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What is the difference between ordinary Gastrodia elata and "Mingtianma"? Are they two different varieties?
After harvesting Gastrodia elata, select those that are large, uniform, and have a red "parrot's beak," wash them in water, peel them, boil them (adding alum water), shape them, dry them, and then fumigate them with sulfur; in this way the color is good, and through this fine processing "Mingtianma" is made. Most of those supplied for export are called Mingtianma. Gastrodia elata and Mingtianma are the same variety; the only difference is that the processing is coarse or fine.
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Management Points for Raccoon Dog Farming in Different Periods
Because the raccoon dog tolerates coarse feed, has few diseases, is easy to manage, and has low farming costs, it is favored by many fur animal farmers. However, some farmers manage raccoon dogs in a relatively extensive way, resulting in poor fur quality and small pelts, which affects economic returns. Below is a brief introduction to the management points for raccoon dogs in each period. 1. Early stage of the pre-breeding period: the daily ration should be based on the principle of eating enough, and animal feed should not be less than 10% of the daily ration. Increase feed with a high fat content; the feed should be diverse and sufficient drinking water should be provided. Late stage of the pre-breeding period
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These respiratory diseases in chickens need to be carefully differentiated
No matter which respiratory disease occurs, it is difficult to determine from the clinical symptoms and the performance of the flock which respiratory disease is present, which brings certain difficulties to diagnosis. To help everyone make a preliminary diagnosis on site, various respiratory diseases and common frequently occurring diseases with respiratory disease symptoms are introduced as follows: Chicken chronic respiratory disease. This disease is a respiratory disease caused by Mycoplasma gallisepticum. Mycoplasma widely exists in the chicken body, and it can be said that in commercial laying hen flocks of various breeds
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How should the water layer be regulated at different growth stages of shallow-water lotus root?
The suitable water level for shallow-water lotus root is 10-20 cm, and the maximum water depth it can tolerate is 50 cm. In cultivation, the water layer must be well regulated according to the different growth stages of shallow-water lotus root. The general principle of water layer management for shallow-water lotus root is shallow at the front, deep in the middle, and shallow at the back. After planting the lotus root, when the standing leaves appear, maintain a shallow water layer of 4-7 cm to increase soil temperature and promote sprouting. As the stems and leaves grow vigorously, gradually deepen the water layer to 12-15 cm. After the terminal leaves appear, the plant begins to form lotus root, and the water layer is gradually lowered to a depth of 4-7 cm to promote lotus root formation.
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Key Technical Points for the Use of Different Chemical Control Agents on Cotton
Chemical control of cotton means using chemical regulation methods to shape cotton into an ideal plant type and create a high-photosynthetic-efficiency population. In this way, plants can grow vigorously, pest and disease occurrence can be reduced, cotton yield can be increased, and quality can also be improved. However, there are currently many chemical control agents, and correct application techniques should be adopted according to different agents to achieve better results. 1. Mepiquat chloride. At present, mepiquat chloride is widely used in cotton chemical control, and its effect is also relatively ideal. It can reduce cotton plant height, decrease the number of fruiting branches, promote the shift of photosynthesis toward reproductive growth, reduce cotton boll
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Key Techniques for Foliar Fertilization of Cotton at Different Growth Stages
1. Fertilization at the seedling stage: Foliar fertilization at the seedling stage can promote early development of cotton seedlings, help weak seedlings become strong ones, control plant height and prevent excessive vegetative growth. Generally, a mixture of 1% urea and 1%-2% superphosphate soaking filtrate is sprayed at 50-75 kg. 2. Fertilization at the bud stage: For cotton fields with normal growth, 300-500 times diluted potassium dihydrogen phosphate plus an appropriate amount of zinc fertilizer can be sprayed; the growth peak of cotton plants appears before flowering, and excessively rapid vegetative growth will cause early row closure and increase the shedding of buds and bolls in the middle and lower parts. Such cotton fields need
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Study on the Absorption Rate of Cotton to Different Doses of Mepiquat Chloride
The indeterminate growth habit of cotton and its strong plant-type plasticity determine that multiple mepiquat chloride growth-regulation treatments must be carried out during its growth period. This is especially true under the "early, dense, dwarf, film" cultivation model, where directional induction is used to shape a reasonable field structure and obtain the optimal temporal and spatial distribution of cotton bolls. This article uses large-scale spraying machinery and takes Xinluzao 23 as the subject to study the absorption rate of mepiquat chloride by cotton at different stages of growth and development as follows. 1. Selection of spraying machinery: traction power between 30 and 65 horsepower, tank volume between 1.7 and 2.2 cubic meters,
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The Effects of Different Temperatures on Pigs and Countermeasures
I. Effects of ambient temperature on pigs. 1. Effects on pig health. In a continuously high-temperature environment, the resistance of pigs is significantly reduced, the body heat balance is disrupted, body temperature rises, coma occurs, heat stroke develops, and in severe cases death results. In a low-temperature environment, in order to conserve heat, pigs constrict their peripheral blood vessels, causing local frostbite. Low temperatures cause respiratory diseases and also often lead to rheumatism, arthritis and other diseases. Low temperatures have a greater impact on piglets; according to statistics, half of the dead piglets were frozen to death or died from cold-related diseases.
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Production and Management Measures for Cut Rose in Different Seasons
(1) Winter: mainly sunny days, strong light, and a large temperature difference between day and night. A short period of extreme low temperature occurs at the end of December. In southern Jiangxi, the large temperature difference between day and night is very beneficial to the accumulation of dry matter in cut roses, and the cut roses have large heads, many petals, and bright colors. However, in winter the day-night temperature difference inside the greenhouse often reaches above 20°C, and an excessively large day-night temperature difference can cause the petal edges of many cut rose varieties to turn black and the flowers to become deformed. The minimum night temperature required for cut rose growth is above 8°C; too low a night temperature is unfavorable to cut rose growth, mainly affecting sprouting and shoot
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How Does Cotton Photosynthetic Efficiency Change Under Different Planting Methods
To further increase cotton yield, it is difficult to achieve this by merely increasing the number of plants per unit area. In production, while increasing density, it is necessary to improve the poor ventilation and light transmission in the middle and lower parts of the cotton population, and increase the light transmission rate and photosynthetic efficiency in the middle and lower parts of the cotton population. Through research on the photosynthetic efficiency and light transmission rate of cotton populations under different planting methods, this paper aims to determine a reasonable cotton population structure for a specific region, providing a basis for high-yield and high-quality cotton cultivation. I. Materials and Methods 1. Experimental Overview The experiment was conducted from 2002 to 2003
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