養大規格蟹的人多沒問題,關鍵是產量,也就是回捕率。塘裏的蟹是不是真的好,3次蛻殼後定見分曉。為了提高產量,筆者總結了幾點春季工作關鍵點,以供蟹農們參考
古人雲“煙花三月下揚州”,隨(sui)著(zhe)陽(yang)春(chun)三(san)月(yue)氣(qi)溫(wen)的(de)攀(pan)升(sheng),經(jing)曆(li)漫(man)長(chang)冬(dong)季(ji)的(de)蟄(zhe)伏(fu),人(ren)們(men)也(ye)開(kai)始(shi)踏(ta)青(qing)放(fang)鬆(song)。當(dang)然(ran)對(dui)於(yu)蟹(xie)寶(bao)寶(bao)們(men)來(lai)說(shuo),當(dang)主(zhu)人(ren)們(men)開(kai)始(shi)加(jia)水(shui)注(zhu)塘(tang),它(ta)們(men)的(de)活(huo)動(dong)範(fan)圍(wei)也(ye)擴(kuo)大(da)了(le),不(bu)必(bi)擠(ji)在(zai)狹(xia)長(chang)的(de)環(huan)溝(gou)內(nei),是(shi)時(shi)候(hou)去(qu)攤(tan)麵(mian)上(shang)溜(liu)溜(liu),伸(shen)伸(shen)腿(tui)蛻(tui)蛻(tui)殼(ke),吸(xi)收(shou)陽(yang)光(guang)雨(yu)露(lu),此(ci)情(qing)此(ci)景(jing)煞(sha)是(shi)喜(xi)人(ren)。過(guo)去(qu)一(yi)年(nian)的(de)慘(can)痛(tong)似(si)乎(hu)曆(li)曆(li)在(zai)目(mu),整(zheng)體(ti)發(fa)病(bing)嚴(yan)重(zhong)、規格小、產(chan)量(liang)低(di),而(er)寄(ji)予(yu)厚(hou)望(wang)的(de)春(chun)節(jie)價(jia)格(ge)卻(que)出(chu)乎(hu)意(yi)料(liao)下(xia)行(xing),囤(tun)蟹(xie)的(de)大(da)戶(hu)們(men)虧(kui)損(sun)嚴(yan)重(zhong),大(da)家(jia)的(de)荷(he)包(bao)嚴(yan)重(zhong)營(ying)養(yang)不(bu)良(liang)。按(an)照(zhao)今(jin)年(nian)開(kai)春(chun)的(de)養(yang)蟹(xie)情(qing)形(xing),仿(fang)佛(fo)發(fa)財(cai)的(de)機(ji)會(hui)來(lai)了(le)。筆(bi)者(zhe)並(bing)不(bu)是(shi)不(bu)應(ying)景(jing)的(de)人(ren),但(dan)是(shi)忍(ren)不(bu)住(zhu)心(xin)裏(li)的(de)話(hua),還(hai)是(shi)要(yao)給(gei)大(da)家(jia)潑(po)潑(po)冷(leng)水(shui),常(chang)言(yan)道(dao)樂(le)極(ji)生(sheng)悲(bei),切(qie)莫(mo)大(da)意(yi)!
一、養蟹大環境
先來看看今年養蟹大環境,所謂知己知彼百戰百勝。
1、大規格蟹今年是否一定行?
2015年什麼最貴?大螃蟹!可是2015年天不時地不利,“水癟子”病bing情qing嚴yan重zhong,江jiang蘇su各ge地di都dou時shi常chang發fa生sheng大da規gui模mo死si蟹xie,導dao致zhi大da規gui格ge蟹xie行xing情qing水shui漲zhang船chuan高gao。反fan觀guan今jin年nian,扣kou蟹xie價jia格ge不bu高gao,養yang殖zhi戶hu們men更geng注zhu重zhong扣kou蟹xie的de質zhi量liang,並bing且qie在zai選xuan苗miao的de時shi候hou嚴yan格ge過guo篩shai,放fang苗miao密mi度du普pu遍bian下xia降jiang,大da家jia都dou在zai搏bo大da規gui格ge蟹xie。但dan市shi場chang畢bi竟jing是shi市shi場chang,價jia格ge和he供gong求qiu的de杠gang杆gan不bu以yi個ge人ren意yi誌zhi為wei轉zhuan移yi,想xiang以yi“大蟹”換“大寶馬”的熱情沒錯,但保持一定養殖理性,合理規劃也非常有必要。
2、第一殼華麗轉身
近(jin)段(duan)時(shi)間(jian),筆(bi)者(zhe)走(zou)訪(fang)了(le)江(jiang)蘇(su)螃(pang)蟹(xie)的(de)主(zhu)要(yao)養(yang)殖(zhi)區(qu)域(yu),大(da)部(bu)分(fen)螃(pang)蟹(xie)已(yi)完(wan)成(cheng)了(le)第(di)一(yi)次(ci)蛻(tui)殼(ke),而(er)且(qie)很(hen)多(duo)塘(tang)口(kou)蛻(tui)殼(ke)較(jiao)好(hao),蟹(xie)農(nong)們(men)喜(xi)大(da)普(pu)奔(ben)。筆(bi)者(zhe)一(yi)位(wei)好(hao)友(you)的(de)塘(tang)口(kou),蛻(tui)下(xia)來(lai)的(de)殼(ke)平(ping)均(jun)就(jiu)有(you)7-8錢(qian),水(shui)草(cao)長(chang)勢(shi)喜(xi)人(ren),螺(luo)螄(si)繁(fan)殖(zhi)情(qing)況(kuang)也(ye)很(hen)好(hao),而(er)這(zhe)並(bing)不(bu)是(shi)個(ge)例(li),按(an)照(zhao)這(zhe)個(ge)發(fa)展(zhan)態(tai)勢(shi),大(da)規(gui)格(ge)蟹(xie)必(bi)然(ran)是(shi)今(jin)年(nian)的(de)常(chang)態(tai)。幸(xing)福(fu)來(lai)得(de)是(shi)不(bu)是(shi)太(tai)突(tu)然(ran)了(le)?
二、提高回捕率的春季工作關鍵點
jinnianshieerninuodexiaonian,yimuqianxingshikanlaiyinggaishigebucuodenianjing,taipingshengshideniandaidajiayaozuodeshianshenliming,yangchudaguigexiederenduomeiwenti,jiagejiusuanbugao,danyebuhuaiya,guanjianshinidechanliang,yejiushihuibulv。suojianfeisuode,nikandaodemeihaokenengzhishibiaomianxianxiang,tanglidexieshibushizhendehao,3次蛻殼以後必見分曉,筆者建議在春季,蟹農們要做好以下幾個方麵:
1、保持水質嫩爽,肥到位即可,穩定大於一切
很多蟹農朋友都會有個肥水“處女座”情qing節jie,認ren為wei水shui一yi定ding要yao肥fei得de漂piao亮liang,稍shao微wei有you點dian變bian化hua立li馬ma去qu買mai肥fei水shui產chan品pin。事shi實shi上shang,在zai肥fei水shui這zhe個ge環huan節jie,應ying該gai以yi穩wen定ding變bian化hua小xiao為wei基ji本ben要yao點dian,你ni所suo要yao關guan注zhu的de是shi水shui草cao生sheng長chang情qing況kuang,螃pang蟹xie蛻tui殼ke情qing況kuang,螺luo螄si生sheng長chang情qing況kuang。肥fei水shui是shi生sheng物wu的de過guo程cheng,投tou入ru產chan品pin一yi般ban是shi化hua學xue品pin,所suo謂wei物wu極ji必bi反fan,現xian在zai水shui溫wen剛gang上shang來lai,肥fei料liao要yao精jing選xuan易yi吸xi收shou的de,否fou則ze沒mei吸xi收shou的de肥fei水shui產chan品pin最zui後hou沉chen在zai水shui底di,高gao溫wen季ji節jie就jiu會hui出chu來lai“造反”,不注意的話將來等著你的可能就是滿塘藍藻!當dang然ran有you人ren說shuo配pei合he芽ya孢bao杆gan菌jun分fen解jie底di質zhi中zhong沒mei吸xi收shou的de肥fei料liao,可ke事shi實shi是shi早zao春chun塘tang底di溫wen度du適shi合he芽ya孢bao杆gan菌jun生sheng長chang嗎ma?而er且qie芽ya孢bao杆gan菌jun存cun活huo要yao耗hao氧yang的de。池chi塘tang是shi個ge平ping衡heng體ti係xi,耗hao氧yang是shi能neng量liang代dai謝xie的de過guo程cheng,無wu謂wei的de消xiao耗hao會hui加jia重zhong水shui體ti負fu擔dan,最zui終zhong導dao致zhi水shui體ti惡e化hua。所suo以yi,蟹xie農nong們men請qing三san思si而er後hou行xing。
2、輪蟲可恥,殺蟲需小心,且殺且觀察
春季池塘內輪蟲生長較快,而輪蟲的存在導致耗氧、難肥水!這(zhe)讓(rang)蟹(xie)農(nong)們(men)很(hen)著(zhe)急(ji),所(suo)以(yi)這(zhe)段(duan)時(shi)間(jian)都(dou)在(zai)殺(sha)輪(lun)蟲(chong),但(dan)是(shi)筆(bi)者(zhe)還(hai)是(shi)那(na)句(ju)話(hua),不(bu)要(yao)輕(qing)易(yi)破(po)壞(huai)平(ping)衡(heng),畢(bi)竟(jing)這(zhe)不(bu)是(shi)保(bao)健(jian)品(pin),死(si)蟲(chong)事(shi)小(xiao),水(shui)壞(huai)了(le)蟹(xie)長(chang)不(bu)大(da)則(ze)事(shi)大(da)!所suo以yi在zai殺sha蟲chong時shi盡jin量liang做zuo到dao少shao量liang多duo次ci,如ru果guo殺sha蟲chong後hou水shui色se發fa生sheng變bian化hua,趕gan緊jin解jie毒du補bu菌jun,建jian議yi大da家jia用yong植zhi物wu乳ru杆gan菌jun來lai解jie毒du,植zhi物wu乳ru杆gan菌jun生sheng長chang不bu耗hao氧yang,且qie產chan生sheng的de是shi乳ru酸suan,解jie毒du相xiang對dui安an全quan,持chi續xu產chan酸suan過guo程cheng也ye給gei藻zao類lei創chuang造zao利li於yu生sheng長chang的de微wei酸suan性xing環huan境jing。超chao市shi裏li麵mian伊yi利li和he蒙meng牛niu的de益yi生sheng菌jun大da多duo也ye是shi這zhe個ge成cheng分fen,人ren用yong都dou沒mei問wen題ti,所suo以yi大da家jia可ke以yi放fang心xin使shi用yong。
3、微量元素不可缺
正zheng常chang改gai底di調tiao水shui以yi外wai,筆bi者zhe建jian議yi蟹xie農nong們men給gei水shui體ti補bu充chong微wei量liang元yuan素su,此ci為wei藻zao類lei和he蟹xie類lei生sheng長chang必bi不bu可ke少shao的de成cheng分fen。早zao春chun,蟹xie寶bao寶bao們men在zai舒shu服fu的de環huan境jing中zhong,容rong易yi暴bao飲yin暴bao食shi,微wei量liang元yuan素su的de缺que乏fa會hui埋mai下xia隱yin患huan。後hou期qi的de肝gan髒zang、腸chang道dao問wen題ti以yi及ji不bu明ming原yuan因yin死si亡wang,實shi際ji上shang和he早zao期qi沒mei注zhu重zhong營ying養yang均jun衡heng有you很hen大da關guan係xi,同tong時shi水shui體ti裏li藻zao類lei生sheng長chang是shi否fou良liang好hao和he微wei量liang元yuan素su密mi不bu可ke分fen。所suo以yi補bu充chong微wei量liang元yuan素su,水shui體ti潑po灑sa和he內nei服fu齊qi頭tou並bing進jin,讓rang蟹xie寶bao寶bao們men順shun利li渡du過guo前qian3殼時期,體質強了自然能更從容應對中後期過程中的不利因素。
隨sui著zhe溫wen度du上shang升sheng,水shui體ti裏li真zhen菌jun滋zi生sheng,魚yu類lei常chang發fa生sheng水shui黴mei病bing,蟹xie塘tang雖sui受shou影ying響xiang沒mei那na麼me誇kua張zhang,但dan也ye會hui存cun在zai,譬pi如ru纖xian毛mao蟲chong。好hao在zai大da部bu分fen蟹xie農nong朋peng友you養yang成cheng殺sha青qing苔tai習xi慣guan,這zhe類lei藥yao物wu實shi際ji也ye有you殺sha滅mie纖xian毛mao蟲chong的de作zuo用yong,所suo以yi現xian在zai纖xian毛mao蟲chong情qing況kuang比bi以yi往wang有you下xia降jiang。
養yang蟹xie是shi個ge精jing細xi活huo,沒mei有you人ren能neng隨sui隨sui便bian便bian成cheng功gong。對dui於yu蟹xie本ben身shen體ti質zhi調tiao理li和he池chi塘tang環huan境jing打da造zao,是shi一yi個ge雙shuang管guan齊qi下xia的de過guo程cheng,也ye是shi累lei積ji的de過guo程cheng,需xu要yao的de是shi耐nai心xin和he細xi心xin。筆bi者zhe認ren為wei,早zao春chun工gong作zuo做zuo到dao位wei,後hou期qi管guan理li得de當dang,一yi定ding會hui有you穩wen定ding的de回hui捕bu率lv。優you秀xiu的de蟹xie農nong能neng統tong籌chou大da局ju,同tong時shi也ye明ming察cha秋qiu毫hao,對dui於yu每mei一yi隻zhi蟹xie都dou努nu力li做zuo到dao細xi心xin嗬he護hu。
作者:青島根源生物集團 錢禹
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