CN105284693A - Bait-casting method for mixed aquaculture of fish and shrimps - Google Patents
Bait-casting method for mixed aquaculture of fish and shrimps Download PDFInfo
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Abstract
Provided is a bait-casting method for mixed aquaculture of fish and shrimps. A pond is arranged and matched with aquatic water. Fish and shrimp seedlings and baits are thrown into the pond. The bait-casting method is characterized by comprising following steps: feeding three meals every day, attracting a large part of fish to an automatic bait feeder for ingestion 15 minutes in advance before feeding shrimp feed and then scattering shrimp feed around, wherein stop of feeding 1-2 meals is allowed every 7 to 10 days; casting baits by timing and forbidding to postpone bait-casting time even though the requirement for decreasing baits based on any reason; and uniformly scattering baits and forbidding accumulation, stopping to feed with shrimp feed for 1-2 days if any fish school ingests shrimp feed, starting to feed shrimp feed till fish schools return to the bait feeder and eats so that loss of shrimp feed is decreased and the utilization rate of feed is increased. Considerable economic benefit can be obtained during aquaculture of fish and shrimps.
Description
Technical field
the invention belongs to technical field of aquaculture, particularly relate to a kind of fishes and shrimps mixed cultivation method.
Background technology
at present in aquaculture, particularly raising fish and shrimp is all generally put after seedling throws and support, just until results.Current a lot of area all takes raises together with, but is all adopt traditional extensive fishes and shrimps mixed cultivation method, can affect economic benefit when fish obtains listing.
Summary of the invention
the object of this invention is to provide a kind of fishes and shrimps mixed breed bait-throwing method, to overcome current raising fish and shrimp, adopt traditional extensive fishes and shrimps mixed cultivation method, when fish obtains listing, affect the shortcoming of economic benefit.
the object of the present invention is achieved like this: a kind of fishes and shrimps mixed breed bait-throwing method, pond is set, Collocation cultivation water body, throw in fishes and shrimps seedling, and throw in bait, it is characterized by: breakfast, lunch and dinner of throwing something and feeding every day, just start surrounding after ingesting first will do sth. in advance most of fish to be attracted to Autoamtic bait putting machine in 15 minutes before shrimp material of throwing something and feeding before and shed shrimp material, within every 7-10 days, can stop to feed shrimp material 1-2 and eat; Timing bait throwing in, when a variety of causes will reduce bait throwing in, and should not postpone the bait throwing in time; Want even spreading during bait throwing in, do not pile up, if find that there is the shoal of fish to take the photograph shrimp material all around, should stop to feed shrimp material 1-2 days, before waiting the shoal of fish to come back to device for feeding fish bait, food just starts to continue shrimp material of throwing something and feeding, and can reduce the loss of shrimp material, improves the availability of feed.
adhere to that every day patrols the pool, check the growing state of shrimp, if find that there is abnormal shrimp should stop feeding immediately, comprise fish material and also all stop, utilizing the fish of large gauge to the Low sick shrimp that ingests, effectively can control the generation of disease.
instant invention overcomes of above-mentioned measure is adopted to adopt traditional extensive fishes and shrimps mixed cultivation method at present, it is foster just rear until gather in the crops that raising fish and shrimp puts seedling throwing, due to the individual difference of each fishes and shrimps seedling, make the size of fishes and shrimps very inconsistent, fish affects the shortcoming of economic benefit when obtaining listing, can obtain obvious economic benefit at raising fish and shrimp.
below in conjunction with embodiment, the present invention is described in more detail.
embodiment
fishes and shrimps mixed cultivation method of the present invention, first arranges pond, Collocation cultivation water body, throw in fishes and shrimps seedling, and throw in bait, be provided with blowdown apparatus bottom cultivating pool, then take to arrange the method cultivation that cage goes on the market in batches, described method cage being set and going on the market in batches, be cause between harvest time in cultivation, cage is set in pond bottom, the receipts that then discharge water fishes and shrimps, large fishes and shrimps listing, little fishes and shrimps are thrown foster again.
Embodiment
one. cultivating pool is arranged
cultivating pool will be had abundant water resources, water quality is good, pollution-free water quality, water, electricity, road threeway, irrigation and drainage are convenient, area 10-20 mu, depth of water 1.2-1.8m, pond is that rectangle is as well east-west, the aerator of every 2 mu of outfit one 1.5KW, want orderly installation aerator, make pond waters can form circulating water cultivation along pond flowing.
get rid of pond internal water accumulation, envelope lock shines pond, desilting, whole pond, Xiu Di; Sterilization is removed the evil again; The shrimp pond of acid-base value more than 7.7, quicklime consumption is 10-15 kg/acre, when acid-base value is below 7.7, increases consumption, 3 days time; Second step water inlet 60-80 centimetre, executes camellia oleosa seed cake 20 kgs/acre, 7 days time; 3rd step disinfection by chlorine dioxide.
two. cultivate foundation bait (rich water):
add water organic manure furnishing pulpous state, evenly splashes, 75-100 kg/acre, can divide and apply for 2-3 time, also dry chicken, duck, cow dung can be mixed by 5:1 with quicklime, load textile bag fermentation 7-10 days (apparent temperature), tighten sack, put into pond respectively, when transparency is 30 centimetres, when water colour is yellow green, haul out the water surface, when water is clear, then be reentered in water, consumption 10-50 kg/acre.
three. shrimp seedling is put in a suitable place to breed
select specification 0.8-1.2 centimetre of shrimp seedling, the seedling of nursery head hand seedling or 2-3 stubble should be chosen, the shrimp seedling in a shrimp pond answers single step of releasing foot, when shrimp seedling is transported to, seedling sack is placed in pond water 20-30 minute, one end with the wind, do not put seedling in contrary wind place or shoal place, after opening bag, slowly pour out, Chi Shui is not stired and make muddy.Control the temperature difference when putting seedling and be no more than 2 DEG C up and down, water temperature is more than 18 DEG C, and salinity difference is no more than 5 ‰, and pH value is at 7.6-8.6, and strong wind rainstorm weather should not put seedling.
four. fry is put in a suitable place to breed
the selection of seed: physique can be selected strong in grass carp seedling or Tilapia mossambica seedling, and the specification of grass carp seedling is 0.5-0.75kg/ tail, and Tilapia mossambica specification is 0.1-0.3kg/ tail.
breeding density: can be as the criterion according to pond condition, puts grass carp 100 tail-200 tails/mu, Tilapia mossambica 300-500 tail/mu, and the quantity of fry should not very little, otherwise may the generation of prevention of shrimp disease, and effectively controls prawn disease.
put the time in a suitable place to breed: under the permission of condition, will first put shrimp seedling, after waiting shrimp seedling mark thick about 2-3 ㎝, breed fish fry.
five. the daily management of mature stage
1. patrol pond to observe and detect.
observed content: water colour, transparency.Prawn activity and situation of ingesting, harmful animal situation and the extent of injury, water level and situation of leaking, gate, screen pack etc.
detection of content: visual inspection shrimp body occurs with or without aura, by Hemagglutination Method field quick diagnosis prawn disease, method is: get prawn to be checked, dry body surface moisture content, a standby slide and a blank sheet of paper, the membrana articulata of prawn head cuirass and promerous intersection is directly punctured with finger, blood is allowed to flow out, drip to rapidly on slide, (blank sheet of paper sets off slide) observes blood color, limpid degree and relevant Coagulation test, and visual inspection blood is as clear as crystal, presents nattierblue, and 5-10 condenses into frozen glue shape second rapidly, is healthy shrimp; If blood is light yellow, muddy, the condensation more than 20 seconds maybe can not be condensed, be then disease shrimp.
the policy that the control of disease is adhered to " rely mainly on prevention, anti-overweighting is controlled ", implements to healthy aquaculture technical measures during each cultivation one saves, drug use must perform according to the regulation of " NY5071-2002 pollution-free food; drugs used in aquiculture usage criteria ", forbids to use without obtaining production licence, authentication code, produce the fishing medicine of operative norm, promote the use of glycolylurea class, Operand, antiviral Chinese herbal medicine etc. are without antibiotic property, low-residual, standard compliant medicine.
the reason of the dead shrimp of sick shrimp is:
(1), use germ, weak seedling, large seedling, and seed is subject to the infection of antibiotic medicine.
(2), cultivation density and production management incompatible.
(3) the artificial feed poor quality used, feed essence and description of commodity misfit.
(4), water quality mutation, manpower can not resist, shrimp pond water quality manage improperly, end gains the essentials, lack measure.
(5), fertilizer lack, drug use is improper, abuse, shrimp body to medicine and property reduce.
(6), part raiser lacks cultural technique, or do not grasp completely cultural technique, and quite a few raiser lacks diseases prevention consciousness.
(7), virus infections, bacteriological infection, fungal infection, virus and bacteria mixed infection, parasite is parasitic.
(8), heavy metal pollution is poisoning, and pesticide pollution is poisoning, inorganic matter and Organic Pollution poisoning, composite waste pollutes poisoning, chemically acute poisoning.
preventive measure are: improve prawn physique, strengthen prawn premunition or add Vc, VE and probiotics for a long time, support the shrimp middle and later periods or add Chinese medicine feeding in every 10-15 days.Improvement substrate: regularly use probiotics and substrate modifier, cultivates middle and later periods 7-10 days and uses once.If there is prawn disease should stop all feed for nursing immediately, use microorganism formulation and the water transfer of substrate improved formulations and change the end and increase the dissolved oxygen amount in pond, if shrimp can go on the market, should harvesting go on the market immediately.
2. survey water temperature, dissolved oxygen, acid-base value, transparency, salinity, irregularly measures ammonia nitrogen, nitrite, hydrogen sulphide etc.; Periodic measurement prawn body is long, body weight, and estimates Chi Nei shrimp mantissa.
water temperature: general morning 5:00 and afternoon 2:00-3:00 respectively measure once, grasps the highest water temperature and minimum water temperature in a day, fix a point, depthkeeping degree, water temperature over-high solves by adding water and changing water.
salinity: after shrimp seedling puts 3 days in a suitable place to breed, can add fresh water 5 centimetres every day, reduces salinity, also progressively floods, till when reaching peak level.
dissolved oxygen: high temperature season every night 9:00-11:00 measures once, requires that dissolved oxygen reaches 4 ㎎/more than L, find that anoxic is raised the nose above water to breathe for the moment, take immediately to change water, start, spills chemical enhancement agent, and stops bait throwing in.
ammonia nitrogen: in water, ammonia nitrogen is too high is the main cause that water body is aging, and when the pH value of water body is higher, temperature is higher, and ammonia toxicity is stronger.Reduce ammonia nitrogen method: control stocking rate, reasonable bait throwing in, fertilising, fine day is started shooting 2 hours, and abundant aeration, stirs water, oxygenation, substrate of splashing, improver of water quality, and the microbial ecological preparations such as photosynthetic bacteria of splashing, the person of having ready conditions changes water.
hydrogen sulphide: the gas with rotten egg, when water PH value is lower, temperature is higher, then the toxicity of hydrogen sulphide is stronger, and dissolved oxygen is higher, then the toxicity of hydrogen sulphide is lower, can spill some clays adsorb when hydrogen sulphide exceeds standard, also can spill a little chalybeate, generationization iron precipitates, reduce its concentration, bold and vigorous quicklime also has certain effect.
nitrite: nitrite is too high is the main cause causing various disease, when nitrite is that 0.1-0.8mg/L shrimp is had a sense of urgency, during for 0.9-1.2mg/L, starts dead, reduces the method for nitrite with the method for falling ammonia nitrogen above.
acidity-basicity ph value: acid-base value is first most important water quality index, normal is 7.6-8.6, pH value height is very large to foster shrimp Influence of production, high alkalosis is referred to as time high, strong acid poisoning is referred to as time low, pH value high in shrimp pond can increase ammonia nitrogen toxicity, this is that one of seed of trouble of various viral disease occurs prawn, low pH value, the easy anoxic of water body, therefore stable pH value, have great importance, phenomenon low during height when pH value appears in 2-3 as continuous in shrimp pond days, this is the sick omen of prawn, pH value is on the low side, and quicklime is heightened, consumption controls at 2-3 kg/acre of rice, on a small quantity repeatedly, also soya bean 2.5 pounds/acre of rice can be used, emerge in worm water 6 hours, defibrination, boil, full pool spilling head.As phytoplankton in pond is too many, the low available algae removal spirit of liquid manure transparency, bacterium algae is clean, and part phytoplankton eliminated by chelated copper preparation, reduces pH value.
water colour, transparency: " support shrimp first support water " water colour is yellow green, and yellowish-brown is good, its suitable transparency, cultivation early stage is 30 cm, mid-term 40 cm, later stage 50 cm.Pitchy, milky, clear look, muddy look are bad water colour.
bad water colour is taken measures: change water, fertilising, dispenser thing, rationally bait throwing in solve, as clear bottom is low, water muddiness can execute salt 10 kgs/acre of rice; Or yellow mud clings to 10 kilograms+salt, 10 kgs/acre of rice; Or alum 2 kgs/acre of rice; Or the method such as land plaster 4 kgs/acre of rice solves.
heavy metals exceeding standard is poisoning: in shrimp pond, common heavy metal kind has: lead, zinc, copper, cadmium, nickel, chromium, mercury etc. 7 kinds.Existed by the excess of heavy metal in shrimp pond in recent years, cause various disease, and the scope of causing a disease is wide, the extent of injury is large, has restricted the development of shrimp farming, has suffered the water body of heavy metal pollution, often have " mud skin " to occur in pond, dead algae is deposited in side of a pond Tang Jiao, pond " general pond ".Shrimp gill portion destroys comprehensively, and shades of colour appears in body surface, and the thin out change of body colour is muddy, and behavior has dementia, blunt, jumps, and collides, You Bian, bores bank, and rapidly, speed change is moved about, and side is swum, and spin, stomach is rubescent, hepatopancrease enlargement, stops eating, colony's deformity, canceration etc., occurs new sick as sick in side trip, disease etc. of bending over.
treatment: external application heavy metal poisoning degradation agent: tetrasodium salt of EDTA (EDTA-Na4)
prevention: 0.5ppm; Treatment: 1-2ppm full pool spilling head.
3. bait throwing in.
(1) to throw something and feed every day breakfast, lunch and dinner, just start surrounding after ingesting first will do sth. in advance most of fish to be attracted to Autoamtic bait putting machine in 15 minutes before shrimp material of throwing something and feeding before and shed shrimp material, within every 7-10 days, can stop to feed shrimp material 1-2 and eat.
(2) timing bait throwing in, when a variety of causes will reduce bait throwing in, and should not postpone the bait throwing in time (except heavy rain);
(3) want even spreading during bait throwing in, do not pile up, if find that there is the shoal of fish to take the photograph shrimp material all around, should stop to feed shrimp material 1-2 days, before waiting the shoal of fish to come back to device for feeding fish bait, food just starts to continue shrimp material of throwing something and feeding, and can reduce the loss of shrimp material, improves the availability of feed.
(4) to adhere to that every day patrols the pool, check the growing state of shrimp, if find that there is abnormal shrimp should stop feeding immediately, comprise fish material and also all stop, utilizing the fish of large gauge to the Low sick shrimp that ingests, effectively can control the generation of disease.
4, the anomalous weather such as unexpected incidents and heavy rain is tackled
(1) suitable stocking rate: the cultivating condition of In Fujian Province, the stocking rate considered appropriate is 4-7 ten thousand tails/mu, as arid season, the suggestion too high shrimp pond of density, should and time-division pond or to catch.
(2) when putting seedling, water level can not be too shallow, and 0.8-1.0 rice is advisable, and prevents because of dry season solar radiation natural evaporation, and reduces water level.
(3) strict purification and sterilization water source, the person of having ready conditions, fresh groundwater drought resisting is taken out in well-digging, and as acid-base value is too low, available quicklime is heightened, and has iron rust or other metal can use the neutralization of 0.5-1ppm Huitre Lait.External source water quality is more fertile, and before suction shrimp pond, preferably in cistern 4-6ppm quicklime process, use again after the property of medicine disappears, directly enters shrimp pond water inlet and hang sterilization bag sterilization.
(4) Reasonable input biological or chemical water purification agent, improves shrimp pond self-purification capacity.As nitrous acid is clean, ammonia nitrogen is clean, and the chemical water purification agent such as Huitre Lait is photosynthetic, EM bacterium, the biologic water cleaners such as brood cell hay bacillus, and regularly sprinkles zeolite powder, and dolomite dust etc. are replenished the calcium, anti-soft shell, and kwashiorkor occurs.
(5) high-quality of throwing something and feeding manufactured feed, and control daily ration, feeding quantity, for oral administration: allicin, Vc, VE, probiotic etc., strengthen resistance against diseases.
(6) heavy rain multiple season, water level should not be too low, and upper strata rainwater of should draining, suitably adds new water, fine day 4-6ppm lime disinfection after rain, or with disinfection by chlorine dioxide in 24 hours, as rained continuously, then need within three days, sterilize once, after water temperature is gone up, prawn ingests and obviously rises, but bait throwing in can not be surged, and should increase gradually on a small quantity.
5, oxygenation.
aerator has oxygenation, stirs the three zones such as water, aeration.As carried out water-bed blowing aeration with air compressor, coordinate waterwheel aerator effect good.Under normal circumstances; put and start shooting 2 times every day in 30 days after seedling; at noon and the 1-2 hour that starts shooting dawn; extend the available machine time according to needs later; the start of cultivation later stage whole day, overcast and rainy increase available machine time and number of times, make oxygen in water remain at more than 4mg/L; one hour should be shut down, at fine day at dusk and do not start shooting overcast and rainy noon when bait throwing in.
6, improve prawn and unify shell.
prawn shell is significant, not shell, just can not grow, will be dead, the shell of shrimp body, and the bottom that can repose is carried out, and also can swim to carry out in water body, two kinds of shells run all need one the safest, tranquil living environment.In particular cases this, what avoid most aborning is in water body, discharge excessive quicklime (improve water temperature and acidity-basicity ph value, cause environment cataclysm, ruined shell shrimp) and be cautious use of disinfectant.Impel prawn to unify shell unify shell element (spirit of blowing a whistle) point external application with prawn and take orally, by specification uses, and also can take shrimp crab shelling element orally, external application camellia oleosa seed cake 5-15ppm(is dried, pulverizes, soaks, splashed).
7. regulating and controlling water quality.
water colour is the reflection of hydroplankton kind, quantity and suspended material etc., the quality of shrimp pond water quality can judge according to its water colour and transparency, and water colour is diversity, different regions, different substrate, different bait, water colour is different, even if its water colour of same shrimp pond is also different with season and constantly change, some water colour prawn culturings are produced favourable, what have is then harmful to, therefore we must understand its reason changed and rule, and just adopting an effective measure by service helps user to regulate water quality.
the feature of excellent water colour: can increase the dissolved oxygen in water, stablizes water temperature, stabilizing water quality, reduces the content of noxious material in water; Thering is provided the bait that prawn is natural, reduce the transparency of water body, is the growing environment that its construction is good; Suppress silk algae, the growing of end algae, also suppress the breeding of germ simultaneously.Water colour is divided into two large classes: excellent water colour and dangerous water colour.
(1) ammonia nitrogen.
higher producing cause be superfluous residually to raise, a large amount of excreta of shrimp, fall the accumulation of algae, underground water and excessively fertilising cause.More than 0.5, mg/L, measurement index ammonia nitrogen can think that pond water ammonia nitrogen is higher.The harm of ammonia nitrogen prawn, similar in appearance to nitrite.PH value and the water temperature of ammonia nitrogen toxicity and Chi Shui have substantial connection, ordinary circumstance, and temperature and pH value are higher, and toxicity is stronger.Processing method, for starting aerator or the agent of full pool spilling head chemical enhancement, makes Chi Shui have sufficient dissolved oxygen, to promote that ammonia nitrogen is to the conversion of nitrite.Or splash zeolite or active carbon, generally use 10 kilograms-20 kilograms, zeolite or activated carbon 2 kilograms-3 kilograms for every mu respectively, can absorption part ammonia nitrogen.In addition, the microorganism formulation such as bacillus, photosynthetic bacteria can be used, decompose ammonia nitrogen with this.Can cultivate in addition, plant shark plant, as weter hyacinth etc. can by changing water to process to adsorb ammonia nitrogen etc. poisonous stunt is with good conditionsi.The toxicity of ammonia nitrogen is reduced in addition by reducing pH value.
(2) pH value.
pH is one of important indicator of water quality, and it directly reacts the growing state of algae, and pH value is too high or too low has direct harm to prawn.The too low pH value of prawn remarks that makes of pH value declines, and slackens its oxygen carrying capability, can cause prawn physiology anoxic, although now sufficient the but prawn of dissolved oxygen in water still can Yin Shengli anoxic and raising the nose above water to breathe, and stops ingesting, and now fertile the and bacterium of shipwreck easily breeds.PH value is too high, corrodes gill tissue, is unfavorable for that shrimp absorbs water medium trace element, easily cause shelling difficulty or soft shell, night easy anoxic.When during trace index > 8.8, a large amount of ion ammonia can change into poisonous NH3 < 6.0 pH value lower than 6.0 time, in water, the sulphide of more than 90% can exist with the form of H2O, the toxicity of increase sulphide.> 10.6 or < 4.0PH value lower than 4.0 or higher than 10.6 time prawn can not survive.
the morning, 7 PH can think that more than 8.5 Chi Shui PH is higher.Now can entirely to splash lactic acid bacteria+sugar 3 pounds/acre on the pool.Also can splash acetic acid 3-4 kg/acre on the pool entirely, connect and sprinkle 3 times and sprinkle 5 pounds/acre, sodium bicarbonate afterwards every other day.
the morning lower than 7.5,7 PH can think that Chi Shui PH is on the low side
available quicklime regulates, each with 5-8 pound/acre, connects and sprinkles 3 times.At the bottom of the meta-acid pool or fall algae etc. there will be PH on the low side 2, impel algae reproduction to increase pH value by rich water
(3) total alkalinity
water salinity is lower than less than 10 degree, and its basicity is not less than 80ppm, and salinity is higher than more than 10 degree, and its basicity is not less than 120ppm basicity.The solution that basicity is on the low side: sodium bicarbonate, lime, dolomite dust (throwing in again after first dissolving with vinegar during PH > 8.6)
points for attention:
water body PH is 8.3 time, and the solvability of HCO3-is the highest, now uses lime or dolomite dust class stunt, and its effect improving total alkalinity is the strongest.The maintenance PH8.3 time generally appears at night at most, and therefore service time is best between the lights.
use calcium oxide CaO(quicklime) and the slaked lime Ca (OH) 2 of (white lime) time, directly can not improve the total alkalinity of water body, but indirectly improve basicity by the tired process of gathering CO3 of Ca2+; But it directly can improve the hardness of water body.
8, Appropriate application fertilizer in rich water
fertilizer is mainly derived from plant or animal, and imposing on soil to provide plant nutrition is the carbonaceous material of its major function, and its feature is that the slow fertilizer efficiency of fertile speed is long.All kinds of tangerine stalk of compost, fallen leaves, green grass, plant and animal residues, human and animal excreta are raw material, in proportion mutually mixing or be mixed into a small amount of earth a kind of fertilizer green manure that aerobe fermentation of acting charitably becomes thoroughly decomposed and utilize and to cultivate or wild green plants body makes fertilizer.If the barnyard manure such as mung bean, broad bean, kind vegetables are one of important fertilizer varieties the fertilizer crop stalk agricultural crop straw that the fecaluria of the livestock and poultry such as pig, ox, horse, sheep, chicken, duck is made.
cake fertilizer: colza cake, cottonseed cake, dregs of beans, tea seed cake, rice, chaff, peanut press pulp etc.
inorganic fertilizer: inorganic fertilizer is mineral fertilizer, is called for short chemical fertilizer.It is simple that it has composition, high containing active ingredient, soluble in water, decomposes fast, and its feature is that the fast fertilizer efficiency of fertile speed is slow.Superphosphate wants composition to be calcium dihydrogen phosphate (Ca (H2PO4) 2 and gypsum CaSO42H2O.Urea
nitrogenous 46%, be at most nitrogenous in solid nitrogenous fertilizer.Fertilizer efficiency is slower than ammonium sulfate, but fertilizer efficiency is longer.Ammonium sulfate: containing nitrogen 20%-21%, the fertilizer efficiency of per kilogram ammonium sulfate is equivalent to 60-100kg night soil, soluble in water, and fertilizer efficiency is fast, the short general 10-20 days of the term of validity.
composite fertilizer: composite fertilizer instructs two or more the chemical fertilizer containing in N, P, K tri-kinds of elements: potassium sulfate, containing potassium 48%-52%.Main as base manure, also can be used as to topdress.
the sediment types rich water method consumption of 1 meter (every mu depth of water)
old man at the bottom of mud:
method one: urea 5kg+ superphosphate 1kg, if fresh water can add K2SO4(, due to fresh water, comparatively potassium deficiency is fertile) 1kg.
method two: sealing fertilizer 3kg, when topdressing, consumption reduces by half.
except above-mentioned fertilizer, can consider to apply a small amount of fertilizer: each 3kg of rice bran, peanut press pulp, tea dregs of rice 5kg; Topdress in addition into use inorganic fertilizer, consumption reduces by half.
the new pool:
method one: fish meal 3kg+ dregs of beans (boiling) 3kg+ bacillus 1kg+ dried yeast 50g+ sugar 0.5kg, ferment 3-4 days afterwards full the pool splash.(pool for more difficult fertilizer)
method two: chicken manure 20kg(ferments after 3-4 days and uses)+tea dregs of rice 5kg(soaks and removes slag for 3-5 days)
method three: rice bran 6-8kg(or peanut press pulp 4-6kg)+bacillus 1kg, soaking fermentation 3-4 days splashes.When topdressing in addition, consumption reduces by half.
the sandy new pool, old man:
method one: chicken manure 20-40kg(uses after fermenting, divides and uses for 3 times, note carrying out disinfection to it during use), urea 3kg+ superphosphate 1kg(or composite fertilizer 3kg/ mu).
topdress: chicken manure 3kg/ mu+1.5kg/ mu composite fertilizer, take the circumstances into consideration increase and decrease depending on water colour situation.
method two: fish meal 3kg+ dregs of beans (boiling) 3kg+ bacillus 1kg+ dried yeast 50g+ sugar 0.5kg, fermenting, the full pool was bold and vigorous afterwards in 3-4 days
spill.At the bottom of mulch film-ammonium sulfate (ammonium sulfate fertilizer efficiency comparatively urea is quick) 2kg+0.5kg superphosphate; Use the fish meal 5kg+ bacillus 1kg fermented every other day.Topdress and use 1-2kg/ mu composite fertilizer.
six. cage is set.
cage commercially has sale, is common to catch fish pot, and cross section is rectangle, and four limits are iron wire, and four sides surrounds, more than general long number rice for fishnet.In three points of a period of time of results, cage is arranged at pond bottom.Discharge water and receive fish, cage is arranged at pond bottom after one week, discharge water and receive fish.Gathered in the crops by the fish crept in cage and classify, large list marketing, pond culture is thrown in little continuation.Cage is set again,
time again to three point two that gathers in the crops, again cage is arranged at pond bottom after one week, discharges water and receive fish.Gathered in the crops by the fish crept in cage and classify, large list marketing, pond culture is thrown in little continuation.When expiring to results again, fishes all for pond is all gathered in the crops.
Claims (2)
1. a fishes and shrimps mixed breed bait-throwing method, pond is set, Collocation cultivation water body, throw in fishes and shrimps seedling, and throw in bait, it is characterized by: breakfast, lunch and dinner of throwing something and feeding every day, just start surrounding after ingesting first will do sth. in advance most of fish to be attracted to Autoamtic bait putting machine in 15 minutes before shrimp material of throwing something and feeding before and shed shrimp material, within every 7-10 days, can stop to feed shrimp material 1-2 and eat; Timing bait throwing in, when a variety of causes will reduce bait throwing in, and should not postpone the bait throwing in time; Want even spreading during bait throwing in, do not pile up, if find that there is the shoal of fish to take the photograph shrimp material all around, should stop to feed shrimp material 1-2 days, before waiting the shoal of fish to come back to device for feeding fish bait, food just starts to continue shrimp material of throwing something and feeding, and can reduce the loss of shrimp material, improves the availability of feed.
2. fishes and shrimps mixed breed bait-throwing method according to claim 1, it is characterized by: adhere to that every day patrols the pool, check the growing state of shrimp, if find that there is abnormal shrimp should stop feeding immediately, comprise fish material also all to stop, utilize the fish of large gauge to the Low sick shrimp that ingests, effectively can control the generation of disease.
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| CN105265348A (en) * | 2014-07-22 | 2016-01-27 | 石日福 | Fish-shrimp mixed cultivation method and cultivation pond |
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| Publication number | Priority date | Publication date | Assignee | Title |
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