近年來在番茄生產中,各地都有發現“臍腐病”dezhengzhuang。cizhengdebiaoxianshizaiqieguopengdaqi,youyuguoshiqibuxiangxia,jianbudaotaiyangdebufenyansebianhe,youdeganku,youdefulan,duichanliangyingxianghenda,pinzhigengshitanbushangle。在分析番茄臍腐病的發生條件時,人們發現施肥不當與“臍腐病”的出現有著明顯關係。
guoneiwaideyanjiuyijingmingquefanqieqifubingshifanqieshengliquegaiyanzhongsuoyinqidecishengzhengzhuang。fanqiequegaibingzaochengfulandetedingbuweishizaiguoqibufen。youyuzhelishizhiwuzhengtengzuoyongzuiruodebuwei,ergaizaitineideyunshuzhuyaokaozhengtenglali,yincigaiyunshubudaoqibuzaochengqibuquegaizuiyanzhong。
congmuqiandeshifeixianzhuangkan,zaifanqieshengchanzhongpubiancunzaizheshaoshihuobushiyoujifei,erdankaoshihuafeiqiuzengchandepianxiang,erzaihuafeishiyongshang,youchuxianpianshizhongshidanfei,shaoshilinjiafeidengzhongweiliangyuansudeyingyangshihengwenti,zheshizaochengfanqieqifubingjinnianlaipinfanfashengdewaizaiyuanyin。
調整施肥、預防“臍腐病”發生,還要談談番茄的營養特點:qiyi,fanqiechanlianggao,xufeiliangda,shuyuwuxianshengchangleixing,fanqiedeguoshicaishouqichang,suizhecaishouyangfenbuduanxiechu,xuyaobiancaishou,bianbuchongyangfen,cainengmanzubuduankaihuajieguodexuyao。qier,fanqieduijia、鈣、鎂的需求量比較大,尤其是在果實膨大期。番茄對這幾種主要養分元素吸收量的大小排列順序為鉀>鈣>氮>磷>鎂。正因為番茄有以上的營養需求特點,所以在施肥上應該注意以下幾點:
1.重視苗床施肥做到“胎裏富”,最好施用有機肥加化肥。化肥的施用要控氮增加磷肥的比例,尤其磷肥品種以選用普鈣或鈣鎂磷肥為優。
2.基ji肥fei深shen施shi,有you機ji肥fei與yu無wu機ji肥fei結jie合he,在zai不bu施shi有you機ji肥fei的de情qing況kuang下xia,化hua肥fei品pin種zhong不bu一yi定ding選xuan擇ze高gao濃nong度du複fu合he肥fei,更geng不bu一yi定ding選xuan擇ze高gao塔ta造zao粒li高gao氮dan複fu合he肥fei,而er要yao選xuan擇ze單dan質zhi氮dan肥fei加jia普pu鈣gai磷lin肥fei,鉀jia肥fei用yong硫liu酸suan鉀jia或huo氯lv化hua鉀jia都dou可ke。酸suan性xing土tu地di區qu的de磷lin肥fei選xuan擇ze“鈣鎂磷肥”為佳。
3.追肥主要施用氮鉀肥,注意肥水結合,追肥次數分第一果膨大期的催果肥;第二、三穗果膨大期的壯果肥。追施3~4次。
4.進(jin)入(ru)盛(sheng)果(guo)期(qi)後(hou),根(gen)係(xi)衰(shuai)弱(ruo)吸(xi)肥(fei)能(neng)力(li)下(xia)降(jiang),可(ke)以(yi)采(cai)用(yong)根(gen)外(wai)噴(pen)肥(fei)的(de)方(fang)法(fa),噴(pen)施(shi)磷(lin)酸(suan)二(er)氫(qing)鉀(jia),硝(xiao)酸(suan)鈣(gai),硼(peng)砂(sha)和(he)尿(niao)素(su)等(deng)成(cheng)分(fen)的(de)水(shui)溶(rong)液(ye),有(you)利(li)於(yu)後(hou)期(qi)壯(zhuang)株(zhu)壯(zhuang)果(guo),減(jian)少(shao)臍(qi)腐(fu)病(bing)的(de)發(fa)生(sheng)。
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