CATDOLL : CATDOLL: What to do if there are flies in the greenhouse lettuce planting

1. What to do if there are flies when growing lettuce in a greenhouse

If there are flies in the greenhouse, you can spray insecticides to kill fly maggots and prevent fly breeding. You can use 3000 times of 10% cypermethrin or 2000 times of 1.8% avermectin, which has a better effect.

2. What to do if there are white worms like maggots on the roots of cucumbers in greenhouses in winter

Use pesticides to kill insects

3. There are vegetable seedlings planted in the greenhouse, and chicken manure with maggots is sprinkled on it. Can the maggots eat the vegetable seedlings?

If chicken manure with maggots is used for greenhouse vegetables, it is very likely to cause pests and lead to reduced production.

4. Can wild flies be kept?

Can,

The formula for feeding flies is:

5 kg warm water, add 1 kg brown sugar, 30 g milk powder. Add 10 g of "ovulation hormone" every three days. Mix thoroughly and feed. Put a sponge in the plastic tray and pour the sugar water on the sponge. The time for feeding flies is 8-9 o'clock in the morning every day. The sponge in the feeding tray needs to be cleaned every two days.

Production steps:

Select a site → Build a breeding house → Ferment manure → Introduce or domesticate flies →

Circular production.

Steps:

Fermented manure → sent to maggot room → piled into strips → placed on egg collecting material → after egg laying

Cover the egg mass → retain water and heat to breed maggots → automatically separate → collect adult maggots → comprehensive utilization → shovel out

Residual manure → repeated production

Fly pupae and maggots contain high protein, which can be used as feed, and animal protein can also be extracted for medicinal purposes. Flies themselves are high in protein, rich in trace elements and vitamins. They are low in fat, cholesterol and calories, and are an excellent food supplement, recuperation and weight loss product.

Fly maggots are excellent animal protein feed. The crude protein content of fly maggots is similar to or slightly higher than that of fresh fish, fish meal and silkworm pupa meal. The nutritional composition of fly maggots is very comprehensive, containing a variety of amino acids required by animals. The content of each amino acid is higher than that of fish meal. The total amount of essential amino acids is 2.3 times that of fish meal, the methionine content is 2.7 times that of fish meal, and the lysine content is 2.6 times that of fish meal. The total amount of essential amino acids in fly maggot raw material and dry powder is 44.09% and 43.83% respectively, both exceeding the reference value of 40% proposed by the Food and Agriculture Organization/World Health Organization (FAO/WHO). The total amount of essential amino acids/total amount of non-essential amino acids (E/N) is 0.79 and 0.73 respectively, both exceeding the reference value of 0.6 proposed by FAO/WHO. Feeding experiments have confirmed that housefly larvae can be used as fresh bait for poultry, livestock and fish, for the larval stages of poultry, livestock and fish (such as young fish, chicks, etc.) and animals that like to eat active bait (such as bullfrogs, ornamental birds, etc.), and can also be used as animal protein feed to replace fish meal. High deep processing value ① Fly maggots are rich in protein, so protein can be extracted from fly maggots for use in the food industry, fermentation industry, rubber industry, etc.; ② The amino acid composition of fly maggots is relatively reasonable, so they can be used to prepare hydrolyzed protein and amino acids. Amino acids can be used as medicines to treat some diseases caused by amino acid deficiency. They can also be processed into health foods or food enhancers, and can also be used to make cosmetics. ③ Maggots can be directly processed into protein active powder. Maggot protein active powder has the effects of anti-fatigue, anti-radiation, anti-aging, liver protection, and immunity enhancement, and is an ideal health product. ④ Chitin can be extracted from the epidermis and pupa shells of maggots. Chitin is a natural bioactive substance containing amino polysaccharides. It is widely used in many high-tech fields such as industry, medicine, food, daily chemicals, national defense, environmental protection, and agriculture. Its development and utilization has been increasingly valued by the scientific, medical, and business communities at home and abroad. ⑤ Maggots can be used to develop new medicines. Houseflies have unique immune functions. They contain a "antibacterial active protein" with strong bactericidal effects. This active protein is only one ten-thousandth of a concentration enough to kill invading bacteria. At the same time, their hemolymph contains lectins with anti-cancer effects. Furthermore, the body of fly maggots also contains a kind of alkalinity bacteria, which can inhibit various pathogens of skin abscesses and promote the formation of epidermis and the healing of sores. In addition, the body of houseflies also contains 2% to 4% phospholipids, which have the functions of protecting cell membranes, lowering blood lipids, and preventing and treating cardiovascular diseases. Therefore, fly maggots have broad prospects in the development of medicines.

No, because wild flies carry a large number of bacteria and viruses.

In the 1950s, Chinese researchers selected wild houseflies and domesticated and raised them in a closed environment, making houseflies a species that can be bred. Generally speaking, milk powder and red sugar are the best feed for artificially breeding houseflies.

The use of plastic greenhouses to raise flies can easily meet these characteristic requirements of flies during reproduction, and its advantages are as follows:

1. The feeding temperature is significantly increased. There is no need to set up special heating facilities. In spring, summer and autumn, the temperature in the shed can be easily maintained at 27-30℃. By rolling up and covering the straw curtains on the roof, the temperature increase and decrease measures are simple and easy, and the feeding cost is almost not increased. Even in the cold winter, the temperature in the shed can reach an average of about 20℃.

2. Stable humidity is easy to maintain. In ordinary houses, flies need to be kept watered to maintain a certain humidity. In plastic greenhouses, due to good airtightness, there is no need to water or adjust the humidity on the ground without cement hardening. 3. Sufficient light. In plastic greenhouses, open the straw curtains on the roof, and the sunlight filtered by the plastic film will illuminate the entire greenhouse, making it easy to maintain light.

The area of ​​the greenhouse can be determined according to the size of the breeding. There are two ways to raise flies in a plastic greenhouse: one is to set up a three-dimensional gauze in the greenhouse and raise flies in the net; the other is to raise flies in the greenhouse, stack a certain amount of straw and straw rope in the greenhouse, and regard each greenhouse as a cage. This method requires more investment than the previous method, occupies a large area, and has a low breeding density. The breeding method of setting up a gauze in the greenhouse generally builds a plastic greenhouse with a length of 20 meters, a width of 4 meters, a low wall height of 2 meters, and a high wall height of 3 meters, and a gauze with 3 layers.

How to raise adult flies: Cage: The cage is 50×50×50 cm in size, with a gauze net of the same size on it. At the center of one end of the gauze net is a cloth sleeve with a diameter of about 20 cm and a length of 33 cm, which is convenient for taking flies and changing food. The feeding dish (7-9 cm in diameter) is filled with sugar for adult flies to eat, or a piece of foam plastic soaked with water is placed in it to provide water for adult flies, and it can also be used to lure eggs. 8,000 to 10,000 adult flies are raised in each cage. Whether it is the newly collected adult fly species or the adult flies that have emerged, sugar and water must be provided in time to prevent starvation and death. Adult flies lay eggs 3 to 5 times in their lifetime, up to 10 times, and each time they lay 100 to 150 to 300 eggs. Larvae rearing method: First place the feed in the rearing box with a thickness of no more than 4 cm. Then use a worm shovel to slowly place the trapped fly eggs (one-day-old larvae) on the feed in the rearing box. The young maggots will slowly disperse and drill into the feed. When the larvae eat the feed, they generally eat from top to bottom. If the humidity or temperature in the box is high, or the feed is insufficient, or the insect density is too high, the young maggots will crawl out. The breeder should check at any time and take timely measures such as adding feed or lowering the temperature or humidity.

Yes, flies are high in protein and can be used as feed. I remember someone in the south was famous for eating flies. Her flies were sterilized at high temperature and were very clean. She even ate them in front of the camera.