Construction scheme of greenhouse for locust breeding

Locusts are agricultural pests that like to eat agricultural products such as wheat, corn, rice, all kinds of leaves and so on. The plague of locusts can bring devastating disasters to agricultural products. Although locusts are pests, they are rich in nutritional value, whether edible or medicinal. Let's talk about the breeding techniques of locusts.

Construction scheme of greenhouse for locust breeding

Locust breeding greenhouses are generally built in a ventilated and sunny place and are about ten centimeters above the ground to help drain water. The simplest construction method of locust culture is to use two thick films with columns in the middle, which is relatively simple, low cost and convenient to cover with plastic sheeting. If conditions permit, vegetable greenhouse culture greenhouse can also be used. The cost of this kind of greenhouse is relatively high, but the warm performance is very good, which can effectively prevent locusts from freezing to death.

The soil in the locust breeding greenhouse should be sandy loam, which is not easy to caking, which can help to pick up locust eggs. In the locust breeding greenhouse, you can plant some wheat or corn to eat with locusts. Zippers should be installed outside the breeding shed to prevent locusts from escaping.

Construction and materials of locust shed

The general economic materials for raising locusts to build sheds are sticks, gauze, bamboo poles, bamboo slices and so on. We can also make use of waste vegetable greenhouses and idle houses, and suggest to build arched sheds, which have strong wind resistance and simple structure, and the scale of the shed can be adjusted to local conditions. the shed is generally no more than 15 meters long, no more than 6 meters wide and 2 meters high. in order to feed forage, clear the shed, catch locusts and so on. During construction, the arch is made of two bamboo slices at an interval of 1 meter and extended in turn, connected with wooden sticks, bamboo poles and other materials to form a frame, and a shed like a mosquito net is made with cold cloth, which is hung on the scaffolding, the bottom is buried in the ground, leaving the door with zippers, adhesive tape, etc., this device is to prevent locusts from running out and to facilitate feeding and management in the shed.

Management of locust culture

The starting development temperature of locusts is 15 ℃, the highest development temperature is 40 ℃, the suitable development temperature is 25 ℃-32 ℃, the relative humidity of air is 85%-92%, and the soil moisture is 15%-18%. Less than 14 ℃ or more than 40 ℃, locusts stop eating and die. When the temperature is 28 ℃ ~ 30 ℃, the locust eggs hatch. First prepare non-toxic soil and mix well with sawdust at 1:2 with a water content of 20% to 30%. Spread 3 centimeters of soil in utensils, spread locust eggs on the soil, and cover 1 centimeter of mixed soil. The cover film of utensils should be checked every half day. After finding the small locusts, use a soft brush to put them on the food in the shed.

The incubation was completed in 10 to 15 days. Small locusts like to eat fresh and tender wheat seedlings, corn seedlings, weeds and other monocotyledonous plants, the food intake is very small. 1-3-year-old locusts should pay attention to rain protection. At the age of 27 ~ 35 days, it is an adult. During this period, the skin was molted once every 5 to 7 days, for a total of 5 times. Each locust lays 70 eggs and 100 eggs. Locusts like to live in groups and migrate. Locusts live in groups and migrate to feed and reproduce eggs. Therefore, locusts should be given appropriate artificial interference from Eclosion to before spawning to make them migrate in the shed, so as to improve the quantity and quality of oviposition. The eggs laid should be covered with wheat bran, weeds and other heat preservation and moisturizing before freezing. Adult locusts should be sold in time if they are not used for planting. New farmers can buy seed locusts or eggs from farms (households). Locusts belong to special breeding, if there is no order and reliable market, breeding must be cautious.

Benefit analysis of breeding locusts

For the first time, it costs about 1200 yuan (including 1000 yuan for introduction and 200 yuan for building a shed). According to the lowest hatching rate of 90%, 9000 adults can be obtained, half of each female and half of both sexes. Each female can lay 40 eggs, and 180000 adults can be obtained. Plus 4500 males, a total of 184500, about one jin per 300, a total of 615 jin, according to a conservative evaluation of 8 yuan per jin, can get 4920 yuan Minus the introduction and construction cost of 1200 yuan, the income can be 3720 yuan, and then subtract the later expansion cost of about 500 yuan, forage grass 200 yuan (mowing grass in the field, almost no cost), the net income of raising locusts can be more than 3000 yuan.

Control methods of locusts

1. When there is a large amount of chemical control, 2.5% trichlorfon powder, 3. 5% trichlorfon powder and 4% dimethoate powder can be used for ultra-low dose spraying, such as 50% malathion emulsion, 40% dimethoate emulsion, 80% dichlorvos EC and so on.

2. 100 parts of wheat bran (rice bran), 100 parts of water, 2 parts of 1.5% trichlorfon powder (or 0.15 parts of 40% dimethoate EC, etc.) were mixed well for poison bait control. It can also be mixed with 100 parts of fresh grass and 30 parts of water, the dosage is 112. 5kg/hm . Use it whenever you want, don't leave it overnight. Do not use when it is overcast, rainy, windy and the temperature is too high or too low.

3. Manual capture can be combined with cultivation management. When a small amount occurs, it can be caught by a trap net to reduce the damage and reduce the number of insect sources.

As mentioned above, although locusts are pests, they can also bring good economic benefits to people. Many people especially like to eat locusts, cooking methods are also various, there is also a lot of room for the use of medicine. Breeding locusts is a relatively good project, at least the profits and prospects are very objective.