1. The equipment needed for crayfish greenhouse culture is mainly greenhouse. The way of cultivating freshwater crayfish in greenhouse is similar to that of planting vegetables in greenhouse. Both of them use eyes as heat preservation energy to maintain the temperature of the environment and water in greenhouse and ensure the normal growth of crayfish. In the cold winter, the lobster enters the hole, and the figure of this "summer star" has long since disappeared from the dining table. However, in the breeding base, tens of thousands of catties of crayfish nest in warm greenhouses for the winter. Salvage, buy and price at any time.

2. What are the conditions for the construction of the solar greenhouse for leech cultivation? The sun is a huge hot sphere, which is connected with a stable high temperature for a long time and stores great energy.

As usual, the orientation of the solar greenhouse is an east-west extension, and it should be based on the local sun orientation at noon 12. However, in practice, some people advocate that the direction facing south is east, so that the grass can be uncovered in advance in the morning to make the light shine as soon as possible, because the temperature in the greenhouse is the lowest before the sun comes out in the morning, so that the temperature in the greenhouse can be raised as soon as possible. Some people also advocate facing south to west, which has the advantage of extending the sunshine time in the afternoon and is conducive to heat storage. No matter which method is accepted, the deviation should not be higher than10.

At present, most solar greenhouses in China choose plastic film as the transparent surrounding material of lighting roof, and the thickness is usually between 0.08 ~ 0.12mm. Non-dripping film can eliminate the reflection and absorption of water droplets to light and convert it into latent heat, thus increasing the light transmittance.