往年為了便於緩苗,都是在茄子苗定植之前2~3天在苗床上澆一水,這樣基質中水分供應充足,茄子根係生長旺盛,但在搬苗時對根係損傷較大,容易感染病害。所以,茄子在定植前5天不澆水為宜,原因有三:
首(shou)先(xian),由(you)於(yu)茄(qie)子(zi)幼(you)苗(miao)在(zai)基(ji)質(zhi)中(zhong)長(chang)勢(shi)良(liang)好(hao),根(gen)係(xi)活(huo)動(dong)旺(wang)盛(sheng),澆(jiao)水(shui)後(hou)就(jiu)會(hui)造(zao)成(cheng)根(gen)係(xi)的(de)大(da)量(liang)生(sheng)長(chang),這(zhe)樣(yang)根(gen)係(xi)就(jiu)容(rong)易(yi)從(cong)營(ying)養(yang)杯(bei)底(di)部(bu)的(de)透(tou)水(shui)孔(kong)長(chang)出(chu),下(xia)紮(zha)到(dao)杯(bei)底(di)的(de)土(tu)壤(rang)當(dang)中(zhong),以(yi)致(zhi)在(zai)搬(ban)運(yun)幼(you)苗(miao)時(shi)根(gen)係(xi)大(da)量(liang)斷(duan)裂(lie),影(ying)響(xiang)茄(qie)子(zi)的(de)緩(huan)苗(miao),同(tong)時(shi)產(chan)生(sheng)的(de)傷(shang)口(kou)還(hai)容(rong)易(yi)造(zao)成(cheng)土(tu)傳(chuan)病(bing)害(hai)的(de)入(ru)侵(qin),導(dao)致(zhi)茄(qie)子(zi)的(de)根(gen)部(bu)病(bing)害(hai)加(jia)重(zhong)。
qici,buliyuhuanmiao。genxixishoushuifenheyingyangzhuyaoshiyikaogenjianwancheng。zaidingzhizhiqianjiaoshuidaozhigenxishengchangliangda,genjianjiaonen,zaidingzhishigenjiandaliangshoushang,huiyanzhongyingxianggenxidexishuifeinengli,shidingzhihouhuanmiaoshijianyanchang。
再次,在定植茄子前5天內澆水,使得基質中的水分含量增大,增加了營養杯的重量,加大了搬運茄子幼苗的勞動強度。
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