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What issues should be noted when harvesting sweet potatoes?
Sweet potato is a vegetatively propagated vegetative body, with no obvious maturity standard or harvest period, but harvesting too early or too late affects the yield, seed retention, storage, processing and utilization, and crop rotation of sweet potatoes. Harvesting too early will significantly reduce the yield of sweet potatoes; harvesting too late, sweet potatoes are often affected by low-temperature chilling injury, are not resistant to storage, and the drying rate declines. Therefore, sweet potatoes must be harvested at the right time. The suitable harvest period for sweet potatoes should be determined according to climatic conditions, safe storage time, and the arrangement of the following crop. When the ground temperature is around 18°C, the weight increase of sweet potatoes is very small; when the ground temperature is
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Detailed Explanation of Key Points of Rhododendron Tissue Culture Technology
Rhododendron is an evergreen or deciduous small shrub of the genus Rhododendron in the family Ericaceae, characterized by many varieties, early flowering, rich flower colors, and a long flowering period. In recent years, due to the development of cutting propagation technology, China's rhododendron production has increased. However, precious varieties still cannot meet social demand due to few mother plants and a low propagation coefficient. Tissue culture is precisely an effective measure for achieving factory-scale seedling production of rhododendrons. A brief introduction is given below: 1. Basic technical steps of rhododendron tissue culture. In rhododendron tissue culture, the explants usually used are stem tips, stem
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Detailed Explanation of Cross-Infection and Safe Injection Issues in Pigs
(1) Sterilization of vaccination equipment. Syringes, needles and other vaccination equipment must be strictly sterilized and disinfected according to requirements. (2) One pig, one needle. Strictly guard against the one-needle-to-the-end injection method. It is best to use one pig, one needle, changing the needle for each pig injected. (3) Order of emergency vaccination. During emergency immunization, vaccination should be carried out in the order of relatively clean herds; assumed healthy herds; threatened herds; and affected herds. Within an affected herd, proceed in the order of asymptomatic; mildly symptomatic; and severely symptomatic. (4) Safe and scientific injection issues. Intramuscular injection at the side of the neck behind the ear.
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Three key issues raccoon dog breeders must currently pay attention to
Entering mid-September, raccoon dogs enter the late fattening stage, a period of transition from the growth stage to the fur maturation stage. For breeders, this period until pelting (around November 20) is the most critical time in the breeding process; the quality of management directly affects the success and profitability of the operation, and breeders must not be careless. So how can one correctly grasp this critical period of about two months to maximize breeding profits? The years of experience of successful breeders tells us that one should start from the following three aspects
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Asexual Propagation and Seedling Cultivation Method for Schisandra chinensis: A Detailed Explanation of Tissue Culture Technology
As an emerging technology and research tool, plant tissue culture is flourishing in all fields of plant science and has been widely applied in production sectors such as agriculture, forestry, horticulture, and Chinese herbal medicine, demonstrating enormous advantages. It provides large numbers of seedlings in a short time to meet production needs. As a means of asexual propagation, tissue culture can propagate 60,000 shoots from 1 apple bud in 8 months, 1 million seedlings from 1 poplar axillary bud in 1 year, and 500,000 seedlings from 1 Schisandra chinensis bud in 1 year, thus
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What issues should be noted in the export processing of fresh-keeping shiitake mushrooms?
I. Raw material selection In the processing of fresh-keeping shiitake mushrooms, the first thing to note is the freshness of the raw materials, which is an important factor determining the quality of the finished fresh-keeping shiitake mushrooms. The raw materials must be fresh, and the color must be normal; secondly, the mushroom caps must be complete and round in shape, the stems must be intact, and the mushroom bodies must retain the graceful form of natural growth; the mushroom flesh must be thick, the edges of the caps must be neatly incurred, the partial veil unbroken or slightly open, and not fully opened; the cap diameter must be no less than 38 mm; and there must be no pests or diseases, off-odors, or soil impurities. II. Raw material handling and cold storage First,
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What issues should be noted when harvesting edible mushrooms
1. Harvest at the right time. When edible mushrooms are 70-80% mature, they look beautiful and taste good. Take shiitake mushrooms (Lentinula edodes) as an example: the sign of 70-80% maturity is that the partial veil has broken, the cap has not yet fully opened and still curls inward slightly, forming a "gong rim"; the gills have fully extended and turned from white to yellowish-brown or dark brown. This is the suitable harvest period for shiitake mushrooms. 2. Pay attention to picking technique. When picking edible mushrooms, all stemmed mushrooms, such as shiitake, straw mushrooms, oyster mushrooms, and bamboo fungus (Phallus indusiatus), must be picked according to the principle of picking the large and leaving the small. When picking, pinch the base of the mushroom stem tightly with your thumb and index finger,
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Detailed Explanation of Rhododendron Tissue Culture and Cultivation Management Techniques
As a high-grade ornamental flower, rhododendron is not easy to propagate and grow in North China. This is mainly because most of the soil in North China is alkaline, while rhododendrons prefer typical acidic soil, thus making propagation and planting somewhat difficult, and they can only be grown as greenhouse flowers. Rhododendron propagation methods include seed sowing, cuttings, layering and grafting, and tissue culture. Tissue culture does not require seeds; it only needs the stem tips of the current year's branches of the rhododendron. In a very short time, a large number of small rhododendron seedlings can be cultured in test tubes, and it is not restricted by season.
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What issues should be paid attention to in the management of single-season rice and other field crops
In the past week, the weather has continued to be hot with strong sunlight, field evaporation has been very high, and some rainfed fields have already experienced water shortage and drought. In the management of single-season rice and other field crops, attention should be paid to the following issues: 1. Spraying for disease and pest control should be done in the morning and evening, and sufficient water should be used. At present, it is the suitable period for controlling the fourth (2) generation leaf roller and rice planthopper of single-season rice. When selecting appropriate pesticides for control, the spraying time should preferably be before 8 a.m. or after 5 p.m., avoiding the high-temperature and strong-sunlight period as much as possible, and sufficient water should be used
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What issues need to be considered when growing Dendrobium
What should be considered when growing Dendrobium
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