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Pollution-Free Control Methods and Technical Key Points for Edible Mushroom Diseases
In the process of edible mushroom production, as long as management is carried out according to the biological characteristics of the selected mushroom strain, physiological diseases will not occur. When infectious diseases occur, pesticides must be applied in accordance with pollution-free requirements, with prevention as the priority, and never use pesticides casually. Long-stemmed mushrooms and unopened caps are typical symptoms of oxygen deficiency, especially when semi-underground mushroom sheds are used for cultivation. This phenomenon occurs commonly, severely reducing mushroom quality and affecting production efficiency. Solution: strengthen ventilation management. In low-temperature seasons, open the ventilation openings and door between 10 AM and 2 PM.
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How to cultivate Pleurotus citrinopileatus for high yield? Detailed explanation of key technical points
Pleurotus citrinopileatus is a wild species domesticated in recent years, and has not yet formed large-scale production, with only occasional small amounts appearing on the market. Basic formula for substrate preparation: 250 kg cottonseed hulls, 5 kg superphosphate, 4 kg gypsum powder, 1 kg urea, 1 bag of edible mushroom three-dimensional nutrient essence (mixing bag). Key points to note: when mixing ingredients, according to your own technical level, increase the moisture content of the substrate as much as possible; after spawning, keep the mushroom shed temperature at 20°C~25°C. For mushroom shed treatment, continuously spray 2 rounds of Baibingquwuzong, with a 2-day interval, using one bag per 20 sq m
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Detailed Explanation of Arrowhead Seed Retention Methods and Technical Key Points
Before collecting seeds, a seed retention field must be selected. Choose a high-yielding field plot with pure varieties, robust growth, light pests and diseases, and few bolting and flowering plants for seed retention, and harvest when the aboveground parts have completely withered. After harvesting, select corms that conform to the characteristics of this variety, are relatively large, heavy, and have relatively curved terminal buds as seeds. Curved terminal buds are conducive to nutrient accumulation and are not easy to sprout. The selected seed corms should have their terminal buds broken off, with a small part of the upper corm attached. That is, pour the arrowhead terminal buds into a 600-fold solution of 50% carbendazim and soak for 20-25 minutes, then remove
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Dawn Redwood (Metasequoia glyptostroboides) Cutting Propagation Methods and Key Technical Points
Dawn redwood propagation by cuttings: from late March to early April, take cuttings and insert them immediately. Cut cuttings from 1- to 2-year-old seedling stock plants or from new shoots sprouted in the current year. Treat the lower end of the cuttings with naphthaleneacetic acid at a concentration of 0.5 per 10,000 (0.005%), soaking for 20 to 24 hours to promote rooting and improve survival. Insert about 120 cuttings per sq m. After insertion, keep the seedbed moist. New roots sprout in about 40 days; apply diluted human urine and manure once every 10 days, for 3 to 5 consecutive applications. In June, nitrogen fertilizer may be applied in small amounts several times, at 3 to 4 kg of urea per mu, diluted with water and poured on. In early August, apply phosphorus and potassium fertilizer once; per mu use
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Management methods and technical key points after rhododendrons bloom
Pruning and shaping: after rhododendrons finish blooming, the spent flowers generally need to be removed by hand, followed by appropriate thinning of branches, cutting away overly dense branches, and letting them send out new growth. Fertilizer and water management: in northern regions, water is on the alkaline side and relatively hard, and watering plants with it over the long term can easily cause soil alkalization, affecting flower growth. Therefore, before watering, the water should be stored in a container for more than 24 hours and used after the chlorine has evaporated. Alternatively, water mixed with an appropriate amount of ferrous sulfate or edible white vinegar can be applied about once every 10 days. Rhododendrons do not need much fertilizer, and it is generally applied along with watering. You can
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Detailed Explanation of Silkworm Disease Prevention and Control Methods and Technical Points
Silkworm diseases originally occurred mainly as midgut-type nuclear polyhedrosis and empty-headed flacherie, but at present, due to differences in rearing time and climatic conditions, silkworm diseases such as blood-type nuclear polyhedrosis and muscardine are predominant. 1. Blood-type nuclear polyhedrosis (commonly known as climbing silkworm, granny silkworm). The virus of blood-type nuclear polyhedrosis parasitizes in the blood of diseased silkworms. The blood of healthy silkworms is colorless and transparent, while the blood of diseased silkworms is milky white, so diseased silkworms are also called granny silkworms. Once a silkworm develops the disease, as the condition worsens, the diseased silkworm drags milky white purulent fluid and crawls frantically, so
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Snake Feeding Methods and Technical Key Points
1. Feeding of young snakes. The period from hatching from the egg or birth from the mother to before emerging from the first hibernation is the young snake stage. Young snakes aged 1 to 3 days generally do not need to be fed bait, as they obtain nutrition by absorbing the yolk of the egg sac. Young snakes enter the feeding-start period from 4 days of age. For the first baiting, since the snakes are not strong in activity and have poor ability to eat actively, artificial induction of feeding may be adopted, that is, placing young snake bait such as young mice, small loaches, small eels and other small animals with small volume but a certain degree of activity in the activity area of the young snakes to induce them to prey. For the weak ones that cannot actively
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Breeding Methods and Technical Key Points for White Raccoon Dogs
I. White Raccoon Dogs and Their CharacteristicsRaccoon dogs in nature have always been dark brown; this common ordinary color type is genetically known as the wild type. In 1974, the Harbin Zoo in Heilongjiang Province acquired a rare male white raccoon dog (eyes and muzzle both pale pink). In 1980, among domesticated raccoon dog populations in the three northeastern provinces, white raccoon dogs or piebald raccoon dogs with yellow-brown or pale blue eyes and black muzzles were successively discovered. These special color types differing from the wild-type coat color are called mutant types. The Institute of Special Animal and Plant Sciences of the Chinese Academy of Agricultural Sciences
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Rearing Methods and Technical Key Points for Male Silkworm Larvae
I. New Hybrid Male Silkworm Varieties (I) Variety Traits. The new autumn-rearing male silkworm variety bred by the Sericulture Research Institute of the Zhejiang Academy of Agricultural Sciences - Qiuhua x Ping 30, has the advantages of a strong constitution, uniform molting and rising at each instar, and being easy to rear. The number of ants per gram is around 2310, the 5th instar takes 6 days and 18 hours, the whole larval stage takes 22 and a half days, the two-day hatching rate is 49.34%, the silk length is around 1240 m, the cocoon shape is oval, large and uniform, the cocoon color is pure white, and the cocoon shell rate and silk yield are high. (II) Key Points of Rearing Technology. For ant reception and light exposure, this can appropriately be done earlier than for common varieties.
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Key Technical Points and Detailed Process for Processing Seedless Candied Jujubes
(1) Ingredients: 50 kg dried red jujubes, 30 kg soft white sugar, 100 g citric acid. (2) Operating points: 1. Select milky-white stage jujubes that are large, have small pits, thick flesh, and thin skin, and sort them into 3 grades - large, medium, and small - for processing separately. 2. Sharpen one end of a 6-8 mm diameter iron tube, pierce it in from one end of the jujube, and when pulling it out, bring the jujube pit out with it. With continuous operation, the pits are then constantly pushed out from the other end of the iron tube. 3. Soak the pitted jujubes in clean water for 12 hours, until all the wrinkles have expanded. 4. Put 25 kg water into a pot
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