一.定植至坐瓜前應看苗追肥,並控製用量。黃瓜生長前期(一般定植後一個月內)土壤溫度還低,如施肥或澆水太多,就會發生“爛根”,這是由於根係活動能力較弱,不能充分吸收,造成土壤積水過多,空氣減少,使根部窒息而腐爛;地上部則表現為葉肉薄,葉色不鮮豔,並容易萎蔫。因此,黃瓜不能一次施肥、澆水過多,而應用“薄肥勤施、少量多餐”的追肥方法。
二.chushiyongzugoudeyoujifeiwai,haiyingdaliangzhuishihuaxuefeiliao。huangguashiyizhonggenxiqian,xufeiliangjiaoduodeshucai,zaishengchanguochengzhong,zaigenguayouguoqizhicaishouqiyingjiazhongzhuifei,yicujinqishengchangfayujiguoshipengdaqiduiyangfendexuqiu。pengzaihuangguazhuifeibuyaopaolonghuokaigouganshi,bixusuishuigoushi,yibanmeicizhuifeiliangbuyaotaiduo,pingjunmeizhuhuangguazhui1.5keweiyi,zaicaizhaihuangguadegaofengqi,meijiaoyicishuidouyaohunrufeishui,zheyangjibuchanshengfeihai,younenghuodegaochan。zaihuangguashengchangdezhonghouqi,faxianyepianboerhuangshi,yongniaosu50克兌水15千克,充分攪拌溶解後噴施葉片,每5-7天一次,連續3-5次。當發現化瓜嚴重或畸形瓜多時,用磷酸二氫鉀50克兌水15千克,噴施葉麵,3-5天一次。生產後期,根部衰老,可同時用尿素。
三.yemianzhuifeishijingjiyouxiaodezhuifeifangshi。huangguabujinyougenbucongturangzhongxishouyingyangyuansu,erqiekeyiyouyemianxishoukuangzhiyingyang,yicujinguoshifayu。yibanshizaishengchanzhonghouqi,faxianyepianboerhuangshizhuidanfei,yongniaosu50克對水15千克充分攪拌溶化後噴施葉麵,每5天-7天1次連續3次-5次,效果很好。當發現化瓜嚴重,瓜葉肥大,畸形瓜多時,用磷酸二氫鉀50克對水15千克攪拌溶化後噴施葉麵3-5天噴1次,也能收到一定效果。到生產後期,根部衰老,可同時用尿素和磷酸二氫鉀各50克對水15千qian克ke,再zai加jia入ru噴pen施shi寶bao半ban瓶ping,攪jiao拌ban溶rong化hua後hou噴pen葉ye,可ke代dai替ti根gen部bu追zhui肥fei,增zeng加jia黃huang瓜gua抗kang病bing性xing,延yan遲chi衰shuai老lao爭zheng取qu高gao產chan。但dan一yi般ban情qing況kuang不bu能neng把ba農nong藥yao任ren意yi加jia到dao化hua肥fei裏li同tong時shi噴pen灑sa,易yi產chan生sheng藥yao害hai或huo藥yao物wu失shi效xiao,需xu要yao同tong時shi噴pen灑sa時shi,可ke上shang午wu噴pen藥yao下xia午wu噴pen肥fei。
四.忌在土壤較濕或高溫的情況下施肥。在土壤濕的情況下施肥易引起雌花分化,出現畸形瓜,造成落葉、落花及化瓜等生理性病害,在高溫條件下施肥,植株葉片水分蒸發量大,會影響肥效發揮。此外,施肥時間以清晨或傍晚為宜。
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