The response to vegetable problems
Drug seedlings, wilt seedlings, and seedling root seedlings are three kinds of seedlings that often occur in the process of vegetable seedlings. How to effectively manage these three kinds of problem seedlings? The reasons for the emergence of drug seedlings: First, misuse of pesticides or misuse of herbicides; Second, the application of pesticide concentration is too large or continuous repeated application; Third, the application of high temperature conditions; Fourth, the use of inferior Pesticides; Fifth, the use of pesticides that are not properly applied or that cannot be mixed. Control measures: First, spray water in a timely manner. If the leaves and plants cause phytotoxicity due to spraying liquid, if they are discovered in time, they can be quickly sprayed with plenty of water when the early liquid has not completely penetrated, spray water repeatedly 3-4 times, try to flush the liquid on the surface of the plant. Lose, and with the cultivator loose soil, promote root development, and quickly restore normal plant growth. The second is neutralization treatment, spraying plant growth regulators. According to the nature of pesticides causing drug injury, the use of drugs in the opposite of their nature, such as copper sulfate injury can be used 0.5% quicklime water, paclobutrazol poisoning can be sprayed gibberellin relief. The use of plant growth regulators such as brassinolide, avidin, cytokinin and chitin, alginic acid, amino acids, nucleotides, and full-vegetation foliar fertilizers to improve leaf resistance and reduce drug use harm. The third is to catch up with available fertilizer. According to the law of vegetable growth, after the vegetables are harmed by phytotoxicity, their growth is often inhibited. In this case, they must be watered in time and topped with water-soluble fertilizers. The wilting seedlings were mostly caused by the uncovering of all the coverings after the sudden rainy weather suddenly turned fine. Prevention and control measures: First, in the event of a sudden and cloudy day, the seedlings should gradually see the light. Do not immediately uncover all the coverings. They should be removed in batches and gradually increase the light. Ventilate at the height of the shed, use the size of the air outlet and the length of the air release time to adjust the temperature of the seedbed, and avoid passing the bottom wind. Second, shortly after the shading net was unveiled, if any seedlings are wilted, they must be covered immediately. After the seedlings return to normal, they must be re-opened. Do not water the wilt seedlings. The third is water spray and temperature control. Water spray increases air humidity, which is open source. When the air humidity is high, the transpiration of the leaves is significantly reduced. This is the main reason why the vegetables in the shed are large in size and have large pores. Water spray can also make the leaves directly absorb water and relieve wilting symptoms. Temperature control reduces the intensity of leaf transpiration, which is throttling. The influence of temperature on the relative humidity of the air is very great. When the plants appear wilting, appropriate temperature reduction can increase the relative humidity of the air, reduce the intensity of transpiration, and alleviate the wilting. Because of the high humidity and high temperature of the bed soil, the roots of the loquat seedlings are damaged due to yellowing and wilting of the leaves, and the seedlings stop growing. Prevention measures: First, reduce humidity in time. Select a soil with strong permeability for seedbeds. When growing seedlings in shelters such as greenhouses or greenhouses, generally the seedbeds are not significantly droughty (the topsoil does not hold clusters). Watering or no watering should be minimized. The amount of watering when the drought is obvious Should not be too large. The humidity in the bed is too large to cover hay ash, and proper ventilation and dehumidification are also available. The second is to give enough farmyard fertilizer. In order to raise vegetable seedlings, it is necessary to increase farmyard manure, not only to cultivate fertility, but also to cultivate strong seedlings, to improve the disease resistance of vegetable seedlings, and to increase the temperature of the soil and reduce the occurrence of diseases. The specific approach is to mix the fully cooked farmyard fertilizers with the bed soil before planting the vegetables. The third is timely ventilation. After the cotyledon is unfolded, the cover is ventilated and a layer of fine dry soil is uniformly spread in the seedbed, and then the cover is tightly covered, which can reduce the humidity of the bed soil. Fourthly, once the roots have come off, we must promptly ventilate and discharge moisture, and we can also apply fine-dry soil and ash to absorb moisture. The fifth is cultivating loose soil. In general, most vegetable roots grow well when the soil oxygen concentration is above 8%. Due to the poor permeability of the soil and the activity of roots and microorganisms, the oxygen concentration is much lower than that of the atmosphere. Especially when the soil is compacted and accumulated, the anaerobic respiration of the roots leads to an increase in toxic substances, which is not conducive to root growth. Timely plowing and ploughing and improving soil permeability are the guarantee for promoting root growth and cultivating robust plants. As a professional supplier of medical apparatuses and instruments, Suzhou Medtion International Trade Co., Ltd. is located in Zhangjiagang City, Jiangsu Province. We are wholly owned subsidiary of Jiangsu Redleaf Medcial Equipment Co., Ltd who is a professional Medical equipment producer for 30 years. We specialize in developing and producing stretchers,anti-coronavirus products, first-aid product, Funeral Products, ward products, Diagnosis Device, emergency rescue product and so on. We supply one stop purchasing of Medical Equipment for all overseas customers. Our products can be made in accordance with customers' requirements. With advanced technology, scientific production equipment, reliable product's quality, conform contract, stable credit and excellent service, we have got the production aptitude and passed all quality authentications successfully. We warmly welcome you to cooperate with us. Protective Accessories,Disposable Protective Accessories,Medical Protective Accessories,Sterile Protective Accessories Medton Medical , https://www.medton.cn