter, and add fertilizer to see more light. (6) Do a good job in the management of seedling deferred planting If the ground temperature is lower than 13 degrees, it can not be planted in time. A layer of 15-20 cm thick seedbed soil can be laid in the seedbed, and the seedlings of nutrient or nutrient soil should be placed in the seedbed soil with a row spacing of 20 cm and a plant spacing of 20 cm. Full of gaps, according to normal management and not seedlings, so that the seedling age is extended to 120 days, to avoid root aging. The above are the symptoms, causes and prevention measures of eggplant emergence and aging seedlings. In the process of eggplant planting, farmers must prevent it in time. The appearance of eggplant and aging seedlings will have an impact on the growth of eggplant, thus affecting the economy. Revenue, so farmers must pay attention. For the wonderful pictures and popular comments about the emergence of aubergine and aging seedlings in eggplant, you may be interested in the following recommended contents. Welcome to read. Medical Nitrile Gloves,Nitrile Gloves Medium,Aql2.5 Industrial Gloves,Disposable Medical Nitrile Gloves Puyang Linshi Medical Supplies Co., Ltd. , https://www.linshimedicals.com
