henduozhongzhijiucaidecainongzaiweijiucaipeitushi，renweicanliudelaogenbuhuiyingxiangxingendemengfaheshengchang
，suoyimeiyoujinxingtigenjiuzhijiepeitule。bizherenweizhezhongzuofabuliyujiucaixingendemengfaheshengchang。

因yin為wei韭jiu菜cai經jing過guo幾ji年nian的de生sheng長chang

，老lao根gen不bu斷duan死si亡wang
，新xin根gen會hui逐zhu漸jian上shang移yi，此ci時shi若ruo不bu剔ti除chu老lao根gen，新xin根gen接jie觸chu土tu壤rang的de機ji會hui就jiu逐zhu漸jian減jian少shao
，自zi然ran會hui影ying響xiang新xin根gen對dui營ying養yang和he水shui分fen的de吸xi收shou。而er且qie老lao根gen的de存cun在zai還hai會hui使shi韭jiu菜cai分fen蘖nie減jian少shao，導dao致zhi產chan量liang大da幅fu度du下xia降jiang。如ru剔ti除chu韭jiu菜cai老lao根gen，不bu僅jin可ke使shi新xin根gen吸xi收shou水shui肥fei能neng力li增zeng強qiang，還hai可ke使shi其qi分fen蘖nie增zeng多duo
，增zeng加jia產chan量liang。

在韭菜萌發前，用鐵鍁在韭菜根際土壤挖深
、寬各6limizuoyoudegou，jiangmeicongzhuzhongjiandeturangtichu
，shendudadaogenbu，shizhiluchugenjing
，tongshitichukusidegenniehexixiaodefennie。jiangwachudetutanyuxingjianliangshai，ranhounielongjiucaigenjing
，tianruxitumaihao。tiantushi
，kejiarushiliangdecaomuhui，yifangzhigenqu。

lingwai，weijiucaipeitukeyongsharangtuhuoyuguomiaodemiaochuangtu。peitukeqidaoweijiucaizhuifeidezuoyong。weijiucaipeituyidingyaozaijiucaigenximengfaqianjinxing
，peitudehouduyaosuixingendegaoduerding
，yibanyi3~4厘米為宜。