1. Equally Important Laws There are 16 chemical elements known to be required for plant growth. Among them, carbon, hydrogen, and oxygen are present in the atmosphere and water. The 13 elements from the soil can be divided into two categories: nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur are abundant in the crop and absorb more. A few percent to several thousandths of dry matter is called a large number of elements, of which nitrogen, phosphorus, and potassium are the most important and are called "three elements," iron, manganese, zinc, molybdenum, boron, copper, and chlorine. The demand for crops is very small, accounting for 10,000 to 100,000 parts of dry matter, known as trace elements. Regardless of a large number of elements or trace elements, it is equally important for crops and they are indispensable. A certain trace element is missing, and although its requirement is only a few parts per million, there will be trace element deficiency and production loss. For example, the lack of boron in rape can lead to false flowers. Therefore, its importance is the same as a large number of elements. It is not negligible because of the small amount of demand. Therefore, it is called "the law of equal importance." 2, can not replace the various nutrients needed for the law crops, in the crops have their own certain functions, can not replace each other. In the absence of any nutrient element, fertilizers containing this nutrient must be applied. This is called "irreplaceable law." 3, the minimum nutrient law to ensure that the normal development of crops and obtain high yield, must meet all the nutrients it needs. There is a quantity that does not meet the needs, growth will be affected, and production will be constrained by this minimal nutrient element. 4. The nutrient return theory test results showed that 55-80% of the nutrients in the crop yield are absorbed in the soil. We cannot regard the soil as an inexhaustible “nutrient storehouseâ€. It must rely on fertilization. In the form of "returning" the nutrients removed by crops to the soil, the soil can maintain its original productivity. 5. The law of decreasing returns of fertilizer effect Under the condition of relatively stable other conditions, with the gradual increase of the amount of fertilizer, the crop yield also increases, but the increase in crop yield shows a decreasing trend. In other words, with the increase in the amount of fertilizer, the economic benefits of fertilization are gradually reduced. If the fertilizer is used excessively, it will lead to a reduction in production. 6. Comprehensive effects of production factors The output of crops is not only related to fertilization, but also related to other environmental factors such as moisture, temperature, CO2 concentration, light, and other environmental factors that affect crop growth. To make full use of fertilizers to increase their potential for production, we must consider other environmental factors. We can say that scientific fertilization requires a system engineering perspective. The characteristics of formula fertilization Formulated fertilization is characterized by "prenatal fertility." In other words, before farmers plant a certain crop, they understand what fertilizer should be used in their own land. How much is the best amount? We must not fail to achieve the desired output because of less application, and we must not cause unnecessary waste or even reduce production due to multiple applications. Therefore, the central problem to be solved in formula fertilization is to determine the use of fertilizer before the birth.
2-Piece Ostomy pouch MDK-BO-02 300ML
1-Piece Ostomy Pouch
A one-piece colostomy bags, drainable pouching system designed to be opened at the bottom when emptying. These colostomy bag machine are most suitable for colostomies or ileostomies. Ostomy bag colostomy barrier is a standard wear skin barrier that is gentle to the skin and allows for frequent pouch removal. To close the pouch, use the curved, beige clamp. Soft, beige disposable colostomy bag pouch panels on body side help provide comfort.
The features are soft and flex,standard wear, skin barrier, flat. The Chassis made in 100% hydrocolloid No tape border. Cut-to-fit skin barrier. Ultra-clear odor-barrier pouch film. Curved, beige pouch clamp. With comfortable ware pouch panel body side only. Not made with natural rubber latex.
Ostomy urostomy colostomy bag care products consist of sodium carboxymethylcellulose, adhesives made from medical hot melt adhesives, and separator paper or separators. Nursing equipment for ileum, colon, rectum or urethral stoma,The coloplast colostomy bag comes into contact with intact skin and intestinal lumen,Non-sterile supply. Colostomy bag reusable for stoma washing, care and collection of excreta and skin care around the stoma.
Use disposable colostomy bag, make sure the skin around the stoma is clean and dry before use. Remove the bags for colostomi from the package and separator or paper. Reshape the coloplast colostomy bag into the desired shape and size to fit the skin around the stoma. Apply the colostomy convatec bag to the skin around the stoma,adjust the shape of the paste again,Gently press so that it is firmly flat on the skin. Attach the stoma colostomy bag undercarriage to the stoma. The colostomy bag care can be peeled off the skin, don`t reuse. These one-piece-colostomy bag or two-piece-colostomy-bag are non-sterile product and is valid for three years under the condition of meeting the storage conditions.
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