Phosphorus and potassium application of phosphorus can promote the development of rapeseed roots and enhance rapeseed resistance; potassium can improve rapeseed cold, disease resistance, lodging resistance. Therefore, in the process of chasing fertilizers, the amount of nitrogen fertilizers should be controlled or reduced, so as to avoid the plants being tender and juicy, and the ability to resist coldness will be deteriorated.
Re-applying the wax fertilizer farmer said: "A thousand thousand irrigates, not as good as a wax cast." This fully illustrates the role of rapeseed fertilizer. The application time of wax fertilizer is 10~15 days before the “winter solsticeâ€. Generally, 1200~1500kg of pig cow manure per mu, or 2500~3000kg of earth fertilizer, can increase soil temperature 2~3°C, effectively reduce the wintering seedlings. The damage caused by freezing of the soil in the plough layer also has the effect of winter spring bloom.
Increased cover covering rape seedlings with soil miscellaneous fertilizer, grass ash and crop stalks before winter can maintain relatively stable ground temperature, reduce transpiration of leaves, avoid direct damage of cold air to the leaves, and can also bridge the earth seam to prevent air leakage. Such as covering rice straw, 200-300 kilograms per acre, not only protect the antifreeze, but also increase the soil organic matter. The straw that covers the surface of the crop can be naturally implemented in the event of rainfall, and generally does not affect the photosynthesis of rapeseed.
Spraying paclobutrazol on rapeseed plots with early, long-growth, and obsessive trends due to sowing and planting, spraying paclobutrazol solution before and after December 20th can make the plants dull, and the leaf color turn green to prevent or reduce freezing injury. Spraying method: 15% paclobutrazol wettable powder per acre 50 ~ 60 grams, 60 kg of water evenly sprayed leaves, pay attention not to spray, not heavy spray.
The foliar spray fertilizer can be sprayed with foliar fertilizer before winter, and the key is to spray phosphorus and potash fertilizer, which can increase the cell liquid concentration, lower the freezing point, and enhance the ability to resist cold. During the overwintering period, potassium dihydrogen phosphate, active element and Huimanfeng solution were sprayed, and 0.2% borax solution was sprayed on the boron-deficient rapeseed, which was favorable for freezing and seedling protection.
Controlling early emergence of early rapeseed rape not only consumes more nutrients, but also has weaker cold resistance. For the plots with signs of early onset and early flowering, deep cultivating and damaging part of the root system can delay the occurrence of early infestation and early flowering. The early rape and early flowering rapeseed can be selected. After the Spring Festival, the weather can be sunny and the temperature is high. When picking pods and applying topdressing nitrogen fertilizers in time, it promotes plant regeneration and reduces loss of frost damage.
Veterinary Drug Preparation For Poultry
Medicine for poultry.
Medicine for cattle,including antibiotics, hormones, feed, vitamin nutrients, etc.
Veterinary drugs refer to substances (including drug feed additives) used for prevention, treatment, diagnosis of animal diseases or purposeful regulation of animal physiological functions.
Veterinary drugs can be roughly divided into four categories: â‘ general disease prevention and treatment drugs; â‘¡ Drugs for prevention and treatment of infectious diseases; â‘¢ Drugs for prevention and treatment of internal and external parasitic diseases; â‘£ (including growth promoting drugs). Except for the biochemical immune products (vaccine, vaccine, serum, antitoxin, toxoid, etc.) for the prevention and treatment of infectious diseases, as well as special veterinary drugs for livestock and poultry parasitic diseases and growth promoting drugs, the rest are the same as those for human use, but the dosage, dosage form and specifications are different. It has long been widely used in the prevention and control of livestock and poultry diseases.
More than 20 kinds of veterinary drugs are commonly used, such as analgin, amoxicillin, florfenicol, ceftiofur, oxytetracycline, chlortetracycline, bacitracin, salinomycin, monensin, colistin, etc. 60% of antibiotics were used in chemotherapy; 40% is used as feed, which can not only prevent infectious diseases, but also promote the growth of livestock and poultry and improve the utilization rate of feed.
Among the Antiparasitic Drugs, in addition to the common anti helminth drugs (mebendazole, levamisole, thiadiazine, etc.), anti schistosomiasis drugs (antimony agent, nithiocyandiamide, praziquantel, etc.) and anti tapeworm drugs (niclosamide, etc.), the special anti Fasciola hepatica drugs (nitrochlorophenol, trichlorobenzole, etc.), Trypanosoma, and pyroplasmosis drugs (antracel, suramin, chloramphenicol, etc.) for livestock and poultry are also used Imidacloprid and other insecticides (organophosphorus insecticides). A macrolide antibiotic was found to have a significant killing effect on parasites such as gastrointestinal nematodes, Dermatophagoides, blood sucking lice, especially Sarcoptes scabiei. Coccidiosis is a serious threat to the safety of chickens and rabbits. There are more than 30 kinds of commonly used anticoccidial drugs, including synthetic drugs (such as chlorobenzoguanidine, changshanone) and antibiotics (such as monensin, salinomycin), which are often used alternately.
Biochemical immune products are mainly used to prevent animal anthrax, brucellosis, anthrax, salmonellosis, and a variety of viral infectious diseases.
Injections are commonly used in veterinary drug preparations, but their specifications are several times larger than those for human use. Oral veterinary drugs are usually in powder or microcapsule form, as feed additives, mixed into the feed for free feeding of livestock and poultry. Anabolic hormone can increase the benefit of raising livestock and poultry. It is mainly made into implant for subcutaneous implantation. Transdermal preparations and medicated baits for aquaculture are emerging.
germicides in breeding period,fungicides at rest,Quick acting bacteriostatic agent,slow acting antimicrobial agents
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