First, choose suitable varieties Three optional master varieties: Six onion and green onion, drum thunder onion and Yunnan onion. For the cultivation of fresh products for sale, the selection of drum thunder varieties is the main choice for cultivation from late March to July, and Yunnan shallots are selected for the rainy season from August to September, and six and small shallots are selected for cultivation from September to January. For the cultivation of the onion-based products for sale in October, sowing of drum-breathing varieties with large heads and strong aromas should be adopted. Second, under the base pedicure and trim Choose fertile gardens that are easy to fill, and rotate with non-garlic crops. Individually replanted areas need to add 4000-7500 kg of red soil per acre to improve the soil. Garden before sowing, ploughing and drying in the sun. Basal fertilizer: Apply into the well-developed high-quality farmyard fertilizer 4000-5000kg or decomposed chicken and duck manure 700-1000kg, calcium phosphate 50kg, potassium fertilizer 10kg. Twist: According to the planting habits, the width is 1.2m, the height is 20cm, and the surface is smooth. Three kinds of onion processing Selected species characteristics, onion flap full, no spots, no disability, no mildew, no worms, undamaged onion peel flap, generally stripped to the single heart or double heart (that is, one or two of the top buds), Sort by large, medium and small grading. Fourth, reasonable close planting and seed use According to the purpose of cultivation and the characteristics of the varieties, it is cultivated with flat ridges. The pod spacing is from June to July 6-8cm, and from August to September, the high temperature period is appropriately relaxed to 8-10cm. It is appropriate to plant the culti . Seed amount per acre: should be based on different species of onion moisture, sowing time early, middle and late, such as drum Lei early (late March to April) per acre need to seed 325-350kg, medium (5-7 Month) 200kg or so. About 100kg Yunnan Shallot, Six and Scallions. The late onion water content is small, the amount of seed per mu is 30-40kg. Fifth, strengthen field management 1. Spray the herbicide in time after sowing time: Use 50% acetochlor for water per acre for 1000 times, wettable chlorophyllone for 800-1000 times, and spray the flour. 2, spray herbicide timely irrigation: After spraying the first irrigation, to fill foot, irrigation wet, planting onions and soil contact, for about 10 days Qimiao, full seedlings. If no seedlings are found within 10 days, they should be replanted in a timely manner. 3, do a good job of water-resistant seedlings: Qi seedlings, about 12-15 days after sowing, scratch the appropriate water-resistant seedlings, water control to the bottom of the groove sun. To promote the development of the underground roots, short-skinned aboveground, strong anti-reverse ability, so that growth in the middle and late. 4, scientific fertilizer: spring and summer shallots short growing period, usually one or two times top dressing, the first time in the 12-15 days after planting. The compound fertilizer with 17.5kg of compound fertilizer for the irrigation of Mu and the compound fertilizer of 15kg for the second time for the second time in 20-25 days. Autumn and winter shallots have a long growing period. The number of top dressings is the same as that of spring and summer fertilizers for the first and the second time, and nitrogen fertilizer must be added for the third time. Per acre with ammonium bicarbonate 75kg irrigation ditch. 5. Disease and Pest Control: Diseases such as gray mold, pythium, and soft rot are treated with 65% of 1000 times or 65% of zinc and 1000 times of potable water or 65% of zeozin water 800-1000 times. Liriomyza huidobrensis, Onion land fly, Plutella xylostella, Green onion thrips, and Phylloptera, sweet pest, with 50% phoxim emulsion water 1000 times or 2.5% cypermethrin emulsion formulated with water fog control. Sixth, appropriate harvest The spring harvest is generally 55-60 days, generally 38-45 days in summer and about 80 days in autumn and winter. After the harvest, the dead leaves are peeled, the sheath is white, the sand is no soil, and the tying is done by 1-5 kg. It can be put in the freezer at 17°C for 2-3 hours before being listed. Veterinary drugs can be roughly classified into four categories: ①general disease control drugs; ② infectious disease control drugs; ③ internal and external parasitic disease control drugs; ④ (including growth-promoting drugs). Except for biochemical immune products (bacteria, vaccines, serums, antitoxins and toxoids, etc.) for the prevention and treatment of infectious diseases, and special veterinary drugs such as special parasitic drugs for livestock and poultry and growth-promoting drugs, the rest are the same as those for human use, but the dosage , dosage forms and specifications are different. It has long been widely used to control livestock and poultry diseases. Veterinary Raw list,Tulathromycin A Powder Prcie,Bulk Ethopabate Powder Price,Norfloxacin Powder Price,Isoprenaline Hydrochloride Powder Xi'an Henrikang Biotech Co.,Ltd , https://www.xianhenrikang.com
Among veterinary drugs, commonly used are more than 20 kinds such as analgin, amoxicillin, florfenicol, ceftiofur, oxytetracycline, chlortetracycline, bacitracin, salinomycin, monensin, colistin, etc. . 60% of antibiotics are used for chemical treatment; 40% are used for chemical treatment, which not only has the effect of preventing infectious diseases, but also can promote the growth of livestock and poultry and improve the utilization rate of feed.