First, the growth and development of earth elements
The earth element will be able to complete a generation through egg masses, larvae, and adults. June-October is the peak of mating, spawning one week after mating. The egg mass is about 0.5cm long, and a small white earth element can be hatched after 40-60 days at 25°C-30°C.
Second, egg storage and incubation
1. Egg storage. Place in 1:1 water-containing 10%-15% wet soil and turn it once every 3-4 days.
2. Egg hatching. The room temperature should be controlled between 28-33°C, but the hatching rate is the highest at 30-31°C, and the lethal temperature of the ovary at 38°C. The hatching method of yellow argillaceous soil was mixed well and 1:1, three times a day, once in 3 days, and the eggs were sieved out with 4.5 sieves. The larvae were screened with screens and the eggs were managed separately.
Third, larvae breeding
1. Farming site selection. The breeding grounds can be indoors and in greenhouses, and they can be single or multi-layered. Single-layer raising, brick pool, height 30cm, length can be determined according to the length of the room. In order to make full use of space, multi-layer farming, asbestos tiles or prefabricated panels can be used as a barrier, the pool edge with a brick 12cm high, around the perimeter with plastic cloth to prevent pests to escape.
2. temperature. Temperature is the key to determining the growth rate of the earth element. In general, the soil element can survive at 15-35°C, but the optimum temperature for growth and development is 25-35°C, and the fastest growing temperature is 28-33°C. Under appropriate conditions, the skin was removed once every 13-18 days, and the skin was peeled off 10 times a year. The peeling time prolonged as the temperature decreased, the temperature went into a dormant state below 10°C, and the death temperature was below the O°C and above 38°C.
3. humidity. Although the soil element is not as strict as the temperature, the soil element should keep the soil moist and loose during feeding. The general larval soil moisture should be controlled at about 15%, 20% of middle-aged instars, spawning 30% (ie, holding a group, landing spread). When surface soil (about 2/3 of the soil) is dry, spray can be used to improve the spray in the morning, but attention should be paid to less frequent spraying. If the cultured soil is too wet, it is easy to get big belly disease, and if it is too dry, it is not conducive to peeling. Pond soil thickness is generally 8-15cm.
4. Stocking density. About 400,000 first instar larvae, 200,000 third instars, 70,000 fifth instars, 30,000 seven instars, and 8,000 adults per square meter should be stocked.
5. feed. Hybrid earth elements are not very strict in feed selection. Generally grasp the principle of both dry and wet phase, and coarse and fine materials with each other. The food intake of young nymphs is small and should be dominated by concentrates. After 1 year of age, appropriate amounts of coarse material should be used. After the nymph enters the gluttony period at the age of six, it should be dominated by coarse material, supplemented by concentrate material. The general ingredient should be based on grain, oil scraps, the amount of some bean cake, corn noodles and so on. Accessories with fruits and leaves, leaves and non-toxic grass can be, accessories can not exceed 30% of the main material, otherwise easy to get big belly disease. Feeding time can be carried out at dusk every day. If dry material is available, stir-frying is not allowed. The leftovers should be promptly removed on the second day of feeding to prevent mildew and insects.
6. Pest Control. The hybrid soil element has wide adaptability, strong disease resistance, and is not easy to get sick, but the pool soil is too wet to cause big belly disease. Dry soil, ventilation, and feed should be added. In case of rotten deteriorating feed, aphids can be bred, and methods of prevention and control are as follows: First, feeding residue and mildew are picked out at once; secondly, bones, leaves or oil-immersed food are immediately used for decoction; thirdly, the soil is completely changed. The breeding room strictly controls the ants. Once it is found, it is immediately mixed with miramide powder and water to form a lake. Apply a circle around the inner wall of the pool with a brush. This will prevent the entry of ants from the outside world and eliminate the ants in the pool.
Fourth, the economic benefits of hybrid soil yuan
The hybrid soil has a high yield and a large number of passages. Each adult produces one egg every 3-4 days. Each egg contains 10-20 small bugs. The spawning period is one year, and the peak period is 6-7 months. Calculated per kilogram of eggs, adult insects can be harvested 150-200kg, 30 yuan per kilogram, can be income 4500-6000 yuan, after deducting the cost of profit 3000-4000 yuan, if you continue to breed, can be a monthly income of 2-4kg eggs, one by one After hatching, it can receive 300-400kg per month.
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