第二是高溫障礙。大薑苗期不耐高溫，在20-23℃時生長最適宜
，超過26℃則生長受阻，超過35℃huizaochengdajiangganyeshenzhizhizhusiwang。youqishixiawuliangdianzuoyoudegaowenqiangguang，jianghuizhijiedaozhijiangyagankusiwang，zhixinshengyepianjixing
，houlaichangchudeyepianbunengzhengchangshenzhan。weijinxingzheyindedajiangyepiandeyejianheyeyuanduoyougankuhuanghuadeqingkuang，dajiang“挽辮子”的情況發生率明顯增加。

disanshijiaoshuishifeibudang。dajiangdeyepianweipizhenxing，shishuihouyixingchengliangcejuanquchengguanzhuang。erdaozhiyepianshishuideyuanyintongchangshigenxishoushanghuoturangqueshui。zaochenggenxishoushangdeyuanyinyouyicixingshifeiguoduoshaogen、澆(jiao)水(shui)過(guo)大(da)或(huo)降(jiang)雨(yu)後(hou)排(pai)水(shui)不(bu)及(ji)時(shi)漚(ou)根(gen)等(deng)。根(gen)係(xi)受(shou)傷(shang)後(hou)
，吸(xi)收(shou)能(neng)力(li)大(da)大(da)降(jiang)低(di)，水(shui)分(fen)不(bu)能(neng)滿(man)足(zu)白(bai)天(tian)葉(ye)片(pian)蒸(zheng)騰(teng)的(de)需(xu)要(yao)，葉(ye)片(pian)會(hui)自(zi)然(ran)收(shou)縮(suo)卷(juan)曲(qu)。尤(you)其(qi)是(shi)近(jin)期(qi)正(zheng)值(zhi)麥(mai)收(shou)前(qian)後(hou)，溫(wen)度(du)高(gao)
，光(guang)照(zhao)強(qiang)
，降(jiang)雨(yu)少(shao)，空(kong)氣(qi)濕(shi)度(du)小(xiao)，水(shui)分(fen)蒸(zheng)發(fa)強(qiang)烈(lie)，極(ji)容(rong)易(yi)導(dao)致(zhi)細(xi)胞(bao)缺(que)水(shui)
，葉(ye)片(pian)不(bu)能(neng)正(zheng)常(chang)伸(shen)出(chu)。要(yao)注(zhu)意(yi)及(ji)時(shi)澆(jiao)水(shui)
，保(bao)證(zheng)合(he)適(shi)的(de)土(tu)壤(rang)濕(shi)度(du)，避(bi)免(mian)幹(gan)旱(han)。