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What are the key technical points of Taishan eel farming in earthen ponds?
The Taishan earthen pond eel farming model is an extensive farming model developed by referring to the earthen pond farming model for Chinese carp. Its characteristics are: ① The ponds are large, generally more than 4 mu, up to 20-30 mu, and developed in contiguous tracts; ② The stocking density is low; ③ Water sources are insufficient, and the water is used for a whole grow-out cycle, with a water depth within 1.2 m; ④ The soil quality is good, mainly loam; ⑤ Aeration facilities are fully equipped; ⑥ The feeding method is to feed to satiation at every meal until feed remains; ⑦ The annual grow-out rate is above 90%. Taishan earthen ponds are mostly developed from land created by reclaiming land from the sea and enclosing it into fields, and the soil is mostly loam, with water retention performance.
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Technical Points for Spraying Foliar Fertilizer on Cotton to Increase the Boll Setting Rate
This year, the summer-ripening crops in Haimen City were delayed in maturity due to climate effects, and after the summer harvest there was a continuous drought until mid-July, when it rained heavily for several consecutive days. This weather pattern of drought followed by rain was very unfavorable for the survival and growth of the already delayed transplanted cotton, and the growth process was delayed by about 10 days compared with normal years. To increase the formation speed of flower buds in the late stage of cotton and improve the boll setting rate, it is recommended to strengthen fertilizer management in the late stage by means of foliar spraying. 1. Combine pest control with proper timing of fertilizer application. Not every pest control treatment requires
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Detailed Explanation of Key Technical Points for Formula Fertilization of Cotton
Cotton has an indeterminate growth habit, strong regeneration capacity, highly controllable plant architecture, and a high fertilizer demand. Generally speaking, adequate fertilizer is the foundation for high yield and quality in cotton. Sufficient phosphate fertilizer can promote vigorous growth of cotton plants, increase boll weight, and advance maturity. Potassium fertilizer is a catalyst for various enzymes in plants, and can promote photosynthesis and cellulose synthesis. The fertilization technique for cotton is the eight-character formula fertilization method of "adjust nitrogen, increase potassium, supplement phosphorus, spray boron." Specifically, the following 5 technical measures should be well implemented. 1. Attach importance to the application of farmyard manure
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How to Apply Fertilizer Skillfully to Cotton? A Explanation of Practical Technical Points
Fertilizer is the material basis for high cotton yields, and applying fertilizer according to need is the highest principle of cotton fertilization. Where conditions allow, soil testing and fertilizer recommendation should be carried out, and based on the available nutrient content of the soil and the needs for high cotton yields, the type and amount of fertilizer to apply should be determined. For most cotton fields in the north, the amount of potassium fertilizer should be increased, the amount of phosphorus fertilizer reduced, and nitrogen fertilizer mainly used for topdressing, or a formula fertilizer with "high potassium, low phosphorus, medium nitrogen" should be applied. If a compound fertilizer with equal amounts of nitrogen, phosphorus and potassium is used, the amount per mu should not exceed 25 kg, plus an additional 12.5 kg of potassium fertilizer
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Winter Management Methods and Technical Key Points for Gastrodia elata in Jilin Province
Jilin Province has a long, cold winter, during which Gastrodia elata is in a dormant state. Preventing freezing damage and rot in Gastrodia elata is the key to achieving a bumper harvest. ① Management of pit-cultivated Gastrodia elata. Pit-cultivated Gastrodia elata usually overwinters outdoors. Before the onset of winter, the soil moisture in the Gastrodia elata pit should be kept at 30%-40%, and excessively wet conditions and water accumulation should be prevented. Drainage ditches should also be dug around the Gastrodia elata pit to prevent snowmelt water from flowing into the pit. Before freezing, cover the Gastrodia elata pit with a 15 cm thick layer of leaves or weeds, then add 20-30 cm of cold-protection
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A Complete Analysis of Gastrodia Planting Methods and Technical Key Points
Gastrodia, also known as Chijian Dingfengcao, Mingtianma, etc., is the species Gastrodia elata of the orchid family. Its tuber is used as medicine, and it has the effect of calming wind and relieving spasms; it mainly treats rheumatic waist and knee pain, limb spasms, dizziness and headache, and infantile convulsions. Gastrodia is a perennial symbiotic herb; the mature plant has an underground tuber and an aboveground flower stem. It has no roots, the stem is single and upright, 100-100 cm tall, with no green leaves, only degenerated scale-like leaves that clasp the stem; the raceme is terminal, and the tuber is fleshy and enlarged, oblong. Living gastrodia prefers a cool and humid climate, with relative humidity between 70% and 90%.
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Key Technical Points for Summer Management of Gastrodia elata in Northern Shaanxi
Gastrodia elata prefers to grow in warm, moist sandy (or leaf-mold) soil and has relatively strict requirements for temperature and humidity. However, the area along the Great Wall in northern Shaanxi lies in the mid-temperate zone, where summers are hot and dry with little rain, which is unfavorable for the growth and development of Gastrodia elata. To achieve a good harvest of Gastrodia elata, the measures that should be taken in summer management are: (1) Build a shed for shade. In summer, especially at noon during the hot dog days, due to direct sunlight, the ground temperature at 20 cm below the surface (already close to the Gastrodia elata layer) reaches as high as 30-37°C. To keep the ground temperature at 20-28°C
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Oyster Mushroom Soft Rot: Control Methods and Key Technical Points
1. Culture material treatment: choose fresh cottonseed hulls or corn cobs as raw materials. Before mixing the material, it should be exposed to the sun for 2-3 days, or ultraviolet light should be used to kill some of the contaminating microorganisms in the culture material. During fermentation, strictly follow the fermentation process to ensure it is thorough, even and complete. Products such as warming fermentation agents, Lixin Junwang or Kemei Wang can be added to improve resistance to contaminating microorganisms. 2. Management during the spawn-running period: when cultivating large bags for fruiting, they should be placed in a cool, ventilated and clean location. Try not to cultivate them inside the mushroom house (shed), to avoid the growth of large amounts of contaminating microorganisms during the mycelial cultivation process, which can lead
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How to cultivate high-temperature oyster mushrooms? Detailed explanation of key technical points
Late spring and early summer is a good time to cultivate oyster mushrooms. Because high-temperature oyster mushrooms fruit during periods of high air temperature and are prone to many diseases, the planted quantity is relatively small, but their price is 2 to 3 times that of the autumn-winter period. High-temperature oyster mushroom cultivation is technically difficult and the success rate is extremely low, so how to obtain high quality and high yield is a matter of greater concern to mushroom growers. Variety selection Many mushroom growers fail in cultivating high-temperature oyster mushrooms, mostly due to mistakes in variety selection. Some growers do not clarify the temperature type of the variety and plant casually, resulting in no fruiting or failure of mycelial growth because the temperature type is wrong, so it is essential to obtain spawn from
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Raccoon Dog Feed Processing Methods and Technical Key Points
Raccoon dog feed includes animal-based feed, plant-based feed and supplemental feed. The supply and composition of feed have a great influence on the health, reproduction and fur quality of raccoon dogs. To practice scientific raccoon dog farming, one must understand the effects of feed nutrients on raccoon dogs, so as to reasonably and correctly formulate and process feed, and obtain the best economic benefits with the least feed consumption. Therefore, the processing and preparation of feed is very important. (1) Processing of fish and meat feed Fresh marine mixed fish, meat, liver, kidney, heart and fresh blood of healthy animals, etc., remove large pieces of fat, fully wash away soil and impurities, then mince and feed raw. Fish and meat feed of poorer quality but still usable must first be fully washed with clean water, then soaked and disinfected in a 0.05% potassium permanganate solution for 5-10 minutes, and washed again with clean water before being minced and fed. Severely spoiled fish and meat are prohibited from being processed and used. The intestines, spleen, lungs and other offal of freshwater fish and poultry must be fed cooked. Cysticercus-infected pork (measly pork) can be processed and used after high-pressure steaming or thorough cooking and removal of fat. Fish meal and meat-and-bone meal should be soaked for 3-4 hours, with water changed 2-3 times, to remove excess salt before being mixed with other feed and fed. Blood meal and liver residue meal should be steamed and cooked before use. Silkworm pupae should be fully soaked, de-alkalized, then steamed, cooked and minced before use.
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