由(you)於(yu)春(chun)季(ji)稻(dao)田(tian)的(de)旱(han)澇(lao)基(ji)礎(chu)各(ge)有(you)不(bu)同(tong),尤(you)其(qi)是(shi)去(qu)年(nian)秋(qiu)季(ji),有(you)些(xie)地(di)方(fang)稻(dao)田(tian)幹(gan)旱(han),有(you)些(xie)地(di)方(fang)卻(que)出(chu)現(xian)洪(hong)澇(lao),所(suo)以(yi)今(jin)年(nian)春(chun)季(ji)就(jiu)必(bi)須(xu)因(yin)地(di)製(zhi)宜(yi)確(que)定(ding)春(chun)灌(guan)措(cuo)施(shi)。
如果頭年秋季由於洪澇,直到春季尚有積水超過15厘li米mi的de農nong田tian,應ying當dang往wang外wai排pai水shui。因yin為wei這zhe已yi經jing超chao過guo泡pao水shui層ceng的de深shen度du。對dui於yu這zhe樣yang的de稻dao田tian,如ru果guo隻zhi帶dai水shui耙pa田tian而er不bu翻fan耕geng,可ke等deng多duo餘yu的de積ji水shui排pai出chu之zhi後hou,采cai用yong齒chi高gao重zhong量liang大da的de水shui耙pa輪lun,以yi多duo次ci縱zong橫heng水shui耜si代dai替ti翻fan耕geng;有的需要翻耕整地。
如(ru)果(guo)從(cong)去(qu)年(nian)秋(qiu)天(tian)到(dao)今(jin)年(nian)春(chun)季(ji),稻(dao)田(tian)一(yi)直(zhi)處(chu)於(yu)幹(gan)旱(han)狀(zhuang)態(tai),可(ke)以(yi)采(cai)取(qu)兩(liang)種(zhong)不(bu)同(tong)的(de)方(fang)法(fa)灌(guan)田(tian)。對(dui)於(yu)秋(qiu)天(tian)已(yi)經(jing)翻(fan)過(guo)的(de)耕(geng)地(di),可(ke)以(yi)直(zhi)接(jie)進(jin)行(xing)灌(guan)溉(gai)。沒(mei)有(you)條(tiao)件(jian)的(de)地(di)方(fang),隻(zhi)有(you)等(deng)待(dai)春(chun)季(ji)引(yin)水(shui)或(huo)擔(dan)水(shui)進(jin)行(xing)灌(guan)溉(gai)了(le)。如(ru)果(guo)是(shi)去(qu)年(nian)秋(qiu)天(tian)沒(mei)有(you)翻(fan)耕(geng)的(de)農(nong)田(tian),春(chun)季(ji)則(ze)不(bu)要(yao)立(li)即(ji)灌(guan)溉(gai),首(shou)先(xian)要(yao)進(jin)行(xing)春(chun)翻(fan)整(zheng)地(di)。但(dan)可(ke)以(yi)將(jiang)水(shui)貯(zhu)在(zai)蓄(xu)水(shui)坑(keng)或(huo)者(zhe)低(di)窪(wa)處(chu),等(deng)春(chun)翻(fan)整(zheng)地(di)結(jie)束(shu)後(hou),再(zai)將(jiang)貯(zhu)水(shui)引(yin)入(ru)稻(dao)田(tian)進(jin)行(xing)泡(pao)田(tian)。
當dang水shui源yuan比bi較jiao緊jin缺que時shi,可ke采cai取qu噴pen灌guan種zhong稻dao的de方fang法fa。即ji把ba經jing過guo催cui了le芽ya的de稻dao種zhong進jin行xing直zhi播bo,再zai利li用yong噴pen灌guan機ji澆jiao水shui,不bu旱han不bu澆jiao,澆jiao水shui一yi般ban在zai中zhong午wu或huo晚wan上shang。另ling外wai,稻dao田tian噴pen灌guan還hai可ke以yi改gai善shan田tian間jian小xiao氣qi候hou,調tiao整zheng田tian間jian溫wen度du和he溫wen度du。當dang然ran,噴pen灌guan的de最zui大da特te點dian是shi節jie水shui、增產效果顯著,在水稻整個生長期內,每畝水稻隻需用水100多立方米,並能增產15%左右。
受shou過guo洪hong澇lao災zai害hai的de稻dao田tian,它ta的de地di下xia水shui必bi然ran要yao抬tai高gao,所suo以yi在zai春chun灌guan時shi,可ke以yi采cai取qu濕shi潤run灌guan溉gai的de方fang法fa,基ji本ben上shang不bu建jian立li地di水shui層ceng,使shi水shui稻dao在zai生sheng長chang過guo程cheng中zhong稻dao根gen有you疏shu鬆song多duo氧yang的de土tu層ceng,保bao證zheng健jian壯zhuang生sheng長chang。
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