追肥目的有別
chunqiuliangji,shucaizhengchuyuwangshengshengchangjieduan,zhuifeidemudeshijinyibucujinzhizhushengchang。erdongjiduoshushucaidaoleshengchangzhonghouqi,youyujieguoliangjiaoda,zhizhuyingyangxiaohaoguoduo,changshipianruo,shenzhifashengzaoshuai,zaizhezhongqingkuangxia,zhuifeidemudezhuyaoshizengqiangzhizhuchangshi,cujinpengguo,bimiangenxilaohua,yepianshuailao,zhizhuzaoshuai。
追肥量有別
隨(sui)著(zhe)冬(dong)季(ji)到(dao)來(lai),外(wai)界(jie)氣(qi)溫(wen)逐(zhu)漸(jian)下(xia)降(jiang),棚(peng)內(nei)地(di)溫(wen)也(ye)隨(sui)之(zhi)下(xia)降(jiang),對(dui)於(yu)蔬(shu)菜(cai)而(er)言(yan),則(ze)表(biao)現(xian)為(wei)蔬(shu)菜(cai)的(de)莖(jing)葉(ye)生(sheng)長(chang)量(liang)減(jian)少(shao),光(guang)合(he)作(zuo)用(yong)及(ji)蒸(zheng)騰(teng)作(zuo)用(yong)下(xia)降(jiang),根(gen)係(xi)活(huo)力(li)減(jian)弱(ruo),吸(xi)水(shui)吸(xi)肥(fei)能(neng)力(li)下(xia)降(jiang)。這(zhe)與(yu)氣(qi)溫(wen)、地溫較為適宜於蔬菜生長的春秋季節有明顯區別。因此,在冬季追肥時,要改變大量澆水、施肥的做法。
肥料種類有別
春秋季節,氣溫高,地溫也高,衝施一般複合肥對蔬菜根係的影響大多不明顯。而冬季由於氣溫、地(di)溫(wen)都(dou)較(jiao)低(di),加(jia)之(zhi)一(yi)般(ban)複(fu)合(he)肥(fei)溶(rong)化(hua)到(dao)水(shui)中(zhong)又(you)會(hui)進(jin)一(yi)步(bu)降(jiang)低(di)水(shui)溫(wen),衝(chong)施(shi)後(hou)不(bu)但(dan)會(hui)導(dao)致(zhi)地(di)溫(wen)下(xia)降(jiang),對(dui)蔬(shu)菜(cai)根(gen)係(xi)造(zao)成(cheng)危(wei)害(hai),而(er)且(qie)複(fu)合(he)肥(fei)的(de)養(yang)分(fen)利(li)用(yong)率(lv)低(di),因(yin)此(ci),在(zai)冬(dong)季(ji)追(zhui)肥(fei),應(ying)將(jiang)全(quan)水(shui)溶(rong)性(xing)肥(fei)料(liao)和(he)功(gong)能(neng)性(xing)肥(fei)料(liao)作(zuo)為(wei)追(zhui)肥(fei)的(de)主(zhu)打(da)肥(fei)料(liao)。
手機版




