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Things to Keep in Mind When Selecting Fish Fingerlings in Winter and Spring
1. Pay attention to whether the fingerlings are uniform. If the fingerlings in the same pond vary in size, have relatively straight belly lines, thin and elongated tails, and slender bodies, then after being placed in a fish cage for 30 minutes they will show weak, sluggish movement, and some may even show symptoms of disease. Such fish cannot be stocked into ponds, nor are they suitable for long-distance transport; you may reduce the stocking density or move them to fertilized water for rearing. If they are indeed diseased, timely treatment is also needed. 2. Pay attention to the body length of the fingerlings. Whenever seining exercise is carried out, the fingerlings jump vigorously
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Detailed Explanation of Key Management Techniques for Spring Mushrooms of the Button Mushroom (Agaricus bisporus)
After the autumn mushroom season ends, following overwintering management, the mushrooms that fruit again in spring are known as spring mushrooms. Because they have gone through the autumn fruiting period and the low-temperature winter stage, most of the nutrients in the compost have been consumed, and the compost mycelium has also been affected by low temperatures; therefore, the vitality of the spring mushroom mycelium is relatively weak, and its fruiting capacity is noticeably lower than that of autumn mushrooms. At the same time, spring temperatures change from low to high, and the number of pests and diseases in the environment gradually increases. Therefore, spring mushroom management must, according to the climatic conditions at the time, effectively regulate the three factors of temperature, moisture and air in the mushroom house, and carry out pest and disease control, etc.
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Key Management Points for Spring Button Mushrooms and Post-Harvest Handling Methods
The button mushroom (Agaricus bisporus) is currently China's largest export earner among edible fungi, with main production areas in Fujian, Shanghai, Hunan, Guangxi and other provinces. At present, it is the spring mushroom management stage, and some key management techniques for this stage are briefly introduced below: Spring mushroom management accounts for about 30% of total yield. After mid-March, as temperatures gradually rise and stabilize above 10°C, the water content of the casing soil can be gradually adjusted to sufficient levels to meet fruiting needs. When adjusting water, first spray the clear supernatant of lime water at pH 8-9; when the temperature is below 15°C, top-dressing fertilizer can be applied together with spraying. Around April
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Key Technical Points for Spring Soybean Sowing in a Year of Severe Drought in Northeast China
Current drought situation in Northeast China and technical guidance for spring soybean sowing: I. Precipitation and temperature conditions last winter and this spring. In the autumn and winter of last year, the drought in Northeast China was severe, precipitation was lower than normal, and soil moisture was insufficient. From January to October 2007, the average precipitation in Heilongjiang Province was 402 mm, 20% less than the same period in previous years. In addition, this year's widespread "dry sealing of the soil" at the onset of winter was not conducive to soil moisture conservation. Since the beginning of winter, precipitation in southern Qiqihar, most of Daqing, the Hegang area, and some counties and cities in Jiamusi has been more than 90% less than the same period in previous years; other areas have had 10% to 90% less. In January 2008, the average precipitation across Heilongjiang Province was only 0.1 mm, 97% less than the same period in previous years, with most of the Songnen Plain and the western Sanjiang Plain receiving no precipitation at all for the entire month. After entering February, precipitation in various places continued to remain low. Snow depth across Heilongjiang Province also dropped significantly. Compared with the same period in previous years, snow depth in most areas of the province was about 25 cm less. In 2008, the area of cultivated land affected by drought before sowing in Heilongjiang Province may reach 50 million mu. In addition, the continuous warm winter was extremely favorable for soybean pathogens and pest eggs to survive the winter safely, and soybean diseases and insect pests may occur more heavily this year. The spring drought situation in Inner Mongolia is similar to that in western Heilongjiang Province.
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How to grow spring-planted soybeans in Northeast China? A detailed explanation of the technical guidance
In the autumn and winter of last year, precipitation in Northeast China was lower than normal, soil moisture was insufficient, and drought was relatively severe. This spring there has been more rain and snow, temperatures began to rise rapidly in early April, and temperature and precipitation are close to normal. The Soybean Expert Steering Group of the Ministry of Agriculture, together with the National Agricultural Technology Extension Service Center, based on full investigation, proposed the following technical guidance for spring soybean planting: 1. Strictly select excellent varieties. Because of the dry climate last autumn, soybeans may not have matured normally physiologically at harvest, and mechanical threshing increased the possibility of damage to the seed embryo
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What are the key techniques for assisting ewes at lambing in spring
Every year in February-March, it is the peak season for ewes giving birth. To assist ewes at lambing, you need to master four key points: 1. Prenatal preparation. At this time the weather is turning warm but still cold, so before the ewe lambs, a lambing room must be prepared, with the temperature kept above 5°C, and disinfected with 2%-4% Lysol or 15%-20% wood ash water. The floor of the lambing room should be covered with dry grass or sand to keep it dry. At the same time, some disinfectants (such as alcohol, iodine tincture, etc.) and other tools should be properly prepared. 2. Normal delivery. When the ewe gives birth, the lamb first shows its two front
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Spring-planted rice D You 68, a variety recommended by the Ministry of Agriculture
D You 68 is a three-line hybrid mid-season rice bred by the Rice Research Institute of Sichuan Agricultural University. It was approved by the Sichuan Provincial Crop Variety Approval Committee in 1997. Its whole growth period is 4-5 days longer than that of Shanyou 63, and it belongs to the late-maturing medium indica combination. Plant height 120 cm, growth uniform, plants luxuriant, tillering ability relatively strong, high ear-bearing rate, large panicles with many grains, panicle length about 23 cm, grains per panicle 187-194, seed setting rate about 80%, 1000-grain weight 26.3-27.7 g. Wide adaptability, strong stress resistance, good color at maturity, relatively great flexibility in seedling age
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Cherry Blossom Spring Planting Methods and Key Technical Points
These past few days, the cherry blossom I grow in a pot at home had just grown a few leaves when it suddenly wilted badly. Why? Reply: This kind of problem may be caused by poor control of fertilizer and water, and it is also related to the planting season. For cherry blossoms, May to June and September are best, and sandy loam soil that does not contain brick or stone is preferable. 1. Watering: Cherry blossom roots are shallow and not tolerant of drought. During the growing period, they must not lack water, especially during the dog days of summer, otherwise they will bloom less. However, too much water and fertilizer makes waterlogging especially easy, and it also easily causes excessive vegetative growth, an untidy plant shape, and affects the overall effect, so watering should be kept at the right level.
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Early-spring mushroom fruiting tips: manage it this way for good fruiting
After the Start of Spring, temperatures gradually rise. If you carry out simple yet clever management of mushroom beds that already fruited continuously the previous autumn, you can easily prompt a season of spring mushrooms. The specific methods are as follows: 1. Loosen the compost and replenish the soil. When the temperature rises back to 10°C, loosen the compost and replenish the soil promptly. This not only helps expel waste gases from the compost, but is even more helpful for breaking apart old mycelium, promoting the growth of new mycelium, and forming strong mycelium, laying the foundation for increasing spring mushroom yields. Loosening the compost is divided into deep, medium and light loosening, and should be determined according to the actual condition of the mushroom bed compost.
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How to Prevent and Control Common Diseases in Pigs in Winter and Spring
This disease is an infectious disease of piglets caused by Salmonella. Piglets aged 1-4 months have high morbidity and mortality rates. The disease occurs in endemic or sporadic form, often in cold, changeable weather and rainy seasons. Poor environmental hygiene and reduced resistance of piglets can induce this disease. Symptoms and lesions: In the initial acute onset, it is similar to swine fever and requires comprehensive judgment combined with other examinations. The typical symptom is persistent diarrhea with a chronic course, and some piglets also show pneumonia symptoms. Lesions: Acute cases often die of shock, with purple congestion at the extremities and systemic septic
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