Organic fertilizers include all substances that can be used as fertilizers in addition to chemical fertilizers. They are usually human and animal waste, crop straws, and green manures. Organic fertilizer has comprehensive nutrients and a long-lasting and balanced fertilizer effect. It not only improves soil structure, improves soil fertility, promotes the release of soil nutrients, but also can supply nutrients to crops. It is particularly important for the development of organic agriculture, green agriculture, and pollution-free agriculture. However, many types of organic fertilizers have different functions. The application should be scientific and blind. In the application should pay attention to the following points:
Organic fertilizers are not balanced. Organic fertilizers contain many types of nutrients, which is an advantage compared to fertilizers with single nutrient sources. However, nutrients contained in the organic fertilizers are not balanced and cannot meet the needs of high yield and quality of crops. In the application of organic fertilizers, chemical fertilizers should be formulated according to the crop's requirements for nutrients. Even the farms that produce green foods should be given appropriate amounts of mineral fertilizers, and various foliar fertilizers should be applied during the growth of the crops.
Organic fertilizer has low nutrient content. Although the organic fertilizer contains many nutrients, its nutrient content is low, and its decomposition in the soil is slow. Under the condition that organic fertilizer is not used in large amounts, it is difficult to meet the needs of the crop for nutrient elements. Fertilizer has high nutrient content and rapid fertilizer efficiency. It can be supplemented according to the quantity of crops needed, but the fertilizer efficiency is short. In order to obtain high yields, organic fertilizers should be applied in conjunction with chemical fertilizers to make full use of their advantages to meet the needs of crops for various nutrient elements in terms of quantity and time.
Organic fertilizers need to be fermented. Many organic fertilizers contain germs, eggs, and weed seeds. Some organic fertilizers contain organic compounds that are not conducive to crop growth. Therefore, all organic fertilizers should be subjected to stacking, fermentation, and processing before they can be applied to the ground.
Organic fertilizer is contraindicated. Fully cooked organic fertilizers should not be mixed with alkaline fertilizers to avoid the volatilization of ammonia and reduce the nutrient content of organic fertilizers. Organic fertilizer contains more organic matter and should not be mixed with nitrate nitrogen fertilizer.
Food additives are compounds or natural substances added to food for the purpose of improving the color, aroma, and taste of food, as well as for the needs of anti-corrosion and processing technology. At present, there are 23 categories of food additives, with more than 2,000 varieties, including acidity regulators, anticaking agents, defoamers, antioxidants, bleaching agents, leavening agents, coloring agents, color retention agents, enzyme preparations, and flavor enhancers, nutritional fortifiers, preservatives, Sweeteners, thickeners, spices, etc.
Erythritol, Sweetener, Pigment, XOS , Carotene, fish oil
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