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1. Warm incubation of egg sheaths.
The temperature was controlled at 30°C, the relative humidity was controlled at about 75%, and the eggs hatched after 35-45 days. If the temperature is between 26°C and 28°C, it takes 46-60 days to hatch. Using artificial warming in winter and spring, hatching eggs can be hatched in time. During this time, if there is warming equipment, the egg sheath can be put into the warming pit (pool) at the same time for incubation. There are two main types of equipment for heating alone: ​​one is the use of electric heat, and the other is the use of heat. Electric heating is used in areas where the power supply is normal. The method is simple and easy to adjust and control. Where there is no power, it can be heated.
In a heat receiver, only 1-2 pots (according to the number of egg sheaths) can be placed. There should be a gap between the pot (sputum) and the ovum sheath so that the pot (sputum) and the ovum sheath will not directly affect the hatching. It is advisable to place the egg sheath 1-1.5 kg in each pot. The temperature plays a decisive role in the embryonic development rate of the earthworm. Therefore, the temperature inside the heat receiver must be adjusted to the required temperature before the egg sheath can be put in. After the temperature is adjusted, the temperature can be adjusted slightly, otherwise the heat receiver can be used. It is difficult to control the temperature inside, if the temperature is too high, the egg will be heated to death. Egg temperature is controlled at about 30 °C. During the entire artificial incubation process, the temperature must be balanced and cannot be changed suddenly. Otherwise, the hatching speed will be slowed down, the hatching will be irregular and the hatching rate will be reduced. In addition, the humidity is also very important, such as the discovery of low humidity, can be sprayed with warm water at 30 °C, while paying attention to turning the egg sheath, turning 1-2 times a day, so that the egg sheath heat evenly.
Artificial warm hatching can be carried out in both winter and spring, but it is the most suitable for the beginning of February each year, which can reduce the time for warming, saving fuel and providing economic benefits. It can be hatched from the beginning of February to the end of March, and then warmed for about 1 month. After the temperature rises in May, it stops heating. And because of the small body of newly hatched nymphs, the area for heating and feeding is small and it is easy to manage. For example, incubating in November, warming and feeding after hatching will take about 3 months. The time is long, the cost is high, and the management is more troublesome. Therefore, the artificial hatching is most appropriate in early February.
2. The body is raised and maintained.
In winter and spring, the natural temperature can not meet the requirements of the growth of earthworms, artificial heating can be carried out. The warming time generally begins at room temperature below 10°C in November and ends at May. By artificially raising the eggs, eggs produced in May of that year can be bred to spawning females by April of the following year. The generation cycle is only 11 months. Females raised by warming have shorter life spans, weakened physiques, are prone to illness and even die, and are 20-30 months shorter than naturally grown females. Therefore, spawning eggs should be maintained in order to keep them naturally. The warming and quick-feeding method is mainly used to promote the growth of females that use herbs, and can further increase their yield.
The feeding room for warming breeding locusts must be closed and kept warm. Heating in the room can be divided into two types of fire pits and stoves.
The management during warming and feeding is the same as the management of natural breeding, but the temperature in the upper and lower layers of the room should be noticed. Usually the upper layer is hot and the lower layer is cooler. Therefore, when the pits are separated, the upper layer of earthworms should be transferred to the lower layer. The raising of the lower layer is adjusted to the upper layer so that the population of the earthworm is balanced and balanced. At the same time, we must dilute the warm water and add green feed.
Rapid warming of earthworm aphids
In the natural situation, the ground locusts enter the hibernation phase from mid-November to April of the following year because the temperature is lower than 10°C. At the same time, the eggs produced after September cannot be hatched until July of the following year. Therefore, it takes 2-3 to complete one generation. year. The dormant period of worms takes 1/3 of the time of a generation. If the earthworm can make dormancy, it can shorten its generation cycle and speed up its growth and reproduction. Studies have shown that it is believed that the dormancy of mantle worms is forced because of environmental conditions and the type of foodstuffs, especially changes in humidity. Using artificial control of temperature, humidity and improved conditions, the growth cycle can be shortened from 23-33 months to 11 months, to achieve the purpose of accelerating growth and reproduction.