huangshanyouguangkuodexiaoshoushichanghejiaogaodexiaoshoujiage,ranerzhongduoyangzhizhequeyinjishuxinxiquefadengyuanyin,mangmuyangzhierdaozhishibai。zhuyaobiaoxianzairuxiajigefangmian。
1.亂購苗種。目前,我國黃鱔人工繁殖技術尚未達到大批量生產供應商品養殖的水平,許多養殖戶到湖北武漢等地購買的所謂"特大黃鱔"苗種或其他所謂的"優質"苗(miao)種(zhong),實(shi)為(wei)從(cong)市(shi)場(chang)上(shang)購(gou)買(mai)的(de)野(ye)生(sheng)鱔(shan)苗(miao),且(qie)這(zhe)些(xie)苗(miao)種(zhong)因(yin)商(shang)販(fan)長(chang)時(shi)間(jian)不(bu)科(ke)學(xue)的(de)高(gao)密(mi)度(du)貯(zhu)存(cun)及(ji)反(fan)複(fu)轉(zhuan)運(yun),多(duo)數(shu)已(yi)患(huan)上(shang)發(fa)燒(shao)病(bing),用(yong)於(yu)養(yang)殖(zhi)時(shi)死(si)亡(wang)率(lv)可(ke)達(da)90%~100%.所(suo)以(yi),購(gou)買(mai)苗(miao)種(zhong)時(shi)切(qie)記(ji)要(yao)認(ren)真(zhen)辨(bian)別(bie)。一(yi)般(ban)人(ren)工(gong)養(yang)殖(zhi)黃(huang)鱔(shan)可(ke)選(xuan)擇(ze)引(yin)進(jin)優(you)良(liang)繁(fan)殖(zhi)種(zhong)鱔(shan)進(jin)行(xing)半(ban)人(ren)工(gong)繁(fan)殖(zhi)或(huo)自(zi)然(ran)繁(fan)殖(zhi)來(lai)獲(huo)取(qu)鱔(shan)苗(miao),也(ye)可(ke)自(zi)己(ji)在(zai)本(ben)地(di)選(xuan)購(gou)優(you)質(zhi)鱔(shan)苗(miao)用(yong)於(yu)催(cui)肥(fei)養(yang)殖(zhi)。
2.把書店的參考書當法寶。目前,國內的養鱔技術書籍雖然已有10來lai種zhong版ban本ben,但dan其qi內nei容rong基ji本ben上shang都dou是shi照zhao搬ban一yi般ban的de養yang魚yu技ji術shu或huo搬ban出chu一yi些xie空kong洞dong的de理li論lun來lai故gu弄nong玄xuan虛xu,真zhen正zheng的de實shi用yong經jing念nian是shi少shao之zhi又you少shao,僅jin依yi靠kao這zhe些xie技ji術shu是shi很hen難nan取qu得de成cheng功gong的de。初chu涉she養yang鱔shan者zhe最zui好hao是shi到dao國guo內nei知zhi名ming的de養yang鱔shan企qi業ye或huo養yang鱔shan大da戶hu處chu現xian場chang參can觀guan學xue習xi,以yi掌zhang握wo切qie實shi可ke行xing的de養yang鱔shan技ji術shu。
3.大小混養。同一池(網箱)中zhong大da小xiao黃huang鱔shan混hun養yang,小xiao鱔shan不bu敢gan爭zheng食shi而er體ti質zhi逐zhu漸jian衰shuai弱ruo甚shen至zhi死si亡wang。餌er料liao不bu足zu時shi會hui發fa生sheng黃huang鱔shan相xiang互hu殘can食shi。因yin此ci,大da小xiao黃huang鱔shan混hun養yang時shi,雖sui大da鱔shan長chang速su快kuai,但dan整zheng體ti產chan量liang過guo低di。
4.池chi水shui過guo深shen。黃huang鱔shan與yu一yi般ban的de魚yu類lei不bu同tong,其qi主zhu要yao呼hu吸xi途tu徑jing不bu是shi靠kao鰓sai而er是shi依yi靠kao咽yan腔qiang,又you因yin黃huang鱔shan體ti內nei結jie構gou無wu鰾biao,不bu能neng在zai不bu同tong水shui層ceng隨sui意yi漂piao浮fu停ting留liu,必bi須xu露lu出chu水shui麵mian呼hu吸xi空kong氣qi。池chi水shui過guo深shen,黃huang鱔shan需xu頻pin繁fan遊you至zhi水shui麵mian呼hu吸xi而er消xiao耗hao大da量liang體ti力li,影ying響xiang正zheng常chang生sheng活huo生sheng長chang。池chi養yang黃huang鱔shan據ju鱔shan體ti大da小xiao水shui深shen宜yi在zai20-30厘米左右,而網箱養鱔水草應盡量充滿整個網箱,以便為黃鱔提供良好的棲息和呼吸條件。
5.濫施糞肥。鱔池水體小,施糞肥極易敗壞水質,誘發疾病。
6.忽視培植水草。水草能為黃鱔養殖防暑降溫、淨化水質並能為黃鱔提供優良的隱蔽場所。沒有水草的鱔池無法營造良好的生態環境,養殖黃鱔也難成功,很難實現高產量、高效益。
7.偏"素"缺"葷".有的養殖者利用麥麩、菜餅、豆渣、米飯、qingcaidengzhiwuxingerliaoweihuangshan,huangshanyanzhongjie,queershiyehuishaoliangtunshi,danqiyingyangquemanzubulehuangshanshengminghuodongdexuyao,gengtanbushangshengchangzengzhong,huangshanhuizhujianshouruohefabingsiwang。huangshanshuroushixingyulei,yingtouweidongwuxingsiliaohuoquanjiapeihesiliao。
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