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從(cong)西(xi)紅(hong)柿(shi)定(ding)植(zhi)到(dao)開(kai)花(hua)之(zhi)前(qian)，植(zhi)株(zhu)生(sheng)長(chang)量(liang)小(xiao)，對(dui)氮(dan)肥(fei)的(de)需(xu)求(qiu)量(liang)低(di)，土(tu)壤(rang)中(zhong)基(ji)施(shi)的(de)氮(dan)肥(fei)完(wan)全(quan)能(neng)夠(gou)滿(man)足(zu)西(xi)紅(hong)柿(shi)植(zhi)株(zhu)生(sheng)長(chang)的(de)需(xu)要(yao)，所(suo)以(yi)這(zhe)段(duan)時(shi)期(qi)沒(mei)有(you)必(bi)要(yao)追(zhui)施(shi)氮(dan)肥(fei)。
從cong西xi紅hong柿shi進jin入ru開kai花hua結jie果guo期qi，隨sui著zhe氣qi溫wen的de回hui升sheng，植zhi株zhu的de生sheng長chang速su度du加jia快kuai，生sheng長chang量liang增zeng大da，這zhe時shi要yao注zhu意yi開kai始shi衝chong施shi氮dan肥fei，保bao證zheng西xi紅hong柿shi的de養yang分fen供gong應ying。當dang開kai第di一yi穗sui花hua時shi，可ke以yi每mei畝mu追zhui施shi氮dan肥fei20~25gongjinzuoyou，tongshipeihejiafeideshiyong，yicujinxihongshidezhengchangshengchang。congxihongshidiyisuizuoguodaoxihongshidedisisuizuoguozheduanshijian，yinweiwenduzhujianshenggao，xihongshizhengtengzuoyongjiada，jiaoshuidejiangeshijianzhujianbianduan，suoyimeicichongshidedanfeibunengguoduo，yijianshaodanfeidesuishuiliushi。yekemeicijiaoshuichongshishuirongxingchongshifei，zhuyijianliangshiyongweiyi。
當西紅柿進入采摘期時，對氮的需求量減少，這時可將氮肥的使用量降低到15公斤左右，這樣就可以滿足西紅柿轉色對氮肥的需求，但要注意增加鉀肥的施用量。
