每(mei)年(nian)(nian)3-4月施(shi)(shi)(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)(yong)氮肥(fei)(fei)(fei)(fei)(fei)(fei)，條施(shi)(shi)(shi)(shi)(shi)(shi)于枝條下(xia)方(fang)30-60厘(li)米(mi)寬(kuan)處。根據土(tu)壤PH，選擇酸(suan)性或(huo)堿性形態氮肥(fei)(fei)(fei)(fei)(fei)(fei)。榛(zhen)(zhen)樹(shu)整(zheng)個(ge)生長(chang)發(fa)育(yu)過程(cheng)，氨、磷(lin)、鉀(jia)(jia)是主(zhu)要(yao)(yao)(yao)營(ying)養元(yuan)(yuan)素，農(nong)家肥(fei)(fei)(fei)(fei)(fei)(fei)和化(hua)(hua)肥(fei)(fei)(fei)(fei)(fei)(fei)要(yao)(yao)(yao)合(he)理搭配。秋施(shi)(shi)(shi)(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)(fei)(fei)以施(shi)(shi)(shi)(shi)(shi)(shi)腐熟農(nong)家肥(fei)(fei)(fei)(fei)(fei)(fei)為(wei)(wei)(wei)主(zhu)，生長(chang)季(ji)節以施(shi)(shi)(shi)(shi)(shi)(shi)化(hua)(hua)肥(fei)(fei)(fei)(fei)(fei)(fei)即多元(yuan)(yuan)復合(he)肥(fei)(fei)(fei)(fei)(fei)(fei)(氮、磷(lin)、鉀(jia)(jia))為(wei)(wei)(wei)主(zhu)。秋施(shi)(shi)(shi)(shi)(shi)(shi)農(nong)家肥(fei)(fei)(fei)(fei)(fei)(fei)，在(zai)9～10月進行，就(jiu)樹(shu)齡確定施(shi)(shi)(shi)(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)(fei)(fei)量(liang)(liang)(liang)(liang)(liang)，一(yi)(yi)(yi)般一(yi)(yi)(yi)株(zhu)施(shi)(shi)(shi)(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)(fei)(fei)20～25 公斤，結果期樹(shu)要(yao)(yao)(yao)增(zeng)加施(shi)(shi)(shi)(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)(fei)(fei)量(liang)(liang)(liang)(liang)(liang)。使用(yong)(yong)(yong)(yong)(yong)多元(yuan)(yuan)復合(he)肥(fei)(fei)(fei)(fei)(fei)(fei)。磷(lin)肥(fei)(fei)(fei)(fei)(fei)(fei)可以在(zai)一(yi)(yi)(yi)年(nian)(nian)內任何時(shi)(shi)間施(shi)(shi)(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)(yong)，最好條施(shi)(shi)(shi)(shi)(shi)(shi)于樹(shu)的(de)(de)滴水線下(xia)面。鉀(jia)(jia)肥(fei)(fei)(fei)(fei)(fei)(fei)可以與氮肥(fei)(fei)(fei)(fei)(fei)(fei)一(yi)(yi)(yi)起(qi)施(shi)(shi)(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)(yong)。施(shi)(shi)(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)(yong)一(yi)(yi)(yi)次2年(nian)(nian)有(you)效(xiao)。其它(ta)重要(yao)(yao)(yao)的(de)(de)養分(fen)有(you)硼(peng)和鐵(tie)，需(xu)要(yao)(yao)(yao)時(shi)(shi)，一(yi)(yi)(yi)次施(shi)(shi)(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)(yong)千分(fen)之(zhi)一(yi)(yi)(yi)硼(peng)酸(suan)或(huo)硼(peng)砂，用(yong)(yong)(yong)(yong)(yong)量(liang)(liang)(liang)(liang)(liang)為(wei)(wei)(wei)每(mei)株(zhu)榛(zhen)(zhen)子(zi)樹(shu)120克(ke)(ke)(ke)(ke)。硫酸(suan)鉀(jia)(jia)優于氯化(hua)(hua)鉀(jia)(jia)。在(zai)缺磷(lin)的(de)(de)土(tu)壤中(zhong)，施(shi)(shi)(shi)(shi)(shi)(shi)用(yong)(yong)(yong)(yong)(yong)一(yi)(yi)(yi)次通常2-3年(nian)(nian)有(you)效(xiao)。施(shi)(shi)(shi)(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)(fei)(fei)時(shi)(shi)間：第1次于4月初，第2次于6月下(xia)旬(xun)，要(yao)(yao)(yao)結合(he)澆(jiao)水.施(shi)(shi)(shi)(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)(fei)(fei)量(liang)(liang)(liang)(liang)(liang)：幼樹(shu)(4年(nian)(nian)生以內)，株(zhu)施(shi)(shi)(shi)(shi)(shi)(shi)150～400 克(ke)(ke)(ke)(ke)，樹(shu)齡大增(zeng)加施(shi)(shi)(shi)(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)(fei)(fei)量(liang)(liang)(liang)(liang)(liang)。施(shi)(shi)(shi)(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)(fei)(fei)方(fang)法主(zhu)要(yao)(yao)(yao)采用(yong)(yong)(yong)(yong)(yong)環(huan)狀(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)肥(fei)(fei)(fei)(fei)(fei)(fei)。環(huan)狀(zhuang)施(shi)(shi)(shi)(shi)(shi)(shi)化(hua)(hua)肥(fei)(fei)(fei)(fei)(fei)(fei)，距樹(shu)干有(you)一(yi)(yi)(yi)定距離，均勻(yun)撒肥(fei)(fei)(fei)(fei)(fei)(fei)，深5～10 厘(li)米(mi)，后覆土(tu)。當榛(zhen)(zhen)子(zi)葉片中(zhong)N的(de)(de)含(han)量(liang)(liang)(liang)(liang)(liang)低于1.5%時(shi)(shi)，N的(de)(de)用(yong)(yong)(yong)(yong)(yong)量(liang)(liang)(liang)(liang)(liang)為(wei)(wei)(wei)每(mei)棵(ke)樹(shu)500克(ke)(ke)(ke)(ke)；P的(de)(de)含(han)量(liang)(liang)(liang)(liang)(liang)低于0.14時(shi)(shi)，磷(lin)的(de)(de)用(yong)(yong)(yong)(yong)(yong)量(liang)(liang)(liang)(liang)(liang)為(wei)(wei)(wei)每(mei)棵(ke)樹(shu)500克(ke)(ke)(ke)(ke)，K的(de)(de)含(han)量(liang)(liang)(liang)(liang)(liang)低于0.5 時(shi)(shi)，硫酸(suan)鉀(jia)(jia)的(de)(de)用(yong)(yong)(yong)(yong)(yong)量(liang)(liang)(liang)(liang)(liang)為(wei)(wei)(wei)每(mei)棵(ke)樹(shu)1000克(ke)(ke)(ke)(ke)。當榛(zhen)(zhen)子(zi)葉片中(zhong)N的(de)(de)含(han)量(liang)(liang)(liang)(liang)(liang)在(zai)1.5-2%時(shi)(shi)，N的(de)(de)用(yong)(yong)(yong)(yong)(yong)量(liang)(liang)(liang)(liang)(liang)為(wei)(wei)(wei)每(mei)棵(ke)樹(shu)4500克(ke)(ke)(ke)(ke)；P的(de)(de)含(han)量(liang)(liang)(liang)(liang)(liang)在(zai)0.14-0.16%時(shi)(shi)，P的(de)(de)用(yong)(yong)(yong)(yong)(yong)量(liang)(liang)(liang)(liang)(liang)為(wei)(wei)(wei)每(mei)棵(ke)樹(shu)300克(ke)(ke)(ke)(ke)，K的(de)(de)含(han)量(liang)(liang)(liang)(liang)(liang)在(zai)0.5-0.8%時(shi)(shi)，K的(de)(de)用(yong)(yong)(yong)(yong)(yong)量(liang)(liang)(liang)(liang)(liang)為(wei)(wei)(wei)每(mei)棵(ke)樹(shu)750克(ke)(ke)(ke)(ke)。

1．榛子樹施肥之秋施基肥

是指(zhi)從秋季果(guo)實(shi)采集后(hou)至土(tu)壤(rang)結(jie)凍前(qian)(9～10月(yue)份)施(shi)入有(you)機(ji)肥(fei)(fei)(fei)(fei)(fei)料。基(ji)(ji)肥(fei)(fei)(fei)(fei)(fei)以糞肥(fei)(fei)(fei)(fei)(fei)、堆肥(fei)(fei)(fei)(fei)(fei)、綠(lv)肥(fei)(fei)(fei)(fei)(fei)和人糞、尿為(wei)主，是較(jiao)長(chang)時間供給樹體多種養分(fen)(fen)的(de)基(ji)(ji)礎肥(fei)(fei)(fei)(fei)(fei)料。同時，要(yao)加(jia)入適量(liang)的(de)氮(dan)、磷、鉀復合(he)肥(fei)(fei)(fei)(fei)(fei)。增施(shi)有(you)機(ji)肥(fei)(fei)(fei)(fei)(fei)料，可(ke)提高(gao)(gao)土(tu)壤(rang)孔隙度，疏松土(tu)壤(rang)，加(jia)速土(tu)肥(fei)(fei)(fei)(fei)(fei)融合(he)，改(gai)善土(tu)壤(rang)中(zhong)水(shui)、肥(fei)(fei)(fei)(fei)(fei)、氣(qi)、熱狀況，有(you)利于微(wei)生物活動(dong)。特別是早(zao)秋施(shi)基(ji)(ji)肥(fei)(fei)(fei)(fei)(fei)，有(you)機(ji)物腐爛(lan)分(fen)(fen)解時間較(jiao)長(chang)，不僅礦質化程度高(gao)(gao)，到(dao)春季可(ke)及時供根(gen)系吸收(shou)利用；而(er)且(qie)能促進(jin)花(hua)(hua)芽分(fen)(fen)化，提高(gao)(gao)花(hua)(hua)芽質量(liang)，增強樹體的(de)越冬性；還有(you)利于榛(zhen)園保墑，提高(gao)(gao)地溫，防止根(gen)際凍傷(shang)。如(ru)果(guo)秋季來(lai)不及施(shi)基(ji)(ji)肥(fei)(fei)(fei)(fei)(fei)，翌年(nian)春季萌芽前(qian)也可(ke)春施(shi)基(ji)(ji)肥(fei)(fei)(fei)(fei)(fei)。但(dan)是春季施(shi)基(ji)(ji)肥(fei)(fei)(fei)(fei)(fei)，肥(fei)(fei)(fei)(fei)(fei)效發(fa)揮較(jiao)慢，常(chang)不能滿(man)足榛(zhen)樹早(zao)春生長(chang)需要(yao)，后(hou)期又導致(zhi)枝梢再次生長(chang)，影(ying)響花(hua)(hua)芽分(fen)(fen)化和果(guo)實(shi)發(fa)育。

2．榛子樹施肥之追肥

追肥既能(neng)使(shi)當年(nian)(nian)樹(shu)(shu)體(ti)強(qiang)壯，獲(huo)得(de)高產(chan)、優質果(guo)(guo)實，又能(neng)給來年(nian)(nian)生(sheng)(sheng)(sheng)長(chang)結果(guo)(guo)打下良(liang)好的(de)基礎，是榛(zhen)樹(shu)(shu)增產(chan)不可缺少的(de)施肥環節(jie)。榛(zhen)樹(shu)(shu)一般追肥兩次：第一次在5月下旬(xun)至(zhi) 6月上旬(xun)。此時正值果(guo)(guo)實子房膨大(da)期(qi)(qi)(qi)和新梢生(sheng)(sheng)(sheng)長(chang)期(qi)(qi)(qi)；第二次為7月上旬(xun)至(zhi)中旬(xun)。因(yin)6月上旬(xun)至(zhi)7月中上旬(xun)，為堅(jian)果(guo)(guo)發育(yu)迅(xun)速及花(hua)芽(ya)開始分化期(qi)(qi)(qi)，此期(qi)(qi)(qi)間追肥對果(guo)(guo)實生(sheng)(sheng)(sheng)長(chang)發育(yu)、花(hua)芽(ya)分化、枝條充實極(ji)為重要。另(ling)外(wai)，根據樹(shu)(shu)體(ti)生(sheng)(sheng)(sheng)長(chang)發育(yu)的(de)需(xu)要，亦(yi)可葉面噴(pen)肥。