Winter Asparagus Overwintering and Field Management in Qingyuan Garden

The winter field management of asparagus includes a series of measures such as clearing the garden, top dressing, watering, loose soil, disinfection, and weeding. Its purpose is to ensure safe asparagus overwintering and to fully prepare for harvesting in the following year. Clear Garden refers to a thorough clean-up of the shoots, which mainly removes withered asparagus stems and debris. Clear Garden is not only conducive to harvesting, but also an important measure for the prevention and control of diseases, insect pests, and weeds. The Qingyuan Garden must be clean and thorough, especially for some lands with relatively serious diseases and insect pests. The Qingyuan Garden will be conducive to the reduction of pathogens and thus control the occurrence of diseases. The specific method is as follows: 1. Pull out the dead branches and clean the shoots. When the shoots of the shoots of the asparagus shoots are completely withered, the shoots are individually removed by hand. When the aboveground part is not completely withered, it cannot be removed, otherwise it will cause waste of nutrients, affecting the yield and quality of the next year; again, the undisturbed stems will not be easily removed, and it will be easy to remove the easily damaged scale buds. In addition, do not use a knife to clear the garden, be sure to remove the dry stems a single, remove the debris should be clean, together with litter to sweep out the shoots, concentrated burning. 2, soil disinfection, prevention and control of pests and diseases. After strictly cleaning the garden, a considerable amount of germs still remains in the soil. In order to further reduce the number of pathogens and control the occurrence of diseases, soil disinfection should be carried out after clearing the garden. The methods are: (1) spraying 600-800 times of chlorothalonil or 50% of bacteria 300-500 times solution of Ling; (2) Irrigation with 500-600 times of carbendazim or 120-200 times of agricultural antibiotics; (3) Spread with carbofuran mixed on the soil surface, 1.5 kg per acre of furazolidin Earth 15 kg. 3, top dressing, watering, loose soil, weeding. The ditch is applied on both sides of the plant, and the fertilizer should be kept away from the roots during the top dressing. Generally, 50 kg of compound fertilizer is applied per mu, and 1000 kg of fertilizer is used to compost the high-quality soil. After timely dressing, the fertilizer should be timely watered and the soil must be removed to ensure soil moisture, temperature and temperature. . After fertilization, spraying herbicide chlorpheniramine, with 140-200 ml per acre, to prevent weeding in the next year (before spring tender stems sprouting, after cultivating soil, spraying herbicide mixture, chlorofluorochloride 140 ml per mu Gulong 70 ml, control annual weeds, herbicides are disabled during harvest). Note: (1) The removal of dead branches should be carried out in the fine weather in the next few days, and watering can not be carried out immediately after pulling out, otherwise it will easily cause wound infections and result in decay of underground parts. (2) Residual stems and litter must be thoroughly removed and burned away from the field. (3) Fertilizer must be kept far away from the plants when topdressing, without damaging the root system, and sufficient manure must be applied.

Food Additives refer to the chemical synthesis or natural substances added to food to improve the quality, color, aroma and taste of food, as well as the need for preservation and processing technology. Food additives are a term that refers to the chemical synthesis or natural substances added to food to improve the quality, color, aroma and taste of food, as well as the need for preservation and processing technology. Food additives are generally not food and may not have nutritional value, but they must conform to the above definition, that is, they do not affect the nutritional value of food, and can prevent food spoilage, enhance food sensory properties or improve food quality.

Common food additives in spices, candy and chocolate in general have essential oils, flavors, powder flavor extract several types. Each type has numerous varieties, such as in candy and chocolate, according to the aroma type can be divided into fruit type, nut type, frankincense type, flower type, wine type and other different varieties.

1. preservatives: mainly used in carbonated drinks, fruit paste, jam, pickled fruits, preserves, pickles, and sauce.

Oil, vinegar, juice drinks, meat, fish, eggs, poultry food, commonly used are: benzoic acid, sodium benzoate, sorbic acid, potassium sorbate and so on.

2. coloring agent: mainly used in carbonated drinks, fruit juice drinks, confectionery, pastry color, sugar.

Fruit, hawthorn products, pickled vegetables, ice cream, jelly, chocolate, cream, instant coffee and other foods. Commonly used are: amaranth, carmine, lemon yellow, sunset yellow, caramel pigment and other synthetic pigments. Some natural edible pigments, such as sodium copper chlorophyllin, are mainly extracted from plant tissues, but their pigment content and stability are generally not as good as synthetic pigments.

3. sweeteners: sweeteners for food. Commonly used are: saccharin sodium (also known as saccharin), sodium cyclohexylaminosulfonate (cyclamate), maltitol, sorbitol, xylitol and so on. There are many foods that use sweeteners. Like: beverages, pickles, cakes, biscuits, bread, ice cream, preserves, candy, seasonings, canned meat and other almost everyday foods will be added with different kinds of sweeteners.

4. Puffing agent: some candy and chocolate products, as well as some fried products, puffed food, fermented flour products. The commonly used leavening agents are sodium bicarbonate, ammonium bicarbonate and compound leavening agents.

5. Thickener: It is a kind of hydrophilic polymer compound with stable, emulsified or suspended state, can form gel or improve food viscosity, so it is also called gel, gelling agent or emulsified stabilizer.

6. Emulsifier: A kind of surfactant whose molecule usually has hydrophilic group (hydroxyl) and lipophilic group (alkyl). It is easy to form an adsorptive layer at the water-oil interface, thus changing the surface activity between the phases of the emulsifier to form a uniform emulsifier or dispersion, so as to improve the structure, taste and appearance of food.

7. Bulkiness agent: Food additives with grain flour as the main raw material, which produce gas during the processing (heating process) and make the structure become homogeneous and dense porous structure, and make the food loose and crisp.

8. Defoamers: In the process of food processing, with the ability to eliminate and suppress liquid surface bubbles, so that the operation can proceed smoothly.  Anticoagulant prevents aggregation or agglomeration of powdery or crystalline foods.

9. Colorants: Food additives that promote people's appetite and increase the value of food products.

10. Antioxidants: Food additives that prevent and delay the oxidative deterioration of food surfaces by inhibiting the activity of oxidases by hydrogen atoms, blocking oxidative chain reactions, or forming complexes with deoxygenated groups in the molecules of oxidizable components of food.

11. Tissue improver: A Food Additive that improves the appearance or feel of food by retaining water, bonding, plasticizing, thickening, and improving rheological properties.

12. Flour improver: a kind of additives to improve the quality of flour, can improve the yield, improve flour whiteness and gluten strength.

13. acidity regulator: it has the function of improving food quality, and is more widely used in all kinds of foods. A considerable number of candy and chocolate products use acidic agents to regulate and improve the aroma effect, especially fruit-based products. Commonly used are: citric acid, tartaric acid, lactic acid, malic acid and so on.

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Food Additive

Additives In Food,Sodium Dehydroacetate,Methyl Cyclopentenolone,3 4-Dihydroxybenzoic Acid

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