First of all, we must strengthen the autumn feeding management. Because the genus is a variable temperature animal, each year from late autumn to early spring is the period of hibernation, such as lack of food in the autumn, nutrition can not keep up, often lead to death due to stagnation after the spring. He likes to eat small animals and ignores the static things. Therefore, in October of each year, bean dregs, pigs and sheep's blood should be mixed together and put into containers for natural fermentation, which will induce fly spawning. After 5 to 6 days, the mites will be hatched in large numbers and climb out of the vessels. Ren Wei eats himself. At the same time, a few lanterns can be turned on at night in the breeding farms to attract insects to gather and feed from the earthworms to supplement the food and make them strong before winter.
Second, winter protection must be carried out. Before and after November each year, the water temperature is around 10~12°C, and the worms enter the hibernation period. They do not eat or drink, and their actions are slow. At this time, the crickets that had originally been active in the drylands had to go into the water for the winter. Before the winter is over, a few ditches should be excavated in the middle of the farm or in the surrounding area. The total area of ​​the ditch accounts for 10% to 20% of the site area, and the depth of the ditch is 30 to 100 cm. The north should be deeper. Stocking 10 to 30 eggs per square meter of water. Indoor overwintering should prevent overheating of the room temperature, resulting in lack of hibernation in order to keep the water temperature around 1~8°C. Such as plastic film greenhouse winter. Keep the shed temperature at 1~10°C during winter. Should prevent the sunny weather in the noon shed temperature is too high, pay attention to timely ventilation.
In addition, before entering the water, it should be sterilized and sprayed with 1/10000 of the bleach solution before entering the water in winter to prevent germs from invading. It is also necessary to prevent the pool from leaking, and to prevent the water rat and the otters from eating food.
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