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How much does the base growing medium affect Gastrodia elata yield?
At present, the base growing media used for cultivating Gastrodia elata vary from place to place. In the Hanzhong area of Shaanxi, river sand is mostly used as the base growing medium, while in the Tonghua area of Jilin, humus soil is mostly used as the base growing medium. Some also use broadleaf tree sawdust mixed with sand or rice husk mixed with sand as the base growing medium. The biggest advantage of sand as a growing medium is good water permeability, but it contains very few nutrients; choosing humus soil made of semi-decomposed fallen leaves as the growing medium is better, but the black soil from the lower layer must not be mixed in. Production practice has shown that sawdust mixed with sand, rice husk mixed with sand, and semi-decomposed
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A Brief Introduction to the Effect of Mannich Base Ingredient in Killing Fish Parasites
Mannich base ingredient is a highly efficient biological insecticide extracted from the roots and leaves of the pure plant eucalyptus and made through scientific processing. More than 1000 years ago, people already knew that eucalyptus has medicinal value. Especially in rural areas of southwest China, its roots and leaves are commonly soaked into a liquid to directly kill maggots and other pests. In recent years, after in-depth research by relevant departments at home and abroad, preparations have been extracted from it, and it is recognized as a biological insecticide that is broad-spectrum, highly efficient, low-toxicity, easily degradable, residue-free, free of "three-causing" effects, and
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How to apply base fertilizer in autumn? Master these technical points
I. Benefits of applying base fertilizer in autumn The time for applying base fertilizer in autumn is generally September-October in autumn. This is because this is a growth peak of the root system, wounded roots heal easily, and the level of nutrient reserves can be increased. In addition, at this time the temperature is high, the soil temperature is suitable, which is beneficial to microbial reproduction, beneficial to the decomposition of organic fertilizer and root absorption, increases the utilization rate of fertilizer, increases stress resistance, especially cold resistance, and helps flower buds continue to differentiate and become plump. Through full decomposition in winter, organic fertilizer can meet the nutrients needed for germination, flowering, shoot growth,
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Types of Animal-Based Feed for Raccoon Dogs and Methods of Use
Animal-based feed is an important part of the raccoon dog's diet composition, and it has a great influence on the raccoon dog's health, reproduction and fur quality. The animal-based feeds used in artificial raccoon dog farming mainly include fish, meat, fish and meat offal, milk, eggs and dried animal-based feed products. (1) Fish is the main source of animal protein. Except for poisonous fish such as pufferfish, most marine fish and freshwater fish can be used as feed for raccoon dogs. In addition to containing relatively high protein, fish also contains fat, vitamin A, vitamin D and inorganic salts, etc. The digestibility is almost
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Experimental Demonstration and Application of Factory-Based Soilless Seedling Raising of Cotton in the Dongtai Area
Factory-based soilless seedling raising of cotton is a seedling revolution in the history of cotton cultivation. It breaks the decades-old cultivation system of raising seedlings in nutrient pots and transplanting them, making cotton seedling raising and transplanting a simple, rapid, time-saving, labor-saving and cost-saving cultivation method, and opening up a new path for cotton cultivation. In 2003, Dongtai City introduced factory-based soilless seedling raising and transplanting trials. In 2004 and 2005, this technology was introduced successively in Tangyang and Luegang for soilless seedling raising and large-area transplanting trials and demonstrations. The details are summarized as
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New bamboo-rice varieties successfully bred at the Meizhou research base
Recently, the author learned from the bamboo-rice research base of the Meizhou Agricultural School in Meizhou City, Guangdong Province that various experiments on drought resistance, disease resistance and ratooning ability of bamboo rice will be carried out here this year, and scientific research on new varieties such as the special bamboo rice "bamboo purple rice" will also be launched. At the same time, bamboo rice 966 and bamboo rice 989 will continue regional trials across the province. Meizhou City has also set up 6 sites in Jiaoling, Meixian, Xingning and Wuhua counties and cities, totaling 300 mu, for trial demonstration planting of bamboo-rice cultivation techniques. The agricultural school has opened a test base to conduct drought-resistance tests on bamboo rice 966 and disease-resistance tests on bamboo rice 989.
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Processing Methods and Technical Key Points for Salted Sour Carambola (Starfruit) Salt-Preserved Base
Carambola (starfruit) falls into two major types: one is crisp, sweet and refreshing, suitable for eating fresh or for processing into carambola juice, carambola in syrup canned goods, and the like. Whether eaten fresh or processed, its quality and flavor are quite good. The other type is extremely sour with an astringent taste, mostly grown in mountainous areas without any special cultivation by humans. Because of its strong sourness, this sour carambola is not suitable for fresh eating, but it can serve as a raw material for sugar-preserved processing. In order to preserve the raw material, it can first be made into a semi-finished salt-preserved base. There are two methods for making the salt-preserved base: one is the brine curing method, preparing a 5-8
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What types can dogs be divided into based on coat characteristics?
The dog's coat is an important skin derivative that protects the dog from adverse external environmental influences and maintains a constant body temperature. The form and color of the coat are important characteristics of dog breeds, and a gorgeous coat is a second life for many toy dogs. The dog's coat consists of top hair, undercoat, and decorative hair. Top hair, also called outer hair, is the main part that constitutes the dog's coat color; it is generally long and coarse, with medullated hair making up the majority, and it mainly serves to keep the dog warm. Decorative hair refers to the hair growing on the ears, tail, and lower limbs that serves a decorative function. According to coat length, dogs are generally divided into
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Detailed Explanation of Key Techniques for Straw-Based Cultivation of Lotus Root in Shallow Ponds
Straw-based cultivation of lotus root in shallow ponds gives high yields, is easy to harvest, saves water and labour, and the planting area is expanding year by year. The average yield is 4000 kg of lotus root per mu, more than 30% higher than that of ordinary shallow-pond lotus root. 1. Choosing suitable varieties. For seed lotus root, choose early-maturing varieties with thick, round rhizomes, white skin, crisp and tender flesh, sweet taste, good quality and high yield, such as 'Elian No. 4', 'Elian No. 5', 'Jinan White Lotus Root', etc. 2. Building the lotus pond 1. Site selection and material preparation: the lotus pond should be chosen in a sunny place without shade from trees, such as village-edge wasteland, abandoned house sites, disused pits and ponds, low-lying abandoned land, etc.
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Cage Culture Technology for Silver Carp and Bighead Carp Fingerlings: Using Small and Medium-sized Reservoirs as Broodstock Bases
As the main drinking water source for Beijing, Miyun Reservoir plays a decisive role in the capital's economic development and social stability. In order to scientifically convert the nutrients and aquatic organisms in the water body of Miyun Reservoir, purify the water quality, and protect this basin of "water of life" for the capital, after the cancellation of cage fish farming, the Miyun County government increased the amount of fingerlings stocked, releasing 485,000 kg, nearly ten million individuals, of silver carp, bighead carp, bream, grass carp and other fingerlings into Miyun Reservoir each year, aiming to reduce the nutrient load of the water body through fishery production. However
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