-
Key Technical Points and Methods for Fish Polyculture Explained
In ponds where monosex tilapia and pufferfish are the main cultured species, under artificial feed feeding conditions, there are usually many freshwater shrimp, which are the best bait for the marble goby (Thai snakehead gudgeon). 50-80 marble goby fry can be stocked at the same time per mu, with a small number of artificial fish nests placed, and 20-30 kg of marble goby can be additionally harvested per mu at the same time.
-
Scarab Beetle Control Methods and Key Technical Points
Scarab beetles, commonly known as "cangchong," have one generation per year and mainly damage poplars, willows and many other plants; the larvae damage the roots, while the adults feed on the leaves. According to survey statistics from our county's forestry bureau, scarab beetle damage accounts for a very large proportion of the flower and tree pest and disease problems in our county. Control methods: 1. Manual control: taking advantage of the adults' death-feigning behavior, shake the branches in the evening and capture and kill the adults that fall to the ground. 2. Physical control: taking advantage of the adults' phototaxis, hang blacklight lamps from 7-10 in the evening to trap and kill the adults. 3. Horticultural
-
What are the technical measures for autumn fingerling rearing
Autumn water temperatures generally range between 20 and 30°C, which is a good time for fish growth. If autumn is not used promptly to rear fingerlings into plump, strong, large-sized fingerlings, then when the cold winter arrives, most fingerlings will die because of weak constitution, and the average survival rate is often less than 60%. Therefore, strengthening autumn fingerling rearing is the top priority for farmers. The specific rearing measures are: disinfect and clear the pond, then transfer to a new pond. In the original pond used for rearing fingerlings, after several months of culture in spring and summer,
-
What are the technical advantages of dense planting cultivation of potatoes in wide ridges?
China has a history of more than 400 years of potato cultivation, but what continues to this day is still the 65cm narrow-ridge potato planting method, with an average yield of 26,000 kg/hm. This planting method results in shallow hilling, insufficient soil storage capacity, tubers that are easily exposed, and an increase in deformed tubers. At the same time, because the ridge spacing is small and the plants are large, the spaces between ridges become congested, which is unfavorable for ventilation, makes humidity too high, and forms a field microclimate, making it extremely easy for the devastating disease -- potato late blight -- to occur and spread, producing large numbers of diseased tubers and even causing total crop failure.
-
What are the technical measures for rice-fish rotation?
Before stocking fish, preparatory work must be done well; first, the field ridges must be heightened and reinforced. In conjunction with planting the early rice seedlings or preparing the field, first heighten and widen the field ridges as a foundation for later heightening and widening; after the early rice is harvested and the late rice is transplanted out, promptly heighten the ridges to more than 1.5 m, with a ridge surface width of about 1.2 m. Second, a holding pond must be prepared well. The holding pond is dug at one corner of the main field, with an area of 15%-20% of the rice field. The holding pond is about 1 m deep. Finally, a drainage ditch should be opened at a convenient end of the field to prevent floodwater from rushing into the pond and causing the fish to escape with the water
-
Key Technical Points for Winter Potato Cultivation with No-Till or Minimum-Till Rice Straw Mulching
I. No-till or minimum-till field preparation. 1. Selection of no-till or minimum-till fields. No-till or minimum-till potato cultivation is best carried out in sandy loam fields with convenient drainage and irrigation, loose soil, a pH value of 5.5-6, and good water and fertilizer retention. It is especially suitable for planting in sandy loam paddy fields with good drainage and irrigation conditions during the winter fallow period in our city. Fields prone to drought and water shortage and shallow, poor fields, heavy clay fields, low-lying fields, mountain pit fields, cold waterlogged fields, and rotten
-
Prevention and Control Methods and Technical Key Points for Duck Infectious Serositis
Duck infectious serositis, also known as duck septicemia Pasteurella disease, is a chronic or acute septicemic infectious disease that affects ducklings (goslings). It is characterized by fibrinous pericarditis, perihepatitis, airsacculitis and arthritis. With the rapid development of the duck farming industry and the expansion of trade in poultry products, the incidence of duck infectious serositis has been rising year by year, and it is prone to occur and difficult to treat, having become one of the important diseases restricting the rapid development of the duck farming industry. Controlling and eliminating this disease is of great significance for promoting the rapid development of the duck farming industry. Based on my own practical work experience, I will discuss the prevention and
-
How to hatch chicks with biogas? Hatching methods and key technical points
Biogas hatching has the advantages of simple operation, safety and reliability, a high hatching rate and lower costs. Because household biogas digesters have a small capacity, this technique is extremely suitable for small-scale farmers (within 1000 birds). The relevant technical parameters are listed below for reference: 1 cubic meter of biogas can hatch 475 eggs, a biogas incubator consumes 30-40 liters of gas per hour, the hatching rate of fertilized eggs is above 90%, biogas hatching raises the hatching rate by 5%-15% compared with electric or oil hatching, and there is no worry about power outages; every 100 eggs hatched saves 3 kilograms of fuel oil
-
Prevention and Control Methods and Technical Key Points for Swine Anthrax
For acute and subacute cases in pigs, early diagnosis and timely treatment are very important. Treatment of chronic anthrax in pigs is restricted, but in all cases treatment must be carried out under strict isolation and with dedicated nursing care. 1. Serum therapy. Anti-anthrax serum is a specific biological agent for treating anthrax, and good results can be obtained when used at the early stage of the disease. The single dose for large pigs is 50-100 milliliters, and for small pigs 30-80 milliliters. Half may be given intravenously and half subcutaneously. If necessary, the injection may be repeated once after 12 hours or 24 hours. To avoid allergic reactions,
-
Detailed Explanation of Technical Measures for Preventing Broiler Chick Mortality
Broiler chicks grow and develop relatively quickly and have high nutritional requirements. During the chick stage, their body temperature regulation function is not fully developed, and their resistance to disease is weak. Therefore, they must be given careful care; the slightest negligence can lead to various diseases and death. In production, preventive measures must be taken to reduce losses. 1. Strictly follow the immunization program and vaccinate in a timely manner. Chicks raised in large groups in confinement are prone to illness with the slightest inattention, especially Marek's disease, Newcastle disease, infectious bursal disease, infectious bronchitis and other diseases. Once these infectious diseases spread, they are very
条件筛选