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src="http://tyunfile.71360.com/UpLoadFile/2019/12/20/16/637124547789654272_ynzd169_7950802.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8dfh2my" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/12/20/16/637124547789654272_ynzd169_7950802.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="drols2m" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>云南省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>昆明蔬菜大棚建設(shè),大棚</p><p><span>***更新：</span>2020-06-30 16:18:47</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="lf3b3c3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">云南姚前達(dá)溫室大棚工程有限公司</a></p><p><span>聯(lián)系人：</span>姚前達(dá)</p><p><span>郵箱: </span>805320623@qq.com</p><p><span>電話: </span>13629667022</p><p><span>傳真: </span>0871_66011811</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0871-66011811</p><p><span>地址: </span>云南省昆明市呈貢區(qū)殷聯(lián)社區(qū)練尾棚村C3號(hào)大棚</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="dqn27ir" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="yxztpj0" class="box"><p><p> 聚氯乙烯(PVC)棚膜保溫性、透光性、耐候性好，柔軟，易造型，適合做為溫室、大棚及中小拱棚的外覆蓋材料。缺點(diǎn)是薄膜比重大(1.3克/立方厘米)，一定重量的棚膜覆蓋面積較聚乙烯膜(PE)減少1/3，成本增加;低溫下變硬、脆化，高溫下易軟化、松弛;助劑析出后，膜面吸塵，影響透光，殘膜不能燃燒處理，因有氯氣產(chǎn)生。聚氯乙烯棚膜的主要產(chǎn)品有: </p> <p> ①普通PVC棚膜制膜過(guò)程中不加入耐老化助劑，使用期*為4-6個(gè)月，可生產(chǎn)一季作物，昆明蔬菜大棚建設(shè)，浪費(fèi)能源，增加用工和投資，也在逐步被淘汰。 </p> <p> ②PVC防老化膜在原料中加入耐老化助劑經(jīng)壓延成膜。有效使用期達(dá)8-10個(gè)月，有良好的透光性、保溫性和耐候性，是在大棚、中小拱棚上覆蓋的主要材料，多用于春提前秋延后栽培。 </p> <p> ③PVC無(wú)滴防老化膜(PVC雙防棚膜)同時(shí)具有防老化和流滴特性，透光性和保溫性好，無(wú)滴性可持續(xù)4-6個(gè)月，安全使用壽命達(dá)12-18個(gè)月，應(yīng)用較廣:，是高效節(jié)能型日光溫室優(yōu)先的覆蓋材料，做大棚覆蓋材料效果更好。 </p> <p> ④PVC耐候無(wú)滴防塵膜除具有耐候流滴性能外，薄膜表面經(jīng)處理，增塑剖析出量少，昆明蔬菜大棚建設(shè)，吸塵較輕，提高了透光率，對(duì)日光溫室，昆明蔬菜大棚建設(shè)、大棚冬春栽培更為有利。大棚過(guò)低時(shí)積雪不易下滑，易積水，容易造成超載塌棚。昆明蔬菜大棚建設(shè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明蔬菜大棚建設(shè),大棚" src="http://tyunfile.71360.com/UpLoadFile/2019/12/20/16/637124547789654272_ynzd169_7950802.jpg"></div><p> 大棚內(nèi)的土壤容易出現(xiàn)鹽堿化，究其原因主要有4點(diǎn)。 </p> <p> ①大量施用化學(xué)肥料。因化學(xué)肥料一般是有用部分被蔬菜吸收利用，而不能被吸收利用的部分作為“副作用”殘留，并積聚在土壤中。 </p> <p> ②土壤中硝化作用產(chǎn)生硝酸鹽，也可積累。 </p> <p> ③由于大棚內(nèi)不受降雨影響，每次澆水量也小，土壤中的肥料成分很少向下層土壤中淋失而造成鹽類積累。 </p> <p> ④大棚內(nèi)溫度相對(duì)較高，土壤水分蒸發(fā)量大，所以肥料中的鹽分（農(nóng)家肥分解后也有部分變成無(wú)機(jī)鹽分）借毛細(xì)管水上升到表層積聚。例如，有些大棚在稍干旱的情況下，土表有白色鹽類析出。鑒于以上原因的頻發(fā)，目前逐步推廣無(wú)土栽培模式，利用有機(jī)質(zhì)作為植物生長(zhǎng)的載體，既不會(huì)造成土壤重茬也不會(huì)造成地下土壤的肥料污染。 </p> <p> 光： </p> <p> 由于棚膜和棚架的遮擋作用，棚內(nèi)的光照弱于外界。對(duì)于一些強(qiáng)光照作物種植，可能會(huì)徒長(zhǎng)和不結(jié)果，而對(duì)一些弱光照作物，可能還要加蓋遮陽(yáng)網(wǎng)。云南鮮花大棚大棚兩側(cè)肩高1.2~1.5米為好，過(guò)低影響高桿和爬秧蔬菜的生長(zhǎng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明蔬菜大棚建設(shè),大棚" src="http://tyunfile.71360.com/UpLoadFile/2019/12/20/16/637124547788717582_ynzd169_6921560.jpg"></div><p> 性能指標(biāo)如下(一)： </p> <p> 鋼架大棚造價(jià)組成主要包括大棚骨架、薄膜、防蟲(chóng)網(wǎng)、卷膜器、卷膜桿、人工安裝費(fèi)、運(yùn)費(fèi)等，所以不同的組成，不同的廠家，不同的要求等都會(huì)使價(jià)格隨之而變。 </p> <p> 1.大棚的透光性能 </p> <p> 大棚是采光建筑，因而透光率是評(píng)價(jià)大棚透光性能的一項(xiàng)**基本指標(biāo)。透光率是指透進(jìn)大棚內(nèi)的光照量與室外光照量的百分比。大棚透光率受大棚透光覆蓋材料透光性能和大棚骨架陰影率的影響，而且隨著不同季節(jié)太陽(yáng)輻射角度的不同，大棚的透光率也在隨時(shí)變化。大棚透光率的高低就成為作物生長(zhǎng)和選擇種植作物品種的直接影響因素。一般，連棟塑料大棚在50%~60%，玻璃大棚的透光率在60%~70%，日光大棚可達(dá)到70%以上。 </p><p> 智能大棚的作用是將智能化控制系統(tǒng)應(yīng)用到大棚種植上，利用**技術(shù)的生物模擬技術(shù)，模擬出**適合棚內(nèi)植物生長(zhǎng)的環(huán)境，采用溫度、濕度、CO2、光照度傳感器等感知大棚的各項(xiàng)環(huán)境指標(biāo)，并通過(guò)微機(jī)進(jìn)行數(shù)據(jù)分析，由微機(jī)對(duì)棚內(nèi)的水簾、風(fēng)機(jī)、遮陽(yáng)板等設(shè)施實(shí)施監(jiān)控，從而改變大棚內(nèi)部的生物生長(zhǎng)環(huán)境。 </p> <p> <br /> </p> <p> 比較人工的控制來(lái)說(shuō)，智能控制較大的好處就是能夠相對(duì)恒定的控制大棚內(nèi)部的環(huán)境，對(duì)于環(huán)境要求比較高的植物來(lái)說(shuō)，更能避免因?yàn)槿藶橐蛩囟斐缮a(chǎn)損失。 </p> <p> 相對(duì)生產(chǎn)來(lái)說(shuō)，將智能化控制系統(tǒng)應(yīng)用到大棚生產(chǎn)以后，產(chǎn)量與質(zhì)量比人工控制的大棚都有極大的提高，對(duì)于不同的種植品種而言，提高產(chǎn)量與質(zhì)量相對(duì)不同，對(duì)于檔次較高的經(jīng)濟(jì)作物來(lái)說(shuō)，生產(chǎn)效率可以提高30%以上。 </p> <p> 相對(duì)運(yùn)行成本來(lái)的核算，對(duì)于有一定規(guī)模的種植企業(yè)來(lái)說(shuō)，極大的降低了勞動(dòng)力成本，設(shè)備的投入與運(yùn)行，可以完全由節(jié)約下來(lái)的勞動(dòng)力成本中核算出來(lái)，使用時(shí)間越長(zhǎng)，光節(jié)約的勞動(dòng)力成本就是一筆巨大的利潤(rùn)。大棚不適宜太寬.否則棚頂面平，易積水、雪，棚膜的固定也困難。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明蔬菜大棚建設(shè),大棚" src="http://tyunfile.71360.com/UpLoadFile/2019/11/9/11/637088950547173081_ynzd169_2519974.jpg"></div><p> 久陰驟睛后的管理 </p> <p> 長(zhǎng)時(shí)間的連陰天氣，好幾天揭不開(kāi)草簾，特別是大雪過(guò)后，天氣突然轉(zhuǎn)晴，若菜農(nóng)急于將大棚草簾完全揭開(kāi)，此時(shí)氣溫迅速上升，空氣濕度降低很快，葉片蒸騰加快，而地溫較低，根系活動(dòng)弱，吸收能力很低，很容易造成葉片生理性水分失調(diào)，導(dǎo)致植株萎蔫甚至死亡。在天氣轉(zhuǎn)晴后，注意及時(shí)通風(fēng)，但通風(fēng)口不能開(kāi)得太大，以防止溫度驟變對(duì)植株造成影響。2-3天后待植株逐漸適應(yīng)再轉(zhuǎn)入正常的揭蓋管理。揭開(kāi)草簾后，若發(fā)現(xiàn)蔬菜出現(xiàn)萎蔫現(xiàn)象，應(yīng)立即蓋上草簾，等葉片恢復(fù)后再揭開(kāi)，反復(fù)數(shù)次直到不再萎蔫。不使用卷簾機(jī)的菜農(nóng)可以放花簾，隔一個(gè)拉一個(gè)避免光照太強(qiáng)。發(fā)現(xiàn)苗子萎蔫，可在萎蔫的苗子上噴清水或1％的葡萄糖水，盡快恢復(fù)植株長(zhǎng)勢(shì)。大棚的組成是用竹木桿、水泥桿、輕型鋼管或管材等材料做骨架，覆蓋塑料薄膜而成為拱圓形的料棚。保山養(yǎng)豬大棚</p><p style="text-indent:25px">溫室大棚具有一定環(huán)境調(diào)控設(shè)備.昆明蔬菜大棚建設(shè)</p><p> 建議菜農(nóng)朋友通過(guò)以下措施來(lái)增加棚內(nèi)光照： </p> <p> 1.連陰天時(shí)也要盡量揭開(kāi)保溫被，利用散射光使作物充分接受光照，為了保證棚內(nèi)溫度，拉保溫被時(shí)間應(yīng)比晴天晚0.5-1個(gè)小時(shí)，下午放棚時(shí)間要比晴天早0.5-1個(gè)小時(shí)； </p> <p> 2.及時(shí)清掃棚膜，提高棚膜透光率，可在棚面上設(shè)置布條，利用風(fēng)吹布條給棚膜除塵，方法簡(jiǎn)單易行，并可將棚膜上的大部分灰塵清掃干凈，同時(shí)要選擇質(zhì)量棚膜，減少棚膜內(nèi)面的結(jié)露，減少對(duì)透光率的影響；3.大棚后墻懸掛反光幕，可有效增加棚內(nèi)光照，促進(jìn)光和積累，但是要注意反光幕的懸掛高度。有條件的菜農(nóng)也可通過(guò)在大棚內(nèi)安裝補(bǔ)光燈來(lái)增加光照。 </p> <p> 大棚內(nèi)溫度的高低直接影響蔬菜能否正常生長(zhǎng)，特別是夜間溫度過(guò)低時(shí)，植株很容易出現(xiàn)冷害、凍害，嚴(yán)重的導(dǎo)致蔬菜死棵。 </p> <p> 1.建議菜農(nóng)在棚膜外加蓋兩層草簾，上下層草簾呈品字交錯(cuò)排布，比較低下鋪一層舊薄膜，以保持草簾干燥；2.冬季地溫低，菜農(nóng)在定植蔬菜時(shí)應(yīng)起壟定植，增加地面的見(jiàn)光面積，儲(chǔ)蓄熱量，并鋪設(shè)白色地膜提溫； </p> <p> 3.做好大棚前臉的防凍工作，大棚前臉時(shí)棚內(nèi)**容易大生凍害的地方，菜農(nóng)可以單獨(dú)給大棚前臉“開(kāi)小灶”——在前臉處再加一層1米高的薄膜或廢舊草簾，不*可以保溫，還可以防止前臉滴水，減少病害的發(fā)生。昆明蔬菜大棚建設(shè)</p><p style="text-indent:25px">云南姚前達(dá)溫室大棚工程有限公司一直專注于農(nóng)業(yè)設(shè)施研發(fā)、規(guī)劃、設(shè)計(jì)、施工于一體的專業(yè)技術(shù)型企業(yè)。公司實(shí)力雄厚，技術(shù)專業(yè)，施工快捷，可根據(jù)當(dāng)?shù)貧夂颦h(huán)境、土質(zhì)、種植模式，因地制宜設(shè)計(jì)建設(shè)符合當(dāng)?shù)氐臏厥掖笈铩９就瞥龅娜律鷳B(tài)工程設(shè)計(jì)方案，提出了生態(tài)餐飲、生態(tài)洗浴、生態(tài)超市、生態(tài)公園以及生態(tài)陽(yáng)光房等綠色健康概念。，是一家農(nóng)業(yè)的企業(yè)，擁有自己**的技術(shù)體系。目前我公司在職員工達(dá)到11~50人人，是一個(gè)有活力有能力有創(chuàng)新精神的高效團(tuán)隊(duì)。公司業(yè)務(wù)范圍主要包括：[ "溫室大棚施工", "溫室大棚設(shè)計(jì)", "大棚施工", "大棚設(shè)計(jì)" ]等。公司奉行顧客至上、質(zhì)量為首、的經(jīng)營(yíng)宗旨，深受客戶好評(píng)。公司憑著雄厚的技術(shù)力量、飽滿的工作態(tài)度、扎實(shí)的工作作風(fēng)、良好的職業(yè)道德，樹(shù)立了優(yōu)良的[ "溫室大棚施工", "溫室大棚設(shè)計(jì)", "大棚施工", "大棚設(shè)計(jì)" ]形象，贏得了社會(huì)各界的信任和認(rèn)可。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/448851.html</p></div></div></div></div></div><div id="uskczbq" class="page-right twoColRt"><div id="ztq3ac9" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="swyqsjy" 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