(1) stocking before the preparation of rice paddy shrimp ditch requirements before stocking a month to build. Shrimp ditch per acre should be splashed with quicklime 50 to 75 kg of water, or tea meal, water depth of 1 meter per acre of water surface with 40 to 50 kg of soaking liquid splash, thoroughly clean the pool disinfection, to be toxicity disappeared into the water. Into the water with multi-layer sieve silk screen filter, to prevent the entry of hostile organisms, water depth to maintain 0.6 ~ 0.8 meters can be. Shrimp fry stocking 7 ~ 10 days before, per mu of rotting manure 300 ~ 500 kg, used to cultivate rotifers and other natural bait for shrimp fry, shrimp species under the ditch after feeding. In the shrimp ditch transplanted good rotifer black algae or Malayan eye and other aquatic plants, or planting water spinach, aquatic plants to account for shrimp ditch area 1/2.
(2) shrimp fry, shrimp seed stocking method of paddy rice cultivation of green shrimp, shrimp fry, shrimp seed stocking there are two main methods. One is the shrimp seedling direct stocking method. Usually since late May, set up a number of small net boxes in the shrimp farming ditch, according to each mu shrimp ditch to put 0.5 ~ 1 kg of parent shrimp holding eggs calculated to hold the egg shrimp into the small net box. Through the stimulation of microfluidic water to promote shrimp egg hatching, generally after 10 to 15 days, shrimp seedlings can all hatch out, and through the net box box eye into the shrimp ditch. At this point, you can take out the hatched shrimp along with the net box, shrimp fry cultivation. This method is convenient and trouble-free, but the seedling counting is difficult, usually taken in the shallow water of the shrimp ditch to take samples, check the density of shrimp seedlings. General paddy farming commercial shrimp, the requirements of 50,000 to 60,000 tails of seedlings, if the number of shrimp seedling stocking is insufficient, should also be put in a timely manner. Secondly, special pool cultivation of shrimp seedlings, shrimp species, counting and stocking. Choose a sunny morning or evening, will cultivate good quality shrimp seedlings, shrimp species into the shrimp ditch, required to put even put well, so that shrimp seedlings, shrimp species evenly distributed. Another method is, directly to the natural waters to catch young shrimp or buy young shrimp stocking. But this method is small in number, only as a supplement.
(3) shrimp fry, shrimp stocking density shrimp fry, shrimp stocking density, with the shrimp ditch conditions, feeding management level and plan to achieve production. Usually the main shrimp, can be at the end of June to early July, per mu of shrimp ditch put 1.2 ~ 1.5 cm shrimp fry 50,000 to 60,000 tails, or put 1.5 ~ 2 cm shrimp species 30,000 to 40,000 tails. The implementation of rice paddy fish, shrimp and crab mixed culture, per mu can put specifications for 1.5 ~ 2 cm shrimp species 20,000 tails. Requirements for stocking shrimp fry, shrimp species must be robust, neat specifications, disease-free, injury-free, strong vitality, in order to improve the survival rate of stocking.
This article is derived from: China Agricultural Publishing House "Encyclopedia of Animals and Plants"