zaibaohudishucaishengchanzhong

，bufennongminyouyuzhuiqiugaochanxinqie，zaiturangyangfenhanliangyihengaodeqingkuangxiarengdaliangshifei，youqishidaliangshiyongdansuhuafei，eryinqidansuguoshengzheng。其症狀一般表現為：瓜類蔬菜植株徒長，易染病害。葉片肥大而濃綠，中下部葉片卷曲，葉柄稍微下垂，葉脈間凹凸不平

，有明顯斑點，隨後葉片變黃

、weinian，guoshijiaoxiao。guocaileishucairuxihongshibiaoxianweizhizhuchengdaosanjiaoxing，jiejianchang，jingshangchuxianhesebandian，yepiandaernonglv
，rouruanyiranbing，yepianjuanqu，xiaoyezhongleilongqi。qitashucaiyibanyizhizhutuchang、葉片肥大濃綠為主。

要(yao)避(bi)免(mian)氮(dan)素(su)過(guo)剩(sheng)症(zheng)的(de)發(fa)生(sheng)，首(shou)先(xian)應(ying)從(cong)思(si)想(xiang)上(shang)引(yin)起(qi)重(zhong)視(shi)，實(shi)行(xing)測(ce)土(tu)施(shi)肥(fei)
，根(gen)據(ju)土(tu)壤(rang)養(yang)分(fen)含(han)量(liang)和(he)作(zuo)物(wu)需(xu)要(yao)，對(dui)氮(dan)磷(lin)鉀(jia)和(he)其(qi)他(ta)微(wei)量(liang)元(yuan)素(su)實(shi)行(xing)合(he)理(li)搭(da)配(pei)科(ke)學(xue)施(shi)用(yong)
，尤(you)其(qi)不(bu)要(yao)盲(mang)目(mu)大(da)量(liang)施(shi)用(yong)氮(dan)肥(fei)。在(zai)養(yang)分(fen)含(han)量(liang)較(jiao)高(gao)的(de)土(tu)壤(rang)上(shang)，提(ti)倡(chang)以(yi)施(shi)用(yong)腐(fu)熟(shu)的(de)農(nong)家(jia)肥(fei)為(wei)主(zhu)
，配(pei)合(he)施(shi)用(yong)適(shi)量(liang)氮(dan)肥(fei)。如(ru)發(fa)現(xian)作(zuo)物(wu)缺(que)鉀(jia)
、缺que鎂mei症zheng狀zhuang，應ying首shou先xian分fen析xi原yuan因yin，若ruo因yin氮dan素su過guo剩sheng引yin起qi缺que素su症zheng，應ying以yi解jie決jue過guo剩sheng為wei主zhu，配pei合he施shi用yong所suo缺que肥fei料liao。對dui已yi發fa現xian氮dan素su過guo剩sheng的de地di塊kuai，在zai地di溫wen高gao時shi可ke加jia大da灌guan水shui量liang緩huan解jie，噴pen施shi適shi量liang助zhu壯zhuang素su，延yan長chang光guang照zhao時shi間jian
，同tong時shi注zhu意yi防fang治zhi蚜ya蟲chong、霜黴病等病蟲害。