At present, the foliar dressing has been widely used in agricultural production, especially in the middle and late stages of growing crops. It has the advantages of low cost, quick effect and obvious effect. In order to improve the effect of foliar dressing, based on years of production experience, the following six points should be mastered. It was determined that the best spraying period had different crops with the best fertilizer-fertilizing time. The spraying was early and the seedlings were small, the leaf area was narrow, and the effect of sucking fertilizer was poor. Late spraying delayed yellowing and aging of the leaves, and the function of sucking fertilizers was reduced. Delayed spraying of some crops will also cause late-maturing glutinous rice, affecting yield and reducing the value of commodities. To determine the appropriate amount and concentration of different crop species, the number of foliar spray fertilizer and spraying concentration are not the same. The grain-per-mu spray rate is 30-40 kg and the concentration is 1%-2%. The amount of spraying fertilizer for stems and leaves is 45-55 kg, the concentration is 0.5%-1%, the spraying frequency is 2-3 times, and the crops with more leaves and hairs can be added with some adhesives such as washing powder and soap. Liquid, etc., to enhance the adhesion of liquid fertilizer on the leaf surface, to extend the suction time of the leaves. Choosing good spraying weather and time, the goodness and poorness of the effect of foliar dressing, and spray fertilizer weather, temperature, wind speed, and time have a certain relationship. In different crops, the mesophyll cell structure is tight, the pore size and the development time are different. When the leaves are sucking fertilizer, they need certain temperature and humidity. Spraying weather should be selected on a cloudy or sunny day in the morning or after 4 pm to avoid high temperature light irradiation at noon, so as to avoid excessive evaporation of liquid fertilizer affect the effect of suction. The temperature during spraying fertilizer should reach 25°C-30°C, the liquid temperature of the liquid fertilizer should be between 20°C and 28°C. The water temperature and the low temperature can affect the effect of spray fertilizer. In the weather where the wind speed is too high, the effect of top dressing is not satisfactory. In addition, rain should be sprayed within 2 hours after the spray. One of the choices of the plots to be sprayed is the plot of defermented fertility at the late stage of base fertilizer deficiency. The second is that the agricultural crops are prone to or have some kind of land shortage. The third is the desire to obtain high-yield, high-effective plots, such as nurseries, flowers, greenhouse vegetables, corn, rapeseed production and so on. The strength of the leaf suction fertilizer during the season of leaf dressing is closely related to the temperature. Generally, high-temperature fertilizer absorbs more fertilizer, and low-temperature weather absorbs less fertilizer or even no fertilizer. Seasonally, the foliar dressing is mainly from early spring to late autumn. From the stage of crop growth, it is mainly the period from vegetative growth to vegetative and reproductive growth. Choosing the right type of fertilizer Fertilizers should be based on the needs of the crop to determine the type of fertilizer, symptomatic fertilizer, quick-impact supplement. Generally soluble in water-soluble chemical fertilizers (nitrogen, phosphorus, potassium, micro-fertilizer), biological bacteria and other fertilizers, with the use of. Fertilizers can be applied individually or in several combinations.
Oropharyngeal Airway devices are often used as [bite blocks" after a patient's trachea has been intubated, in order to prevent the clenching of the teeth on the Endotracheal tube. Oropharyngeal airway devices are responsible for up to 55% of anesthesia-related dental complications.
Features&Benefit
Oropharyngeal airway is made of medical grade PE.
Maintains a gas pathway through the oral cavity and pharynx.
Araumatic soft-rounded edges.
Anatomically correct design.
Resists to collapse.
Smooth inner and outer surface.
Bite block provides access fro suction catheters.
Flexible to ensure dental protection.
Sterile and clean pack bulk packaging.
Color coded.
Available with FDA, ISO certificates.
Color-coded for easy sizes identification.
Size 40mm/000#-120mm/6#, Suitable for neonate, pediatric ,adult
Pattern Guedel Airway, Medical Airway Management, Disposable Oropharyngeal Nasal Airway, Guedel Oropharyngeal Airway, Guedel Opa Hangzhou Trifanz Medical Device Co., Ltd , https://www.cfzmed.com