棚栽黃瓜“花打頂”，即(ji)生(sheng)長(chang)點(dian)不(bu)再(zai)生(sheng)長(chang)和(he)伸(shen)長(chang)，頂(ding)端(duan)小(xiao)葉(ye)片(pian)密(mi)集(ji)
，在(zai)很(hen)短(duan)的(de)時(shi)間(jian)內(nei)形(xing)成(cheng)雌(ci)雄(xiong)花(hua)相(xiang)間(jian)的(de)花(hua)簇(cu)
，形(xing)成(cheng)自(zi)封(feng)頂(ding)現(xian)象(xiang)。如(ru)不(bu)及(ji)時(shi)采(cai)取(qu)措(cuo)施(shi)，植(zhi)株(zhu)將(jiang)很(hen)快(kuai)死(si)亡(wang)。
   
　　發生原因 棚內土壤過濕或過幹
，地溫偏低，加上施用了未腐熟的農家肥，或單一過量使用氮素化肥

，造成黃瓜根係發育差，吸收能力弱
，形成“花打頂”。youxiecainongweilezhuiqiugaochan，changshiyongzenggualingdeng，shihuangguatineideneiyuanjisuzenggao，shiyingyangwuzhizhuyaoyunxiangcirui，xingchengcihua，shenzhilianxuchuxianduogecihua，xionghuazetuihua，chengweizhiyoulaoyeerwuxinyedezifengdingzhizhu。pengneizhouyewenchada
，yewenpiandihuozheduanrizhaotiaojianxia
，youliyucihuadexingcheng，ercihuahexionghuadexingchengzexuyaogengduodeyingyangwuzhi
，suoyicihuaxingchengdeguoduo，jiuhuiduiyingyangshengchangchanshengyizhi，chuxian“花打頂”。
   
　　防治方法 水shui分fen供gong應ying要yao靈ling活huo掌zhang握wo，棚peng內nei土tu壤rang表biao麵mian要yao見jian幹gan見jian濕shi，澆jiao足zu定ding植zhi水shui和he緩huan苗miao水shui，定ding植zhi後hou及ji時shi中zhong耕geng
，反fan複fu鬆song土tu
，提ti高gao地di溫wen增zeng加jia土tu壤rang通tong透tou性xing
，促cu進jin根gen係xi發fa育yu，多duo發fa新xin根gen。農nong家jia肥fei要yao充chong分fen腐fu熟shu，均jun勻yun追zhui肥fei，避bi免mian因yin施shi肥fei不bu當dang而er造zao成cheng的de傷shang根gen。避bi免mian過guo高gao追zhui求qiu產chan量liang而er亂luan用yong植zhi物wu調tiao節jie劑ji，使shi用yong後hou已yi出chu現xian症zheng狀zhuang的de，則ze每mei隔ge7天左右噴施1次300~400beidexibaofenliesu。caiquzengguangcuoshi
，fugaiwenshidecaoshanyingzaojiewangai
，jinliangyanchangrizhaoshijian，youtiaojiandekeyiyongdengguangzhaoming。yejiancaiqurengongzengwencuoshi，jinliangjianxiaozhouyewencha，liyuxionghuadexingcheng。