鎮壓過晚 麥mai田tian鎮zhen壓ya是shi控kong製zhi麥mai苗miao旺wang長chang行xing之zhi有you效xiao的de方fang法fa之zhi一yi。一yi般ban農nong戶hu在zai早zao春chun看kan到dao麥mai苗miao旺wang長chang,就jiu立li即ji采cai取qu鎮zhen壓ya控kong製zhi旺wang長chang,這zhe是shi不bu正zheng確que的de。因yin為wei如ru果guo播bo種zhong過guo早zao麥mai田tian,有you可ke能neng冬dong前qian就jiu已yi拔ba節jie,此ci時shi進jin行xing鎮zhen壓ya,就jiu會hui折zhe斷duan節jie間jian,減jian少shao成cheng穗sui,所suo以yi鎮zhen壓ya控kong旺wang要yao視shi苗miao情qing進jin行xing,不bu可ke盲mang目mu鎮zhen壓ya。
深耕斷根 有的農戶在小麥起身期深鋤7~10limilaiduangenkongchang,zheshibukexuede。yinweicishiduangen,jiuhuidaozhizhizhugenxijianshao,ruoguanligenbushang,houqiyidaofu。youqiduiyouyuboliangdaerzaochengquntiguoda、根係發育較弱的麥田更不宜深中耕,可通過鎮壓控製主莖和大蘖徒長控旺轉壯。
割青和啃青 對(dui)於(yu)冬(dong)前(qian)旺(wang)長(chang)麥(mai)田(tian),不(bu)少(shao)農(nong)民(min)用(yong)鐮(lian)刀(dao)割(ge)青(qing)或(huo)用(yong)牲(sheng)畜(chu)啃(ken)青(qing)來(lai)控(kong)旺(wang)防(fang)凍(dong),這(zhe)也(ye)是(shi)一(yi)種(zhong)錯(cuo)誤(wu)的(de)做(zuo)法(fa)。因(yin)為(wei)啃(ken)青(qing)或(huo)割(ge)青(qing)後(hou),葉(ye)片(pian)部(bu)分(fen)或(huo)全(quan)部(bu)被(bei)去(qu)掉(diao),大(da)大(da)削(xue)弱(ruo)了(le)養(yang)料(liao)的(de)製(zhi)造(zao)和(he)積(ji)累(lei),直(zhi)接(jie)影(ying)響(xiang)了(le)小(xiao)麥(mai)的(de)生(sheng)長(chang)發(fa)育(yu),表(biao)現(xian)為(wei)穗(sui)分(fen)化(hua)開(kai)始(shi)晚(wan),成(cheng)熟(shu)期(qi)延(yan)遲(chi),穗(sui)少(shao)、粒少、粒li秕bi。另ling外wai,啃ken青qing或huo割ge青qing造zao成cheng植zhi株zhu機ji械xie損sun傷shang,呼hu吸xi作zuo用yong增zeng強qiang,養yang分fen消xiao耗hao增zeng加jia,水shui分fen蒸zheng騰teng加jia劇ju,分fen蘖nie節jie含han糖tang量liang減jian少shao,抗kang凍dong能neng力li減jian弱ruo,容rong易yi遭zao受shou凍dong害hai。因yin此ci,要yao禁jin止zhi啃ken青qing或huo割ge青qing。
盲目翻種 小(xiao)麥(mai)是(shi)一(yi)種(zhong)自(zi)我(wo)調(tiao)節(jie)能(neng)力(li)比(bi)較(jiao)強(qiang)的(de)作(zuo)物(wu)。實(shi)踐(jian)證(zheng)明(ming),旺(wang)長(chang)麥(mai)田(tian)若(ruo)越(yue)冬(dong)期(qi)遇(yu)到(dao)嚴(yan)重(zhong)凍(dong)害(hai),隻(zhi)要(yao)分(fen)蘖(nie)節(jie)不(bu)死(si),翌(yi)年(nian)返(fan)青(qing)後(hou)仍(reng)可(ke)以(yi)長(chang)出(chu)新(xin)的(de)分(fen)蘖(nie)並(bing)成(cheng)穗(sui),也(ye)可(ke)以(yi)獲(huo)得(de)較(jiao)好(hao)的(de)產(chan)量(liang)。而(er)如(ru)果(guo)對(dui)旺(wang)長(chang)麥(mai)田(tian)在(zai)越(yue)冬(dong)前(qian)翻(fan)種(zhong),考(kao)慮(lv)到(dao)造(zao)墒(shang)、機械整地、機械播種、增加播量、施肥等投入,翌年小麥畝收益將顯著低於不耕翻麥田。因此,對旺長麥田,不提倡翻種。
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