-
How to prevent swine influenza in winter and spring?
Swine influenza (swine flu for short) is an acute, highly contagious respiratory infectious disease caused by a virus. The disease has a sudden onset and spreads rapidly, with a morbidity rate in pig herds as high as 100% and a low mortality rate. The disease is a zoonotic infectious disease. During an outbreak, the spread of the virus should be avoided as much as possible, and attention should be paid to protecting both keepers and veterinarians. (1) Epidemiological characteristics: Swine influenza occurs mostly in late autumn, severe winter and early spring. Diseased pigs, latently infected pigs and chronic virus-carrying pigs are the sources of infection. The virus persists
-
Key Points for Winter and Spring Management and Stimulation Techniques of Shiitake Mushrooms
Winter and spring management of shiitake mushrooms is the management of the fruiting period, which determines the level of economic benefit. The fruiting period is a transitional stage from mycelial development to fruiting body development. When management shifts from the spawn-running room to the fruiting period, the mycelium must reach physiological maturity. The standards for maturity are: first, a slight trembling sensation when holding the mushroom bag in the hand; second, the amount of wart-like growths accounts for 3/4 of the bag surface area and they become soft and elastic; third, pigment secretion covers 2/3-1/2 of the bag surface; fourth, the cultivation time must be 60-70 days, with an effective accumulated temperature of 1200°C. At the
-
What are the key points for winter cultivation of shiitake mushrooms? A must-read for growers
Shiitake mushrooms are crisp and tender in texture, delicious in taste, rich in nutrients, and highly profitable. Among mushroom farmers there is a saying: "Plant shiitake on one mu of idle land, and become a ten-thousand-yuan household that same year." The key points of winter management are briefly introduced as follows: The climate characteristics of late autumn and early winter are low temperatures, large temperature differences between day and night, and humidity that is easy to control. Under normal circumstances, the mycelium grows slowly, fewer mushrooms emerge, and the fruiting bodies also grow slowly. Under such conditions, keeping the mushroom bed warm and preventing the intrusion of cold wind are key factors among the many growth factors, so attention should be paid to weather changes, and coverage and
-
Detailed Explanation of the Key Technical Points for Jujube-Grain Intercropping
The key technique of jujube-grain intercropping is to properly regulate the conflicts between jujube trees and intercrops over fertilizer, water, and light, so as to achieve mutual benefit and reciprocity between jujube and grain and realize a double bumper harvest of both. 1. Master an appropriate planting density. Row spacing has a marked effect on air temperature, humidity, light, and wind speed, and is also an important factor affecting jujube and grain yields. Therefore, overall arrangements should be made according to cultivation purposes and local conditions. For jujube-oriented planting, a row spacing of 6 m is best; for grain-oriented planting, a row spacing of 15 m is best; for giving consideration to both jujube and grain, a row spacing of 8 m is best. 2. Select
-
What are the key management techniques for pear orchards in autumn and winter?
Autumn and winter are an important period when pear trees shed their leaves and go dormant. Strengthening field management of pear orchards in autumn and winter benefits pear tree growth and flowering and fruiting the following year. 1. Reasonable fertilization: before the end of November, apply one deep autumn fertilization to the pear orchard. The amount applied should account for more than 30% of the total annual fertilization, mainly organic fertilizers such as decomposed oil cake (rapeseed cake) fertilizer, residue fertilizer, compost, and human, livestock and poultry manure. The method is: at the drip line of the canopy of mature pear trees, dig 1-2 ring-shaped fertilization trenches about 60 cm long and 25 cm deep and 25 cm wide. Per tree
-
Red-leaf winter peach is a rare premium variety among late-maturing peaches.
In the northern Henan region of Henan, red-leaf winter peach shows pink buds on March 25, begins flowering on April 1, with pink flowers, 5 petals, a flower diameter of 3.5-4 cm, and a flowering period of 7-10 days. Flowers and leaves grow simultaneously; the pink peach blossoms and purplish-red peach leaves form the only red scenic line worth viewing in spring. As the seasons and temperatures change, the purplish-red peach leaves gradually turn copper-green from the base upward, but the new shoots and new leaves at the top remain purplish-red, forming on the same branch lower leaves that are copper-green
-
Introduction to the Characteristics and Cultivation Techniques of the Jinnan Winter Celery Variety
Variety source: Also known as Jinnan Solid Celery No. 2, it was developed through line selection by the Agricultural Science Station of Shuanggang Township, Jinnan District, Tianjin, and the Hongcheng Celery Research Institute from the progeny of a cross between Jinnan Solid Celery and American Celery. It passed the Tianjin crop variety certification in 1995. Characteristics: This variety belongs to the yellow-green type, with pinnate compound leaves, relatively large leaflets, green color, and relatively large leaf serrations. The root system is well developed and the growth rate is fast. The single plant weight is 0.6 kg, and the plant height is about 90 cm. The petiole is 60 cm long, yellow-green, solid, semicircular in cross-section, relatively smooth, and the quality is fresh
-
What are the key technical points for winter rearing of broodstock?
Broodstock rearing is divided into stages such as post-spawning care, autumn rearing, winter rearing and spring rearing. Because winter temperatures are low, broodstock activity decreases, their feeding ability is weaker and they are prone to fish diseases; if management is poor, it will have a great impact on the next year's artificial hatching, fry and fingerling production, market-size fish farming and other production stages. The key technical points for doing a good job of winter broodstock rearing are: 1. Pond selection. Broodstock ponds require an adequate water source, a flat pond bottom, shelter from wind and exposure to sun, and good water and heat retention, with an area of 10-15 mu being suitable.
-
How to prevent osteomalacia in pregnant sheep in winter
Right now, dairy goats have entered the period of carrying fetuses through the winter. Over the years, many farmers have lacked knowledge of ewe reproductive health care and have not yet recognized the importance of doing a good job preventing and treating osteomalacia in pregnant sheep to ensure safe birth, which has led to difficult births and postpartum paralysis. Therefore, osteomalacia in pregnant sheep should be prevented in winter. Osteomalacia in pregnant sheep is caused by a deficiency of vitamin D and calcium and phosphorus in the body. Pregnant sheep not only need nutrition for themselves but also must supply material for the growth and development of the fetus, so the feed for pregnant sheep must be especially nutritious. But dairy go
-
Master the key technical points of winter goose fattening, get good returns by marketing before the Spring Festival
Good returns from marketing winter geese before the Spring Festival; key technical points of winter goose fattening
条件筛选