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百度公益在水田里养鳗鱼需要许多“心眼”去做有责任心的人。施肥和药物治疗都是技术活动。

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    在水田里养鳗鱼应该是一个多心多眼的“有责任心”的人,这样才能对你的鳗鱼养殖负责。在水田养殖鳗鱼应注意以下几点:(1)首先选择水田进行水田修复消毒,然后建立防渗墙。鱼沟和鱼兜应在移植前一周挖好,防逃生网应建在排水口内。上述设施在移植到养鱼多年的水田前15天应进行修剪和消毒。常用的药物有生石灰和漂白粉。生石灰每100平方米使用4-5公斤。漂白粉每100平方米使用0.5公斤。它溶于水中,洒在整个池塘里。还需要耙一次沉积物,以充分杀灭泥浆中的细菌和各种鱼虾。7-8天后,放入几条鱼(称为试验鱼)观察活动是否正常,如果没有异常情况,表明药物毒性消失,可以施肥,移植幼苗,放鳗鱼种子。(2)养殖鳗鱼品种必须强壮、黄色、斑点大、无伤、无病、残疾、活动力强、体型相同。具体规格如下:40克鳗鱼每667平方米25000条,小鳗鱼每667平方米25000条。(3)黄鳝的主要饲料是新鲜蚯蚓、小鱼、虾、蜗牛、苍蝇、蝌蚪和新鲜蚕蛹。它还可以喂养内脏、碎肉和家畜和家禽的残余物。也可以用麦芽、豆饼、豆渣、麦麸或水果、蔬菜进行驯化,也可以用人工饲料喂养。饵料要定时、定点、定质、定量。每天下午4-6点进食。在七月到九月的喂养高峰期,早上再喂一次。不要随便改变喂食时间。喂食时,鱼饵应该放在鱼袋里的鱼饵桌上。鱼饵台是一个由木制框架和密集网组成的平台,它悬挂在鱼兜上,在水面以下10厘米。鱼饵必须是新鲜的,残饵必须及时清理干净。每天的摄食量是鳗鱼总重量的4%-8%,以次日为准。(4)为了维持深水稻田的水位,应采取“以预稻田为主,多次晒田,后期干湿灌溉”的方法。具体操作是:8月20日前,稻田水深保持在6~10cm之间,20日,田间排水,沟壑水位保持在15cm,田间晒干。然后灌溉并保持水位在6到10厘米之间。在拔节和孕穗之前,再把田地稍微晒一晒。从拔节孕穗期到灌浆期,水深保持在6cm左右,灌溉和晒田交替进行到10月中旬。十月中旬以后,稻田的水位应该保持在10厘米直到收获。(五)平时管理要注意观察鳗鱼的生长和饮食情况,及时发现病害,在水稻施肥、喷药时,要引鳗入鱼塘,排鱼沟水,经常检查围栏内是否有鱼逃生和防治的迹象。漏网,雨天检查排水口是否畅通,要定期换水,保持水质好,水温低,旺季在鱼塘上捕捞。在遮荫下,鱼袋内可以种植少量的水花生、水葫芦或水浮莲,不仅净化了水质,而且降低了水温。当天气变化时,应注意观察鳗鱼活动。当天气闷热时,人们发现鳗鱼从洞里出来,竖起身体前部,把头露出水面。这表明水是缺氧的,因此必须及时更换水。如果发现鳗鱼出洞游得懒散,身体部分发白,表明鳗鱼病了,必须及时采取措施预防感染。如何给鳗鱼稻田施肥?施肥有利于稻鱼养殖。黄鳝稻田施肥应以基础肥为主,辅以追肥、有机肥和化肥。有机肥料主要是人、牲畜和家禽的粪便。化肥包括磷肥、氮肥和钾肥。磷肥主要是钙磷肥和过磷酸钙。钙镁磷肥施用前应先用有机肥堆肥发酵。在堆肥过程中,钙镁磷肥与有机肥混合10次以上,并蒸煮1个月以上。过磷酸盐也应与有机肥混合或与粪肥或粪便和尿液堆肥。氮肥主要包括尿素、硫酸铵和碳酸铵。钾肥主要包括硝酸钾和硫酸钾。施肥时,在移栽苗木前必须施用足够的基肥。每667平方米施用800~1000公斤人畜粪便作基肥,长效尿素作基肥,每667平方米施用25公斤,碳酸铵作基肥,每667平方米施用25公斤。可添加3kg硫酸钾或硝酸钾、3kg过磷酸钙或磷酸钙镁。一周后,移植幼苗并种植鳗鱼。在生长后期,经常追肥,追肥量越来越少,施肥分为几个部分。基肥占全年施肥量的70%~80%,追肥占20%~30%。几种常用肥料的安全用量为每667平方米:硫酸铵10-15公斤;尿素5-10公斤;硝酸钾3-7公斤;过磷酸钙5-10公斤;碳酸铵15-20公斤。碳酸铵必须与土壤混合制成深施球肥。过磷酸钙不能与生石灰混合,会产生化学反应,降低功效。稻田的肥料主要影响鳗鱼,如果定期施用,鱼一般不会有危险。但是,在施肥时,在施肥前必须先将鳗鱼诱入鲤鱼体内。如何在养鳗稻田施用农药?养鳗稻田应选用高效低毒的农药,如甲胺磷(又称多菌灵)、乐果、敌百虫、敌百虫、敌百虫、蝉散、氯氰菊酯(又称克螨、治8)、稻瘟病等。乐果60~75 kg,乐果25%水溶液500次喷雾剂,敌百虫50~150克,落叶粉2%公斤粉2克,二甲咪啶25%水剂100 g,稻瘟净40%乳剂50~50 g。按照规定,它们对鳗鱼无害。然而,一些农药在环境中缓慢消化,其积累和慢性中毒应予以考虑。例如,敌百虫对鱼类毒性低,但在水中降解缓慢,在鱼类中容易积累。因此,在中稻田发生二化螟发生的高峰时,最好是喷洒农药,而不是在水稻生长的早期和后期喷洒农药。喷施时,应先增加水深,稻田水层应保持在6厘米以上。早晨稻草露水时应喷洒粉末,晴天露水干燥后应喷洒水。下雨时不要用药。喷洒时,喷嘴延伸至叶底,自下而上喷洒,尽量喷洒在水稻茎叶上,减少农药落入水中,不提倡混土。当施用有毒杀虫剂时,可将田间水晾干,将鳗鱼吸引到鲤鱼身上,然后施用药物。药力消失后,鳗鱼被注入稻田,游回田野。有时鳗鱼可能要在鱼袋里等很长时间。为了避免缺氧,有必要每隔1-2天将淡水冲入鱼兜。也可以使用补丁应用的方法,即在两天内应用一个字段,在第一天应用字段的前半部分,在第二天应用字段的后半部分。

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