-
Detailed Explanation of Common Pond-Clearing Drug Types and Their Methods of Use
Drug-based pond clearing is the use of drugs to kill pathogens, parasites, and various predatory fish, wild trash fish, and other harmful organisms in the pond that endanger fish, shrimp, and crab fry, thereby preventing disease from affecting the normal growth and development of the cultured species and improving aquaculture efficiency. At present, there are many varieties of pond-clearing drugs, but different varieties have different effects. Commonly used pond-clearing drugs include quicklime, bleaching powder, tea seed cake, ammonia water, croton, Tangkening, and others. 1. Quicklime pond clearing Quicklime is calcium oxide. Its pond-clearing effect is that after quicklime meets water, a chemical reaction occurs, producing calcium hydroxide,
-
A Detailed Guide to the Main Diseases of Soft-Shelled Turtles and Their Prevention and Treatment
With the continuous development of the soft-shelled turtle farming industry, the ever-increasing density of artificial breeding, and the promotion of constant-temperature intensive farming, the factors causing turtle diseases are increasing day by day, bringing many difficulties and economic losses to specialized farming households. Below is an introduction to the causes and prevention and treatment techniques of several common diseases of soft-shelled turtles. 1. Hemorrhagic disease: Caused by viruses and Aeromonas punctata. Bleeding points or bleeding spots can be seen on the plastron of diseased turtles, and erosive growths appear on the carapace; in severe cases it can cause death. Prevention and treatment: Apply furazolidone at 1.5 g/cubic meter to the whole
-
What is going on with geese pulling white droppings, shaking their heads, coughing and having difficulty breathing?
1. Clinical symptoms: Sick geese are listless, with ruffled feathers, unwilling to move, standing apart and dazed, with reduced appetite or even complete loss of appetite, pulling white or green watery droppings, showing respiratory symptoms such as head shaking and sneezing, and neurological symptoms such as twisted necks, circling and head tilting appearing in the flock. 2. Treatment: 1. Emergency injection of avian influenza-paramyxovirus bivalent yolk antibody, 2 ml per bird. 2. Zhongmu Hudu Kuaike (100 g), two bottles per day, once in the morning and once in the evening, concentrated in drinking water, for 3 consecutive days. 3. Changganqing (100 g
-
Identification of Physiological Disorder Symptoms in Lilies and Their Prevention and Control Methods
Physiological disorders, also known as non-infectious diseases, refer to the disruption of normal physiological metabolic functions in the plant itself caused by factors other than pathogens. The causes of physiological disorders may be internal factors such as mineral element deficiency, tissue aging, or environmental factors such as temperature, light intensity, and abnormal gas composition. I. Leaf scorch: The typical symptom of leaf scorch is the formation of semicircular necrosis at the tip and margin of the leaf, sometimes also manifested as chlorosis or necrosis at the leaf margin, or yellow-green spots appearing on parts of unexpanded or expanded young leaves
-
Common Problems in Fish Ball Production and Sale and Their Solutions
I. The Significance of Fish Ball Production China ranks first in the world in total freshwater fish output and is also the world's largest freshwater fish farming country. China has uniquely advantageous resources for developing the deep-processing industry of surimi foods. In 2004, the national aquatic product output was 48.55 million tons, an increase of 3.2% over the same period in 2003. From January to November, freshwater product output was 16.69 million tons, up 5.9% year on year; marine capture product output was 12.87 million tons, up 2.1% year on year; and mariculture product output was 10.50 million
-
Feeding and Management Key Points for Large Yorkshire Sows During Their High-Production Period
1. The age structure of the sow herd must be reasonable. According to a survey of 150 litters from parities 1-10 at a certain pig breeding farm in Jining, sow production performance varies with age (parity). The Large Yorkshire sow is a fine breed with relatively stable genetic traits, a long high-production period, strong reproductive capacity, and sustained high and stable production over many years. According to a survey of 150 litters from parities 1-10 at a certain pig breeding farm in Jining, adult sows (parities 4-7) averaged 12.4 live piglets born per litter, which is 1.6 more per litter than young sows (parities 1-3)
-
Common Pests and Diseases of Goji Berry and Their Control Methods
1. Goji berry black fruit disease, also known as anthracnose. It damages fruits and leaves. ① When fruits are affected, circular irregular brown slightly sunken lesions first appear on green fruits, with small black dots arranged in concentric rings, and some lesions show orange-red sticky substance. In the later stage, diseased fruits turn black, become mummified and drop early. ② When leaves are affected, initially yellow small spots appear, later expanding into irregular lesions with reddish-brown edges, and in the later stage small black dots appear on the lesions, some of which rupture and perforate. The disease is severe in July to August when temperature is high and humidity is high. Control methods: ① During winter pruning,
-
What are the common pests and diseases of licorice (Glycyrrhiza) and their control methods?
(1) Rust: in the early stage of the disease, spray with 25% triadimefon wettable powder at 1000 times dilution or 97% dinocap at 300 times dilution for control, once every 7-10 days, for a total of 2-3 sprays. (2) Brown spot: spray once with 1:1 Bordeaux mixture before the disease occurs; in the early stage of the disease, choose 70% thiophanate-methyl wettable powder at 2000 times dilution or 75% chlorothalonil at 500 times dilution for spray control, once every 7-10 days, for a total of 2 sprays. (3) Aphids: during the occurrence period, spray-kill with 40% dimethoate emulsifiable concentrate at 1500 times dilution.
-
Common Obstacles in Garlic Cultivation and Their Prevention Methods
In agricultural areas, due to a lack of production experience in garlic cultivation, cultivation obstacle factors affecting profitability have emerged. Based on field investigation and research, a set of preventive countermeasures has been developed for reference. 1. Sowing in June-July makes germination difficult, affecting the early market release of green garlic. Under suitable temperature and humidity conditions, garlic takes root and sprouts within one week after sowing. Garlic sown in June-July germinates slowly due to unfavorable conditions such as high temperature and drought, as well as the dormancy of the cloves themselves, requiring 15-30 days. To overcome this obstacle, seed garlic treatment and post-sowing cooling and moisture conservation should be done well. The specific method is: before sowing
-
Grass Species for Cattle, Sheep, Pigs, Rabbits and Geese and Their Cultivation Techniques
1. Growing grass to feed cattle: Mexican corn, alfalfa (Medicago sativa), tall fescue (Festuca arundinacea), napier grass (Pennisetum), Sudan grass (Sorghum sudanense) and others may be chosen; succulent leafy forage grasses with a high crude fiber content should not be planted. Mexican corn is suitable for planting in areas with annual rainfall of more than 800 mm and a frost-free period of more than 180 days. When the plant height reaches 1.5 m, it can be cut once a month. The dry matter of the forage contains 9.5% crude protein, 2.6% crude fat and 27.3% crude fiber. The stems and leaves are tender, crisp and juicy, sweet in taste and highly palatable, and are also suitable for silage or for curing into hay.
条件筛选