-
How to prevent and control rice red blight? These 4 methods work fast
After good early growth, rice enters the reproductive growth stage of the middle and late periods. Strengthening field management at this stage has a great relationship with the yield and quality of rice. So, how can field management in the middle and late stages of rice growth be done well? 1. Timely field drying. Field drying should generally be carried out when rice is not sensitive to water reaction, that is, it is more suitable from the late tillering stage to the early young panicle differentiation stage. The following principles should be followed during operation: fields with sufficient and vigorous seedlings should be dried appropriately earlier; where the mud foot is deep and there is excessive growth, drying should be heavier, otherwise lighter; fields with poor water retention should not be dried heavily; saline-alkali paddy fields generally cannot be dried.
-
Many difficulties in large-scale farming of yellow catfish, polyculture models work better
The yellow catfish is a benthic omnivorous fish, with tender flesh, rich nutrition and extremely high economic value, making it a farming species with great market potential. The yellow catfish has strong adaptability and grows slower than cyprinid fish, but grows relatively fast for the species itself; fry bred in the same year can reach marketable size within that year, and the population yield is relatively high. Because large-scale artificial farming currently faces certain difficulties, carrying out polyculture has become imperative. Polyculture of yellow catfish in fish ponds has the following advantages: first, it can feed on low-value small miscellaneous fish and shrimp in the pond,
-
How to treat postpartum paralysis in pigs and sheep? This effective formula works well
1. Treating postpartum paralysis in sows. Postpartum paralysis in sows mostly occurs within 2-5 days after farrowing. In the early stage of the disease, the animal is listless, has reduced appetite, and produces less milk; body temperature is normal or slightly elevated. In mild cases, standing is difficult and the hindquarters sway; in typical cases, the animal cannot stand and lies down in a stupor. For treatment, add 4% bone meal, AD3 powder and trace element additives to the feed. Inject the sick pig intramuscularly with 3-5 milliliters of vitamin D3 colloidal calcium, 5-10 milliliters of vitamin E injection (twice daily); vitamin D3 600-1200 international units, once daily, or take an appropriate amount of quicklime, add clean water, stir and let stand. Each time the affected sow is fed, take 300-400 milliliters of the clear supernatant limewater and mix it into the feed. Generally, feeding continuously for 10 days gives a marked curative effect.
-
Key Points for Preparatory Work Before Sowing Gastrodia elata Seeds from Sexual Reproduction
The sexual reproduction of Gastrodia elata uses hybrid seedling seeds of Gastrodia elata, which reproduce under the combined action of germination fungi and Armillaria mellea. The growth period of sexually reproduced Gastrodia elata is one and a half years, that is, planted in June-July of the current year and harvested at the end of the second year. Its characteristics are small investment, high success rate, and stable yield, and it is currently a relatively advanced high-yield cultivation technique for Gastrodia elata in China. 1. Selection of planting site. The growth of Gastrodia elata hardly requires sunlight, so it can be planted in basements, air-raid shelters, mountain streams, and other places with certain ventilation conditions, as well as in all idle land such as the edges of courtyards, fields, roads, slopes, forests, and bamboo groves. In areas with relatively high temperatures such as semi-mountainous and plain areas, indoor planting is advocated. For the sexual reproduction of Gastrodia elata, river sand, hemp-bone stone sand, etc. should be used as much as possible. In places where there is really no river sand, sandy loam soil with a sand content of more than 50% should also be selected.
-
What preparation work needs to be done for artificially rearing queen bees?
Before artificial queen rearing, the following preparation work needs to be done: (1) Selecting parent colonies. Select healthy, disease-free colonies whose honey or royal jelly yield exceeds the average yield of the whole apiary, with weak swarming tendency and rapid colony development, as parent colonies. The drone colony is the colony that provides drones, and the queen mother colony is the colony that provides queens. Whether drone colony or queen mother colony, both are used to rear bee larvae. The same drone colony can also rear thousands of drones. If only one or two breeding colonies are used every year to rear virgin queens and drones, the whole apiary's colonies will undergo inbreeding, causing productivity and
-
Detailed explanation of the jujube processing workflow
1. Workflow: raw material selection → scoring → sulfur fumigation → boiling → drying → grading and packaging → finished product. 2. Key operating points. Material selection: choose fruit that is uniform in size, thin-skinned, with loose flesh and little juice, harvested at the white-ripe stage, free of pests, diseases and mechanical damage. Scoring and sulfur fumigation: first sort the raw material into several grades by size; to facilitate sugar penetration, cut fine lengthwise stripes on the surface of the jujube, 70-80 cuts per fruit, with a depth reaching half the thickness of the flesh; immediately after scoring, fumigate with sulfur, using sulfur
-
Fishery Science and Technology Collaboration Network: 100 Key Achievements in Aquatic Science and Technology
At the 2007 National Fishery Science and Technology Collaboration Network Conference that concluded today, a declaration was issued to the national fishery science and technology community on jointly advancing the "Ten Major Actions," and 100 key achievements in aquatic science and technology were introduced and released to the public. It is reported that the 100 aquatic science and technology achievements cover disciplines and fields such as resource conservation and development, aquatic species breeding, healthy aquaculture, aquatic disease prevention and control, aquatic product quality and safety, and fishery equipment and engineering. They include both national-level major achievements in high and new technology and the promotion of independent innovation, as well as those oriented to industry development needs
-
Silkworm droppings work well as rabbit feed, and rabbit farmers should give them a try
Silkworm droppings have high nutritional value, with a crude protein content of 15.4%, second only to wheat bran and higher than rice bran and green grass, making them an excellent feed for livestock and poultry. Feeding silkworm droppings to livestock and poultry often produces very good results. 1. Feeding silkworm droppings to pigs can save large amounts of concentrated feed; pigs gain weight quickly per unit of time and have a high marketable rate. After sows eat silkworm droppings, milk secretion increases. 2. Feeding silkworm droppings to sheep increases the amount of milk secreted and yields more wool; sheep wool length can reach more than 14 cm. 3. Feeding silkworm droppings to cattle can make
-
How to treat pig lice? Peach leaf decoction works well
In summer and autumn, pigs are prone to pig lice, which not only affects the pigs' calm and hygiene, but also hinders their growth and development. The method to prevent and treat pig lice is: take 1000 grams of fresh peach leaves, add 2000 milliliters of water and boil, take the cooled filtrate, wash the places on the pig's body where lice are present, and wash continuously twice, then all the pig lice can be killed, and the lice eggs will also be destroyed. If cattle have cattle lice, this method can also be used to kill them.
-
How to prevent rice field eel diseases in spring? Garlic and salt solution works well
After overwintering, rice field eels begin to become active in spring when the temperature rises. At this time, they are very susceptible to saprolegniasis, skin rot disease, bacterial septicemia and other diseases, which can lead to death. If a clarified solution made by soaking fresh garlic and high-quality salt at an 80-100 fold dilution is promptly splashed into the breeding pond, once every 3-5 days, for 2-3 consecutive applications, splashing 2-3 kg per square meter of breeding pond each time, evenly sprinkled on the water surface, the rice field eels will not be infected by the above diseases, and the breeding survival rate will be high.
条件筛选