First, bagging protection, seedling protection. The seedlings that have been planted in orchards can be covered with snakeskin bags or washed ammonium bicarbonate bags, and the seedlings are also covered; in addition, the growers who concentrate the seedlings cover the seedlings with a film in the form of arches and cover the straw under the canopies. Or mulch, etc., in order to keep the frost ice frozen.
Second, increase the temperature with smoke, insulation frost. Before the frost came, the orchards prepared chaff, sawdust, turf, leaves, dead wood, weeds, etc. as fuel, and set about 5 cigarettes per acre to ignite on the eve of the frost.
Third, cover. Cover 10-20 cm with straw, straw, etc. around the tree tray, or cover it with plastic film, and use straw to wrap the trunk to increase the soil temperature and protect the tree. The available thin film can cover the entire tree.
Fourth, irrigation method. Before the frost comes, watering the roots in the canopy drip line can transfer the temperature of the lower layer of the soil. At the same time, the water can absorb the low temperature in the air, so that the root system can be protected from frost.
Fifth, spraying plant power 2008. Plant power was sprayed in time before and after the frost, and sprayed 2 to 3 times every 5 to 7 days. In order to improve the ability of fruit trees to resist cold, timely restoration of tree vigor.
China: In accordance with Article 54 of the Food Hygiene Law of the People's Republic of China, Article 28 of the Hygiene Management Measures for Food Additives, Article 2 of the Hygiene Management Measures for Food Nutrition Enhancers and Article 99 of the Food Safety Law of the People's Republic of China, food additives are defined as: Food additives refer to artificial or natural substances added to food for the purpose of improving quality, color, aroma and taste of food and for the purposes of preservative, fresh-keeping and processing. According to GB 2760-2014 National Food Safety Standard for The Use of Food Additives, food additives are defined as "artificial or natural substances added into food for the purpose of improving food quality, color, aroma and taste, as well as for the needs of anti-corrosion, fresh-keeping and processing technology. Spices for food, base agents in gum-based confectionery and processing AIDS for food industry are also included.
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