作zuo物wu從cong播bo種zhong到dao采cai收shou，吸xi收shou的de養yang分fen是shi相xiang對dui固gu定ding的de
，而er各ge種zhong養yang分fen之zhi間jian也ye有you一yi定ding的de比bi例li。不bu管guan是shi肥fei料liao總zong量liang施shi用yong過guo多duo，或huo者zhe某mou一yi養yang分fen施shi量liang過guo多duo，對dui作zuo物wu生sheng長chang都dou沒mei有you好hao處chu，而er且qie造zao成cheng浪lang費fei。

feiliaotebieshihuaxuefeiliaoshiyongguoduo，huishiturangrongyezhongyangfennongduguogao
，zheduizhongzifayashibulide。guogaodeyangfennongduhuizhuoshaozhongzi

，shanghaiyoumiao，shizuowushengchangshoudaoyizhi，jiuxiangzuowuzhongzaiyanfenjiaogaodeyanzihuaturangshangyiyang。zaizuowushengchangqi，danfeishiyongguoliang，huishizuowuchuxiantuchang、貪(tan)青(qing)晚(wan)熟(shu)

，容(rong)易(yi)倒(dao)伏(fu)並(bing)招(zhao)致(zhi)病(bing)蟲(chong)害(hai)侵(qin)襲(xi)，最(zui)終(zhong)導(dao)致(zhi)空(kong)秕(bi)率(lv)增(zeng)加(jia)
，千(qian)粒(li)重(zhong)下(xia)降(jiang)
，產(chan)量(liang)反(fan)而(er)降(jiang)低(di)。磷(lin)肥(fei)施(shi)得(de)過(guo)多(duo)對(dui)作(zuo)物(wu)生(sheng)長(chang)也(ye)不(bu)利(li)，不(bu)僅(jin)營(ying)養(yang)期(qi)縮(suo)短(duan)，成(cheng)熟(shu)期(qi)提(ti)前(qian)
，出(chu)現(xian)早(zao)衰(shuai)
，而(er)且(qie)容(rong)易(yi)造(zao)成(cheng)鋅(xin)、鐵、鎂等營養元素缺乏，影響作物品質。鉀肥或微量元素施用過量，也對作物生長也同樣不利。

因此，肥料並不是施得越多越好。施多了，不僅浪費
，而且對作物造成傷害。