China Aquatic Products Channel reported,
<b>First, autumn shrimp shed seedling release process suggestions</b>
Second, the special situation during the seedling release period should be handled and responded to
1. How to prevent more aquatic insects in the water body when releasing seedlings?
Hazards: Many aquatic insects and their larvae are aggressive to newly released shrimp fry, such as individual larger dragonfly larvae, water centipedes, etc., once the seedlings are released, if there are already many aquatic insects in the water, it is difficult to deal with, affecting the survival rate of seedlings;
<b>Prevention program:</b>
A Cover the membrane in time after entering the water, leave both ends open for ventilation and cooling, if you enter the outer river or there is a reservoir, it is best to use a 60 mesh mesh bag filter or thoroughly disinfect in the reservoir;
B Bleaching powder disinfection thoroughly, the film has been covered when disinfected;
C After disinfection, the second day begins to aerate, the fourth day can be released in time, can not delay too long;
2. After the seedlings are released, the algae are multiplied in large quantities, and the water color is thick green or dark green
<b>harm:</b>
a The pH value of the water body soared, affecting the gill development of shrimp fry and affecting the survival rate of shrimp fry;
b Photosynthesis strong mass aeration, shrimp fry bubble disease, floating seedlings;
c Algae are easy to be single, aging, a large number of apoptosis, water quality is unstable, difficult to regulate, affecting the survival rate of shrimp fry.
<b>Action:</b>
1) After disinfection, the second day begins to aerate, and on the third day, use 101 (spores), 102 (photosynthetic bacteria), 1 pack/2 shed, and press;
2) When the seedlings are released, the algae have begun to multiply, and the black elves (3 kg/shed, the water body with high salinity is first dissolved with tap water, and then sprinkled to ensure dissolution) shading to inhibit algae reproduction, adjust the algal phase, and increase the algae species;
3) Use shrimp Multi-treasure fermentation liquid to stabilize water every day before and after seedling release, and a large number of live bacteria and carbon source supplementation can stabilize the water quality algal phase.
3. 1-2 days after the release of seedlings, zooplankton breed in large quantities
1) A large amount of water algae is ingested, resulting in clear water and bottoming out, affecting the dissolved oxygen of water;
2) After the zooplankton eat the water, the direct light hitting the bottom of the pond is prone to mud skin and moss, affecting the fertilizer water;
Handling Recommendations:
1) Feed one meal every morning, start with 2 or 2, and as the seedling release time increases, it will not exceed half a catty at most, so that the shrimp fry will eat zooplankton at other times;
2) Black elf 3 kg / shed, shading to reduce the transparency of water body, reduce shrimp fry stress, improve shrimp fry feeding speed;
4. How to prevent a large amount of mud skin from flooding?
Mud skin is benthic algae attached to the bottom mud, after the water clear light irradiation, benthic algae photosynthesis to produce oxygen and other bottom mud swelling, density reduction continues to float to the surface, seriously affecting the growth of water body planktonic algae, the bottom mud on the benthic algae after death and decay and then continue to sink will be bad bottom, so that the bottom odor, affecting the survival rate of shrimp fry.
Preventive measures:
1. After the seedlings are released, use 101 (Bacillus) to do water diversion, continuously decompose the water body and the organic matter at the bottom, and maintain the transparency of the water body (moderate reproduction of algae);
2. In case a large number of zooplankton breed, the water will be eaten clearly and the black elves will be used to control the transparency of the water body in time to avoid direct light hitting the bottom of the pond;
3. 201 Organic acid detoxification, increase water permeability, accelerate the decomposition of water organic matter.
<b>【Keywords】: Xiaopeng Shrimp Water body Insect </b>aquaculture