(1) Classification fertilization. The leaves and flowers should be treated with nitrogenous fertilizer to make the leaves fresh and brittle and green. The flower of the view flower should be treated with more phosphorus and potassium to make the plants bloom early and produce early results. The bulbous flowers should be applied with more potassium to enrich the bulbs.
(2) Apply fertilizer timely. When it was found that the leaf color of the flower became lighter and growth slowed down, fertilization was the most appropriate. According to the different growth stages of flowers, different fertilizers and different amounts are applied. For example, nitrogen fertilizer is the main seedling stage and thin-fertilizers are used to promote rapid and robust growth of seedlings; after the seedlings are established, fertilization concentrations can be appropriately increased. And increase phosphorus, potassium fertilizer.
(3) with base fertilizer fertilizer. Basal fertilizer is dominated by organic fertilizers, which provide long-lasting and stable fertilizer supply, and can improve soil structure and physical and chemical properties, and increase soil fertility. Top dressing is mainly chemical fertilizer, which has the characteristics of more nutrients, quicker fertilizer effect, and higher intensity of fertilizer supply. It is a necessary supplement for basal fertilizer.
(4) Apply nitrogen, phosphorus and potassium fertilizers. For example, partial application of nitrogen fertilizers tends to cause shoots to grow long and delay flowering or non-flowering; partial application of phosphate fertilizers will inhibit the absorption of nitrogen and potassium, cause poor plant growth, and can easily cause iron deficiency and zinc deficiency; partial application of potassium fertilizer will inhibit plants. The vegetative growth occurs with magnesium deficiency.
(5) Apply foliar fertilizers. In the period of vigorous growth or lack of trace elements, spraying foliar fertilizers as appropriate can timely supplement the lack of nutrients in the flower roots. However, it is necessary to strictly control the concentration of foliar dressing so as not to burn the leaves.
(6) Apply fertilizer when soil is wet. Fertilizing when the soil is dry, it is easy to cause the leaves and leaves of flowers to lose water and wither, and in severe cases it will cause the plants to die. On the contrary, due to high soil moisture, poor fertility and poor fertility, fertilization on rainy days can easily be washed away by rain, and it can cause crops to grow in length.
(7) Appropriate amount of soil after fertilization. Many people are accustomed to applying fertilizers to the topsoil. This will not only make the fertilizer less volatile, but it will also burn the root system. Especially in hot and dry weather, it will volatilize faster and cause more damage. Therefore, appropriate amount of soil should be applied after fertilization to prevent fertilizer loss and improve fertilizer efficiency.
Seven taboos:
(1) Apply fertilizer to newly planted plants. The roots of newly planted plants have many wounds. If they are stimulated by the outside, the wounds will not heal easily, causing rot and even death of the plants.
(2) Fertilize weak plants. Weak and weak plants have weak growth potential, poor photosynthesis, slow metabolism, and low absorption capacity for fertilizers. If they are fertilized casually, they can easily cause fertilizer damage.
(3) Fertilization at flowering stage. The fertilization at the flowering stage will promote the vegetative overgrowth of the plants, which will easily lead to leggy, causing budding and falling flowers.
(4) Dormant fertilization. The flower stops or slows growth during the dormancy period. If the fertilizer is applied, it will break the dormancy, prompting the plant to continue to grow and affect the flowering in the coming year.
(5) Fertilization under roots. When planting flowers, the roots of the plants should not be placed directly on the basal fertilizer, but a layer of soil should be added to the fertilizer. Otherwise, it is not only unfavorable for the fertilizer to be fully absorbed and utilized, but also can easily harm the root system. In addition, top dressing should be considered as the growth of the plant, the hole is applied in the appropriate place from the root to absorb the root system.
(6) Apply fertilizer. Applying organic fertilizer without sufficient maturity to the flowers not only facilitates the transmission of pests and diseases, but also causes the organic fertilizers to ferment and heat during the decomposing process and to burn the roots of the plants.
(7) Apply concentrated fertilizer. To fertilize flowers, we must strictly control the amount of fertilizer, avoid excessive concentration or too much, otherwise it will make the roots of the plant burn, cause serious deaths, generally should be "bare manure applied."
Medical protective masks refer to self-priming filter dustproof medical protective equipment that can filter particles in the air, prevent the spread of certain infectious microorganisms in the respiratory tract, and block droplets, blood, body fluids, secretions, etc.
Medical protective masks are masks made of one or more fabrics that have isolation effects on viral aerosols, virus-containing liquids, and so on. Under the respiratory airflow, it still has a barrier effect on viral aerosols, virus-containing liquids, etc., and when removed, the outer surface of the mask does not contact the human body, can filter particulates in the air, and block droplets, blood, body fluids, secretions, etc. . The use of medical masks includes adhesion testing, training, model selection, medical treatment and maintenance.
Composition and function: The Medical Protective Mask consists of a mask face and a tightening belt. The mask face is divided into three layers: inner, middle and outer. The inner layer is ordinary sanitary gauze or non-woven fabric. Propylene fiber melt-blown material layer, the outer layer is non-woven fabric or ultra-thin polypropylene melt-blown material layer. This high-efficiency medical protective mask is highly hydrophobic and breathable, and has a significant filtering effect on tiny virus-carrying aerosols or harmful fine dust, and the overall filtering effect is good.
The medical protective mask has a good fit with the wearer's face, can filter particles in the air, block pollutants such as droplets, blood, body fluids, secretions, etc., and can filter non-oily particles by more than 95% Personal protective equipment commonly used to deal with airborne diseases.
Product specifications: According to the national standard GB 19083-2003 "Technical Requirements for Medical Protective Masks", important performances of medical protective masks include filtration efficiency, adhesion, liquid barrier performance, comfort, hygiene, and biological safety tests.
Scope of application: Medical protective masks are better protective products. It is recommended to wear when there is serious environmental pollution or sudden medical infectious diseases (such as respiratory tract infectious diseases), to prevent the spread of viruses from patients or the environment to users.
Important indicators: including non-oily particle filtration efficiency and airflow resistance.
(1) Filtration efficiency: Under the condition of air flow (85 ± 2) L / min, the filtration efficiency of aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol is not less than 95%.
(2) Tightness: The overall fit factor of the mask should not be less than 100.
How to use: How to wear a head mask
(1) Gently pinch the nose clip and place the mask on the face to ensure that it can cover the nose and mouth.
(2) The upper elastic band is fastened on the head to prevent air from entering.
(3) Tighten the lower elastic band around the neck.
(4) Be sure to fully open the mask to minimize the number of layers used during breathing.
How to wear earhook masks
(1) Pass the ear straps with both hands, place the nose clip on the upper part, and wear the mask on the nose and mouth
(2) The ear strap should be placed at the base of the ear and spread from head to toe, so that the folds of the mask are fully unfolded, which helps to cover the face to the greatest extent and minimize the number of layers required for breathing.
(3) Gently pinch the nose clip to prevent air from entering.
Surgical Face Mask,Disposable Surgical Mask,Disposable Protective Mask,Surgical Face Mask Disposable
Guangzhou Aikangli Medical Technology Co., Ltd. , https://www.aikanli.com