草苫“品”字形覆蓋法,即在覆蓋草苫時,在棚麵上呈“品”字形擺放,其中兩個草苫在下,中間預留20~30厘米的空隙(也可無空隙,但要增加草苫數量),待dai底di層ceng草cao苫shan覆fu蓋gai完wan畢bi後hou,再zai在zai每mei兩liang個ge草cao苫shan中zhong間jian加jia蓋gai一yi個ge草cao苫shan,以yi增zeng強qiang棚peng室shi的de整zheng體ti保bao溫wen效xiao果guo。此ci法fa覆fu蓋gai草cao苫shan,既ji方fang便bian人ren工gong拉la放fang草cao苫shan,又you適shi合he使shi用yong卷juan簾lian機ji拉la放fang草cao苫shan。
傳統的草苫覆蓋法,多為上麵草苫壓蓋下麵草苫,除了保溫效果不及“品”字zi形xing覆fu蓋gai法fa外wai,而er且qie由you於yu傳chuan統tong覆fu蓋gai法fa是shi將jiang草cao苫shan連lian接jie在zai一yi塊kuai,兩liang個ge草cao苫shan之zhi間jian重zhong合he麵mian積ji小xiao,一yi旦dan遇yu到dao大da風feng,還hai易yi被bei逐zhu個ge刮gua起qi。另ling外wai,傳chuan統tong覆fu蓋gai法fa僅jin適shi合he於yu人ren工gong拉la放fang單dan個ge草cao苫shan,不bu適shi合he使shi用yong卷juan簾lian機ji整zheng體ti拉la放fang草cao苫shan。(注:卷簾機通過卷杆把所有草苫一塊上卷,草苫采用傳統覆蓋法覆蓋,使用卷簾機拉起後,易出現傾斜,危險係數增大。)
草苫 “品”字形覆蓋法的具體操作流程可分以下幾步:第一步,布設固定鋼絲。為了防止草苫下滑脫落,需在棚室後牆上沿東西方向布設一條固定鋼絲,將草苫一頭固定在鋼絲上。方法:先在棚室後牆的東西兩側,埋設深50limidedimao,ranhoubagangsiyitoushuanzaidimaokoushang,lingyitouzaiyongjinxianjilajinjike。dierbu,baifangcaoshan。genjupengshidechangduhecaoshandeguige,quedingshiyongcaoshandeshuliang。erhoubasuoyoucaoshanyiyibaifangzaipengshidehouqiangshang,daiyong。yibanqingkuangxia,kuanduyue1.6米的新草苫,兩個成年人從棚室東牆或西牆上便可將草苫抬放到棚室後牆上。這兩年,很多地區開始使用2.5~3米mi寬kuan的de加jia寬kuan草cao苫shan,這zhe種zhong草cao苫shan較jiao重zhong,不bu便bian於yu人ren工gong抬tai放fang,菜cai農nong可ke以yi使shi用yong小xiao型xing吊diao車che,從cong棚peng室shi的de後hou麵mian一yi一yi將jiang草cao苫shan吊diao放fang上shang去qu。第di三san步bu,覆fu蓋gai草cao苫shan。在zai草cao苫shan按an照zhao順shun序xu擺bai放fang到dao棚peng室shi後hou牆qiang上shang後hou,先xian用yong鐵tie絲si將jiang草cao苫shan的de一yi頭tou固gu定ding在zai東dong西xi方fang向xiang的de鋼gang絲si上shang,再zai一yi一yi把ba草cao苫shan沿yan著zhe棚peng麵mian滾gun放fang下xia來lai,呈cheng“品”字形擺放。假若人工拉放草苫,宜提前把拉繩放在草苫下麵;若(ruo)使(shi)用(yong)卷(juan)簾(lian)機(ji)拉(la)放(fang)草(cao)苫(shan),在(zai)草(cao)苫(shan)擺(bai)放(fang)調(tiao)整(zheng)好(hao)後(hou),將(jiang)其(qi)下(xia)端(duan)固(gu)緊(jin)在(zai)卷(juan)杆(gan)上(shang),而(er)後(hou)開(kai)動(dong)卷(juan)簾(lian)機(ji),試(shi)驗(yan)一(yi)下(xia)拉(la)放(fang)效(xiao)果(guo)。若(ruo)草(cao)苫(shan)出(chu)現(xian)傾(qing)斜(xie),應(ying)先(xian)停(ting)止(zhi)卷(juan)簾(lian)機(ji),再(zai)進(jin)行(xing)調(tiao)整(zheng),以(yi)防(fang)發(fa)生(sheng)意(yi)外(wai)事(shi)故(gu)。
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