現xian在zai不bu少shao菜cai農nong反fan映ying說shuo，他ta們men種zhong植zhi蔬shu菜cai的de大da棚peng中zhong，連lian年nian大da量liang使shi用yong有you機ji肥fei，土tu壤rang中zhong的de有you機ji質zhi含han量liang很hen高gao，已yi經jing滿man足zu蔬shu菜cai生sheng長chang的de需xu要yao
，可ke是shi因yin為wei連lian年nian使shi用yong化hua肥fei量liang較jiao大da，土tu壤rang的de鹽yan漬zi化hua程cheng度du也ye較jiao高gao，那na麼me對dui於yu這zhe樣yang的de土tu壤rang

，菜cai農nong應ying該gai如ru何he改gai良liang呢ne？

以(yi)水(shui)壓(ya)鹽(yan)是(shi)最(zui)為(wei)快(kuai)速(su)有(you)效(xiao)的(de)降(jiang)低(di)土(tu)壤(rang)中(zhong)鹽(yan)離(li)子(zi)濃(nong)度(du)，降(jiang)低(di)土(tu)壤(rang)鹽(yan)漬(zi)化(hua)程(cheng)度(du)的(de)方(fang)法(fa)。據(ju)壽(shou)光(guang)市(shi)土(tu)壤(rang)肥(fei)料(liao)檢(jian)測(ce)與(yu)研(yan)究(jiu)中(zhong)心(xin)提(ti)供(gong)的(de)數(shu)據(ju)顯(xian)示(shi)
，土(tu)壤(rang)中(zhong)的(de)全(quan)鹽(yan)含(han)量(liang)超(chao)標(biao)主(zhu)要(yao)是(shi)因(yin)為(wei)氮(dan)
、磷、鉀使用過量導致的
，有的大棚土壤中速效鉀的含量超過2000毫克/千克，僅此一項就導致土壤中的全鹽含量超標
，如果再加上土壤中含有的其他各種礦質元素，土壤中的全鹽含量甚至超過3.0克/qianke，xiangzheyangdeturang，cainongyingzaixiajikongpengqishi，tongguojiaodashuidefangfa，jiangturangzhongguoduodeyanfenjinxinglinxi，yijiangditurangzhongdeyanlizinongdu。youyuturangduigezhongyanlizidexifunenglijiaoqiang
，suoyihaiyaozhuyigenjuturangzhongdequanyanhanliang，quedingyishuiyayandecishu。

jianshaoturanghanyanliangdelingyigefangfashiliyongdapengdekongpengqi
，zhongzhiyichalvfei
，rumuxudeng，liyonglvfeiduiyanfendexishoulaijiangditurangzhongdequanyanhanliang，jianqingturangdeyanzihua，jiangturangzhongdeyanfenkongzhizaishiyishucaishengchangdefanweizhinei。zaishucaizhongzhiqian，cainonghaikeyijianglvfeifanyadaoturangzhong
，yizengjiaturangzhongyoujizhidehanliang，zengqiangturangduiyanfendehuanchongnengli，cujinturangdegailiang。

jiangdituranghanyanliangdedisangefangfajiushijianshaowujiyuansufeiliaodeshiyongliang。xiangyixieyanzihuabiaoxianqingweideturang，cainongkeyizaishiyongwujifeiliaoshi，genjuturangzhongdanlinjiahanliangdegaodi，quedingheshideshifeiliang
，ruturangzhongdedanlinjiahanliangjiaogao
，cainongkejiangshifeiliangjiangdidaozhengchangyongliangde2/3-3/4之間，以促進蔬菜根係對礦質元素的吸收利用，防止礦質元素在土壤中積累，減輕土壤的鹽漬化程度。