測土配方施肥不隻是通過化驗室分析結果，開個“方子”就可以“抓藥”。不同作物的肥料田間試驗是了解肥料施用效果、作物生長情況和養分吸收過程及結果最直接、zuiyouxiaodefangfa，shikaizhancetupeifangshifeigongzuodejichu
，shizhidingzuowushifeifanganhejianyideshouyaoyiju，shijianlizuowushifeifenqudeqianti。feiliaotianjianshiyanyeshiyanjiu、篩選、評價土壤養分測試方法，建立不同測試方法施肥指標的惟一基礎。因此，田間試驗是測土配方施肥的基礎。

　　cetubushicedingmeigenonghudemeigedikuaideyangfenhanliang，ershizaiyidingdefanweineixuanzeyixiedaibiaoxingdedikuai
，cedingyangfenhanliang，geichuzuowushifeifangan，qitaleisidedikuaicanzhaodaibiaoxingdikuaideshifeifanganjinxing

，suoyibukenengyemeiyoubiyaocedingmeigenonghudemeigedikuaideturangyangfen。

　　shiyanshejizaifeiliaoshiyanzhongzhanzhongyaodiwei。yaopingjiapeifangfeidexiaoguo，huojianlizuowuchanliangyushifeiliangzhijiandedingliangguanxi，doushejishiyanshejiwenti。yaopingjiafeiliaodexiaoguo，tongchangxuanyongshengchanzhongpubianshiyongdeyizhonghuojizhongfeiliaohuoyemianfeizuoweibijiaoduixiang，keyizaizengsheyigebushifeichuli。yaojianliyizhongzuowudechanliangyushifeiliangzhijiandedingliangguanxi，zainiyanjiudefeiliaozhongleimingquehou，xuquedingmeigeyanjiuyinsudeshuiping

，ranhoujinxingshidangdezuhe
，keyihuodeshiyanfangan。ruoyanjiuyinsudeshuipingxuanqubudang，kenenghuicuoguozuijiadeshifeidianhuoshishiyancunzaijiaodadewucha；若選取的因素水平過多或組合不當，會增加試驗的工作量。

　　試驗設計的方法很多，包括完全設計法

、正交設計法
、均(jun)勻(yun)設(she)計(ji)法(fa)和(he)回(hui)歸(gui)設(she)計(ji)法(fa)等(deng)。在(zai)肥(fei)料(liao)試(shi)驗(yan)中(zhong)，可(ke)以(yi)根(gen)據(ju)需(xu)要(yao)選(xuan)用(yong)適(shi)宜(yi)的(de)試(shi)驗(yan)設(she)計(ji)方(fang)法(fa)。建(jian)立(li)作(zuo)物(wu)產(chan)量(liang)與(yu)施(shi)肥(fei)量(liang)之(zhi)間(jian)的(de)數(shu)量(liang)關(guan)係(xi)是(shi)定(ding)量(liang)施(shi)肥(fei)的(de)基(ji)礎(chu)。