小麥揚花-guanjianghouqishengyuduiquebaochanliangzhiguanzhongyao，houqishuifeiguanlibukefangsong。youqiduiyuxiandaigaochanpinzhong，tamendetedianshihouqizengchanqianlida，xudanyejiaoduo。dantongshi，houqishuifeiguanlidefengxianhenandujiaoda，benqiteqingzhuanjiajiuciweinongminpengyoudayijiehuo。

當dang前qian夏xia收shou作zuo物wu冬dong小xiao麥mai進jin入ru後hou期qi生sheng長chang階jie段duan
，正zheng進jin行xing著zhe籽zi粒li灌guan漿jiang成cheng熟shu等deng發fa育yu過guo程cheng。到dao農nong田tian裏li走zou一yi走zou看kan一yi看kan似si乎hu感gan到dao夏xia收shou作zuo物wu的de年nian景jing已yi經jing可ke望wang
，但dan可ke望wang尚shang不bu是shi可ke即ji，現xian在zai離li夏xia收shou作zuo物wu的de收shou獲huo還hai有you一yi段duan關guan鍵jian時shi期qi

，不bu能neng放fang鬆song夏xia收shou作zuo物wu的de後hou期qi水shui肥fei管guan理li。就jiu以yi冬dong小xiao麥mai的de灌guan漿jiang來lai說shuo，這zhe是shi決jue定ding冬dong小xiao麥mai收shou成cheng的de最zui後hou關guan鍵jian時shi期qi。正zheng如ru農nong諺yan所suo述shu： 麥收三不少，穗多穗大籽粒飽。 雖sui然ran麥mai田tian的de穗sui數shu已yi經jing定ding型xing，但dan是shi粒li數shu還hai未wei完wan全quan定ding，至zhi於yu粒li飽bao或huo千qian粒li重zhong的de多duo少shao
，正zheng是shi由you這zhe一yi段duan時shi期qi的de生sheng長chang發fa育yu來lai決jue定ding。這zhe說shuo明ming冬dong小xiao麥mai生sheng長chang雖sui然ran進jin入ru後hou期qi，但dan後hou期qi的de水shui肥fei管guan理li不bu可ke放fang鬆song。它ta對dui產chan量liang的de形xing成cheng很hen重zhong要yao。小xiao麥mai的de籽zi粒li灌guan漿jiang，由you乳ru熟shu階jie段duan到dao成cheng熟shu階jie段duan，應ying保bao持chi一yi定ding綠lv葉ye麵mian積ji才cai有you較jiao高gao的de光guang合he效xiao率lv
，此ci時shi要yao適shi當dang補bu充chong營ying養yang，可ke防fang止zhi葉ye片pian因yin早zao衰shuai而er減jian輕qing粒li重zhong。至zhi於yu施shi肥fei方fang式shi可ke采cai用yong土tu壤rang施shi肥fei，也ye可ke采cai用yong根gen外wai追zhui肥fei的de技ji術shu。

houqishuifeiguanlideyuanzeyaoshimaiqingerding
，jifeiyilvyaozhuifeiguanshui，yefeiyilvyaokongshuikongfei。zhenduixiaomaihouqideshengyutedian，shiyizilixingchengweizhongxin
，baokuokaihuashoujing
、籽zi粒li灌guan漿jiang等deng過guo程cheng，它ta將jiang決jue定ding粒li重zhong和he粒li數shu的de多duo少shao，對dui小xiao麥mai產chan量liang起qi著zhe至zhi關guan重zhong要yao的de作zuo用yong。由you於yu葉ye片pian是shi小xiao麥mai生sheng產chan光guang合he產chan物wu和he進jin行xing蒸zheng騰teng的de器qi官guan，後hou期qi如ru果guo葉ye片pian衰shuai老lao太tai快kuai
，會hui對dui灌guan漿jiang不bu利li；ruguoyepianguowangtanqingwanshunayebuliyugaochan。weici，shuifeiguanlidemubiaoshibaochigenxihuoli，yanchangyepiangongnengqi
，fangzhizaoshuaiyutanqingwanshu。weilecujinguanghechanwuxiangziliyunzhuan，zhengqulizhong，zhenduibutongmaiqingcaiquyixiaguanlicuoshi：

對抽穗期葉色明顯轉淡、群體不大的麥田，可抓緊追施氮肥一次。同時澆灌揚花-灌guan漿jiang水shui。氮dan肥fei的de用yong量liang要yao適shi當dang，可ke以yi補bu施shi少shao量liang氮dan素su，如ru果guo多duo了le會hui導dao致zhi貪tan青qing晚wan熟shu甚shen至zhi倒dao伏fu
，必bi須xu掌zhang握wo恰qia當dang才cai可ke以yi實shi現xian增zeng加jia千qian粒li重zhong和he保bao粒li數shu的de目mu的de。氮dan肥fei品pin種zhong可ke選xuan用yong硫liu銨an、碳銨或尿素。用尿素追肥要提前2天。氮素淨用量每畝不超過1.5～2公斤。

對於群體較大的麥田，為了防止後期幹熱風造成的倒伏，在花後-灌漿期噴施2次濃度含1%的腐植酸液和磷酸二氫鉀（0.2%～0.5%）加尿素（0.5%～1%）的混和液；也可以噴施矽肥和腐殖酸肥液（濃度各為1%左右）。凡葉麵噴施肥料，一般都要噴兩次
，間隔4～5天。這樣既有利於保千粒重又有利於防、抗幹熱風所引起的倒伏問題。

在zai有you灌guan溉gai條tiao件jian的de正zheng常chang麥mai田tian
，視shi土tu壤rang墒shang情qing狀zhuang況kuang，在zai灌guan漿jiang高gao峰feng前qian及ji時shi灌guan溉gai揚yang花hua水shui或huo灌guan漿jiang水shui
，這zhe一yi水shui有you利li於yu小xiao麥mai胚pei乳ru發fa育yu，增zeng大da子zi實shi皮pi和he穎ying果guo，從cong而er增zeng加jia庫ku容rong量liang。

總之，小麥揚花-灌(guan)漿(jiang)的(de)後(hou)期(qi)生(sheng)育(yu)對(dui)於(yu)保(bao)產(chan)量(liang)是(shi)至(zhi)關(guan)重(zhong)要(yao)的(de)。後(hou)期(qi)水(shui)肥(fei)管(guan)理(li)不(bu)可(ke)放(fang)鬆(song)。尤(you)其(qi)是(shi)對(dui)於(yu)現(xian)代(dai)高(gao)產(chan)品(pin)種(zhong)
，它(ta)們(men)的(de)特(te)點(dian)是(shi)後(hou)期(qi)增(zeng)產(chan)潛(qian)力(li)大(da)，後(hou)期(qi)需(xu)氮(dan)也(ye)較(jiao)多(duo)，後(hou)期(qi)水(shui)肥(fei)管(guan)理(li)是(shi)創(chuang)高(gao)產(chan)的(de)關(guan)鍵(jian)。但(dan)是(shi)
，後(hou)期(qi)水(shui)肥(fei)管(guan)理(li)的(de)風(feng)險(xian)和(he)難(nan)度(du)也(ye)較(jiao)大(da)，必(bi)須(xu)拿(na)捏(nie)恰(qia)當(dang)，防(fang)止(zhi)引(yin)起(qi)貪(tan)青(qing)或(huo)早(zao)衰(shuai)，二(er)者(zhe)都(dou)會(hui)導(dao)致(zhi)減(jian)產(chan)。