Analysis of several mainstream leech culture models at present

Article source: http://www.shuizhi315.com/

1. The environment and conditions of artificial breeding of leeches:

Leech culture does not need a strong labor force, the Yellow River and the middle and lower reaches of the Yangtze River, as long as there are sufficient water sources and can catch or buy the feed absorbed by leeches-snails and mussels, they can be cultured (except sea water). Indoor and outdoor, before and after the house, old factory buildings, barren fields, fish ponds, etc., the culture area can be large or small.

2. Culture mode and quantity:

1. Semi-artificial cage pond culture: use wasteland excavation, or low-lying old ponds and fish ponds to culture with cages with a width of Cmure D meters, unlimited length, cage height of more than A meters to prevent flooding, and a water depth of more than 80 centimeters. This culture method is convenient to collect and catch, and is widely used at present, but the mesh number of the cage is too low, the seedlings are clamped, and the mesh is too high. the excrement of field snails and leeches clogs the mesh in the process of culture, and the regulation of water quality has become the biggest problem. the yield is also high and sometimes low with the year.

2. High-density industrial soilless artificial culture of leeches: make use of the front and back of the house, the old factory building or the old cement site, the garden, the wasteland, and the convenient place close to the water source of the lake to build a soilless three-dimensional culture pond with a width of B meters-C meters, a depth of 100 centimeters, no limit in length, a large or small culture area, a sewage outlet at the bottom of the pond, and an anti-flood outlet at a height of 80 centimeters from the bottom of the pool. This farming method disrupts the original natural survival characteristics of living organisms, and whether leech seedlings can survive the high temperature is a decisive factor in this model, but the regulation of water temperature in high temperature weather in June and July is a fundamental problem. With a little common sense, the cement will be scorched in the summer above 35 degrees, and the effect of changing water for 24 hours is also a drop in the bucket. The construction investment of one mu of cement pool is 60,000, and the cost can only be recovered under the theory of stable production for four years.)

3. Leech culture in imitating ecological soil ponds: use farmland to dig culture ponds (ditches) (dishes) with a width of B ·C meters, a depth of An AB meters, and unlimited length. A wide management aisle is left between the east-west direction and the pond (ditch). The old ponds and fish ponds are repaired and cultured, and the escape prevention equipment is done, and the water depth in the pond is maintained at 50,100 centimeters. This culture method imitates the natural living habits of leeches in all aspects, and the ditch walkway is convenient for daily management and observation, so it is suitable for large-scale breeding with low input and high output. It is the most ideal way of breeding at present. )