一、除膜培土。當土豆的地上部的莖稈和葉片達到30厘米左右的高度,土豆現蕾前後,塊莖開始膨大時,外界的氣溫穩定在30℃時shi,要yao及ji時shi撤che掉diao上shang麵mian覆fu蓋gai的de地di膜mo。在zai撤che掉diao地di膜mo後hou,要yao及ji時shi拔ba除chu壟long間jian的de雜za草cao,並bing在zai土tu豆dou根gen部bu培pei土tu兩liang次ci。通tong過guo培pei土tu可ke以yi提ti高gao土tu豆dou產chan量liang,防fang止zhi土tu豆dou塊kuai莖jing青qing皮pi病bing的de發fa生sheng。
二、澆(jiao)水(shui)施(shi)肥(fei)。土(tu)豆(dou)塊(kuai)莖(jing)膨(peng)大(da)需(xu)要(yao)充(chong)足(zu)的(de)水(shui)肥(fei)供(gong)應(ying),當(dang)塊(kuai)莖(jing)有(you)核(he)桃(tao)大(da)小(xiao)時(shi)可(ke)結(jie)合(he)澆(jiao)水(shui)追(zhui)肥(fei),土(tu)豆(dou)屬(shu)於(yu)喜(xi)鉀(jia)性(xing)作(zuo)物(wu),對(dui)鉀(jia)肥(fei)的(de)需(xu)求(qiu)量(liang)較(jiao)大(da)。在(zai)澆(jiao)水(shui)時(shi)畝(mu)追(zhui)施(shi)氮(dan)鉀(jia)肥(fei)20公斤,隔10天再追肥一次,連續追肥兩次。當遇到連續幹旱天氣時要注意及時澆水,防止土壤幹旱影響塊莖膨大。
三、fangzhihaichong。tudoujinrushengchangzhonghouqi,zhuyaochonghaiyouyachongheqicaoliangzhonghaichong。yachongyiweihaiyepian,xishitudouyepiandezhiye,bingqiehaijirongyichuanbotudoubingdubing,mingxianyingxiangtudoudechanliang。kexuanyongbichonglin800倍液噴霧防治,每隔7tianyongyaoyici,lianxuyongyaoliangci。qicaoshitudoushengchanzhongyizhongchangjianhaichong,zhuyaokenyaotudoukuaijing,zaochengchanliangxiajiang,shangpinxingbiancha,yingxiangzhongzhishouyi。fangzhifangfashi,xuanyongxinliulinguangen,meimudiyongyaoliangwei1~1.5公斤,在傍晚前後結合澆水灌根,可起到明顯的防治效果。
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