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果樹是以果實（種子）為(wei)主(zhu)要(yao)栽(zai)培(pei)目(mu)的(de)的(de)多(duo)年(nian)生(sheng)木(mu)本(ben)或(huo)草(cao)本(ben)植(zhi)物(wu)，其(qi)生(sheng)長(chang)發(fa)育(yu)規(gui)律(lv)和(he)對(dui)養(yang)分(fen)的(de)需(xu)求(qiu)特(te)性(xing)與(yu)其(qi)他(ta)作(zuo)物(wu)存(cun)在(zai)顯(xian)著(zhe)的(de)差(cha)異(yi)，其(qi)特(te)點(dian)主(zhu)要(yao)體(ti)現(xian)在(zai)以(yi)下(xia)幾(ji)個(ge)方(fang)麵(mian)。
第一，高齡長壽，各時期對養分要求不同。
第二，貯藏營養對果樹特別重要。
貯藏營養是果樹等多年生植物在物質分配方麵的自然適應屬性。它可以使植株順利度過不良時期（如寒冬），保bao證zheng下xia一yi個ge年nian周zhou期qi啟qi動dong後hou的de物wu質zhi和he能neng量liang供gong應ying。它ta是shi年nian間jian樹shu體ti生sheng命ming延yan續xu的de物wu質zhi基ji礎chu，如ru果guo貯zhu藏zang營ying養yang匱kui乏fa必bi然ran降jiang低di，更geng會hui影ying響xiang第di二er年nian的de正zheng常chang萌meng芽ya、開花、坐果、新梢生長、根係發生等生長發育，並進一步影響果實膨大、花芽分化等過程。因此，提高樹體的貯藏營養水平，減少無效消耗是果樹豐產、wenchanheyouzhigaoxiaodezhongyaojishuyuanzehezhugongfangxiang。guoshuzhuzangyingyangtexingshiguoshuduishifeideminganxingjiangdi，shifeidezhijiexiaoguojiangdi，zaochengduishifeidebuzhongshi。dantongguoshifeizengjiazhuzangyingyangshuiping，changyuanyingxiangguoshushengchangfayu，duiguoshufengchanwenchanqizhejudazuoyong。
第三，營養生長與生殖生長對養分的激烈競爭。
營ying養yang生sheng長chang與yu生sheng殖zhi生sheng長chang之zhi間jian的de矛mao盾dun貫guan穿chuan於yu果guo樹shu生sheng長chang發fa育yu的de全quan過guo程cheng。營ying養yang生sheng長chang是shi基ji礎chu，生sheng殖zhi生sheng長chang是shi目mu的de，協xie調tiao營ying養yang生sheng長chang與yu生sheng殖zhi生sheng長chang之zhi間jian的de矛mao盾dun是shi果guo樹shu技ji術shu措cuo施shi的de主zhu要yao目mu標biao。施shi肥fei時shi期qi、方法、種類、shuliangdengyeyaoweizheyimudefuwu。shengmingzhouqizhong，youshulianghaodeyingyangshengchangshikaihuajieguodejichu，yincizaiyoujifeichongzudeguoyuankeyishaoshidanfeiduoshilinfei，danzaipinjideshanqiudi，bukehushidanfeideshiyong。youshuxishounenglicha，jiaqianggenwaizhuifeiduiyujiakuaiyingyangshengchangyouzhongyaoyiyi。dangyingyangshengchangjinxingdaoyidingchengduyaojishicujinyouyingyangshengchangxiangshengzhishengchangdezhuanhua，turangshifeiyilin、鉀為主，少施或不施氮肥；yemianshifeizaoqiyidanweizhu，zhonghouqiyilinjiaweizhu，cujinhuayaxingcheng，tizaojieguo。jinrushengguoqihou，shengzhishengchangzhanzhudaodiwei，daliangyangfenyongyukaihuajieguo，jianshaowuxiaoxiaohao；施肥上要氮、磷、鉀配合施用，增加氮和鉀量，滿足果實需要。 
