塑料暖棚在蔬菜種植、yufeirouzhuheyangjizhongdexianzhujingjixiaoyidedaoyanzheng,bingzuoweiyizhongxinjishujinxingletuiguangheyingyong。danmuqianyongsuliaonuanpengyangrouniudehaibuduo。zaihanlengdedongjihezaochun,rouniuzaibaozhengyingyangwuzhidejichushang,zuixuyaodeshiyangguangheshiyidewenduname,zenyangcainengjiejuezhelianggewentine?zuihaodebanfashiyongsuliaonuanpengsiyangrouniu。yinweisuliaonuanpengneidewendubiyibanniushegao10℃左右。據試驗,在喂相同飼料的情況下,通過3個月(90天)的飼養對比,在暖棚內飼養的肉牛平均日增重1175克;而在一般牛舍飼養的肉牛因氣溫過低,不但沒有增重,而且平均日減重125克ke。因yin此ci,在zai寒han冷leng的de冬dong季ji和he早zao春chun,用yong塑su料liao暖nuan棚peng育yu肥fei肉rou牛niu,經jing濟ji效xiao益yi十shi分fen顯xian著zhu,值zhi得de大da力li推tui廣guang。那na麼me,怎zen樣yang進jin行xing塑su料liao暖nuan棚peng的de設she計ji和he搭da建jian呢ne?
一般的牛舍按司頂形狀可分為單坡式、雙越式、平頂式及平拱式;按牛舍牆壁的設置可分為敞棚式、開敞式、半開敞式和封閉式。塑料暖棚的搭建可根據自己養肉牛的數量、規gui模mo和he現xian有you牛niu舍she的de實shi際ji情qing況kuang來lai確que定ding。可ke將jiang敞chang棚peng式shi或huo半ban開kai敞chang式shi牛niu舍she用yong塑su料liao薄bo膜mo封feng閉bi敞chang開kai部bu分fen利li用yong陽yang光guang熱re能neng和he牛niu自zi身shen體ti溫wen散san發fa的de熱re量liang提ti高gao舍she內nei溫wen度du,實shi現xian暖nuan棚peng飼si養yang肉rou牛niu。暖nuan棚peng應ying建jian在zai背bei風feng向xiang陽yang、dishigaobingqieganzaochu。ruozaitingyuanzhong,yaokaobeiqiang,shiqizuobeichaonan,yidijiacaiguangshijianheguangzhaoqiangdu,youliyutigaoshewen,qiebukejianzainanqianggen。suoyongsuliaobomokexuanyongbaisetoumingdenongmo,hou0.02毫米-0.05毫料。棚架材料要因地製宜,可用木杆、竹竿、鉛絲、鋼筋等。防寒材料用草簾、棉簾、麻袋等均可。暖棚舍頂類型可采用平頂式、單坡式或平拱式。實踐證明,以聯合式暖棚(基本為雙坡式,但北牆高於南牆,故舍頂不對稱)為好,其優點是扣棚麵積小,光照充足,不積水,易保溫,省工省料。
塑料棚的搭建首先確定適宜的扣棚時間,根據無霜的長短靈活掌握。在我國,南方地區可晚些,北方地區可早些。一般的扣棚時間是11月份至翌年的3月份。扣棚時,塑料薄膜應繃緊拉平,四邊封嚴,不透風。夜間和陰雨風雪天氣,要用草簾、棉(mian)簾(lian)或(huo)麻(ma)袋(dai)等(deng)物(wu)將(jiang)暖(nuan)棚(peng)蓋(gai)嚴(yan)以(yi)保(bao)溫(wen),並(bing)及(ji)時(shi)清(qing)除(chu)棚(peng)麵(mian)和(he)積(ji)霜(shuang)和(he)積(ji)雪(xue),以(yi)保(bao)證(zheng)光(guang)照(zhao)效(xiao)果(guo)良(liang)好(hao),舍(she)內(nei)的(de)糞(fen)便(bian)每(mei)天(tian)要(yao)定(ding)時(shi)清(qing)除(chu)掉(diao),以(yi)保(bao)證(zheng)暖(nuan)棚(peng)內(nei)的(de)清(qing)潔(jie)衛(wei)生(sheng)和(he)幹(gan)燥(zao)。
為(wei)保(bao)證(zheng)棚(peng)仲(zhong)裁(cai)內(nei)空(kong)氣(qi)新(xin)鮮(xian),暖(nuan)棚(peng)必(bi)須(xu)設(she)置(zhi)換(huan)氣(qi)孔(kong)或(huo)換(huan)氣(qi)窗(chuang),有(you)條(tiao)件(jian)時(shi)要(yao)裝(zhuang)上(shang)換(huan)氣(qi)扇(shan)或(huo)換(huan)氣(qi)窗(chuang),以(yi)排(pai)除(chu)過(guo)多(duo)的(de)水(shui)分(fen),維(wei)持(chi)舍(she)內(nei)適(shi)宜(yi)溫(wen)度(du)和(he)濕(shi)度(du)。一(yi)般(ban)進(jin)氣(qi)孔(kong)設(she)在(zai)暖(nuan)棚(peng)南(nan)牆(qiang)二(er)分(fen)之(zhi)一(yi)處(chu)的(de)上(shang)部(bu)或(huo)塑(su)料(liao)棚(peng)麵(mian)上(shang)。每(mei)天(tian)應(ying)通(tong)風(feng)換(huan)氣(qi)2次,每次10分鍾左右。育肥的肉牛在棚內飼養密度以每頭牛占用5平方米左右為宜。在暖棚內最好實行一牛一樁、一牛一槽、短繩拴係的辦法,牛吃完草料後,即可靠樁或槽臥下休息、反芻、曬太陽。在這樣的環境中,肉牛快速長肉增膘是必然的。
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