旱地小麥
指在幹旱、半ban幹gan旱han地di區qu依yi靠kao自zi然ran降jiang水shui栽zai培pei小xiao麥mai。這zhe類lei地di區qu小xiao麥mai全quan生sheng育yu期qi降jiang水shui少shao,缺que乏fa灌guan溉gai條tiao件jian,小xiao麥mai生sheng長chang全quan靠kao自zi然ran降jiang水shui,其qi產chan量liang的de高gao低di與yu生sheng長chang年nian度du降jiang水shui多duo少shao及ji降jiang水shui的de適shi時shi程cheng度du關guan係xi密mi切qie。中zhong國guo的de旱han地di小xiao麥mai主zhu要yao分fen布bu在zai東dong北bei西xi部bu、華北北部、西北、內蒙古以及青藏高原。這些地區小麥全生育期降水為150~250毫米,如果田地製宜地采用相應的耕作栽培措施,旱地小麥也能獲得較好收成。
農田建設 handixiaomaiduofenbuzaishuituliushiheturangfengshidiqu,gaohaonongtianjianshe,fangzhishuituliushitigaoxushangkanghannengli,cainengwenchanfengchan。qiulingquhehanyuandi,poduzai25°以上者,應退耕還林、還牧,植樹種草,增加植被,減少水土流失。坡度在25°yixiadeshanpodikeyizhongmai,yanshanpodenggaoxianhengxianggengzuo,jianchengshuipingtitian。huanpodihuohanyuandi,zezaiyandenggaoxianfangengshi,jiashenjiakuangoulong,binghengxiangxiuzhutudang,shitiankuaixingchengxiaoqu,jianchenglongzuoqutian,zengjialanxuyushuinengli。titianyangengbujinyaopaijindashi,erqieyaozhongcaoguyan,fangzhiyandikuata。titianpingzhenghou,rugengcengshengtuguoduo,kejieheshengengzengshiyoujifei,yijiasuturangaohuatigaodili。diduanpodudadeshidangfenkuaihuzheng,anzhaoxiaoping、大不平方式,分層修成水平梯田。風蝕地區要種草植樹,修築防護林帶,以利於防風固沙,涵養水源,改善生態環境。
耕作蓄水 深耕可破除犁底層,加深耕層,改善土壤通透性,增加蓄水保墒能力。深度一般以23~26厘米為宜,耕層宜逐年加風避免一次過深導致表層生土過多,影響當年小麥生長。
中國北方冬麥區的旱地小麥生長期間多處於旱季,降水量少。而麥收後休閑期間雨水較氮約占全年降水的60%以上,深層可把這個時期的雨水蓄積在土中以供下茬小麥利用,這是奪取旱地小麥豐產的關鍵。通常在2米深的小麥根係活動層內,其有效儲水量可達250毫米以上,能夠補充小麥生育期內雨水不足,發揮"伏雨春用"作用,可以確保穩產增收。深耕必須結合耙、mobaoshang,jianshaobiaocengturangshuifenzhengfa。fuqianyaoqiangshishengeng,fuzhongduoliduopa,liqiuhouzeduopashaoli,boqianwuyuzhipabuli。chunmaiqurudongshiyaojinxingturangzhenya,yiyasuitukuai,jianshaozhengfa;早春當地表化凍3~5厘米時頂淩耙地,以消除土壤板結,防旱保墒。風多蒸發量大的春麥區,可實行免耕、少耕以及深鬆之、耙耱地等耕作方法。
輪作施肥 合理輪作與增施肥料可以維持土壤營養平衡、tiaojigezhongyangfendeleijihexiaohao,huifubingtigaodili。zhongguobeifangbufenhandidongxiaomaishixingxiaxian,quebaoyiyinianshuweizhudezhongzhifangshi,keyicujindilihuifuheyouxiaoxushui。xiaomailianzuoshijian,dong、春小麥均以2~3年為限不宜過長,否則不利於培肥地力。適當地擴種一些菌錯、豌豆、小扁豆、毛葉菩於、油榮等與小麥輪作,是培肥地力的有效方法。東北春麥區多以大豆作小麥前作;黃土高原早地冬麥區則實行小麥、豌豆輪作。增施肥料應以有機肥和化肥相結合;guanchedifeiweizhu,zhuifeiweifudeyuanze。zaodidongxiaomaizaiboqianyongyoujifeihehuafeizuodifeihuozhongfei,junyiyicishenshi,jinliangjianshaofenqishiyong,yibimianyinkezaoshifeieryingxiangfeixiao。handichunxiaomaidifeizeyijieheqiugengshishenshi。
種植技術與田間管理 旱(han)地(di)小(xiao)麥(mai)要(yao)特(te)別(bie)重(zhong)視(shi)培(pei)育(yu)壯(zhuang)苗(miao)。由(you)於(yu)早(zao)地(di)小(xiao)麥(mai)播(bo)種(zhong)的(de)適(shi)宜(yi)期(qi)短(duan)暫(zan),應(ying)早(zao)作(zuo)安(an)排(pai)趨(qu)墒(shang)及(ji)時(shi)播(bo)種(zhong)。在(zai)表(biao)墒(shang)不(bu)足(zu)而(er)底(di)墒(shang)較(jiao)好(hao)的(de)情(qing)況(kuang)下(xia),可(ke)采(cai)用(yong)深(shen)種(zhong)強(qiang)蓋(gai)或(huo)先(xian)鎮(zhen)壓(ya)提(ti)墒(shang)再(zai)播(bo)種(zhong)的(de)方(fang)式(shi);丘(qiu)陵(ling)墳(fen)地(di)或(huo)旱(han)塬(yuan)地(di),可(ke)結(jie)合(he)水(shui)平(ping)溝(gou)或(huo)區(qu)田(tian)壟(long)作(zuo)等(deng)抗(kang)早(zao)拚(pin)作(zuo)措(cuo)施(shi),進(jin)行(xing)壟(long)溝(gou)種(zhong)植(zhi),播(bo)種(zhong)前(qian)後(hou)均(jun)須(xu)鎮(zhen)壓(ya),隨(sui)播(bo)隨(sui)壓(ya),墒(shang)差(cha)時(shi)宜(yi)重(zhong)壓(ya)。早(zao)地(di)小(xiao)麥(mai)采(cai)用(yong)溝(gou)播(bo)方(fang)式(shi)或(huo)種(zhong)後(hou)保(bao)留(liu)播(bo)種(zhong)溝(gou),有(you)利(li)於(yu)蓄(xu)水(shui)、增溫、防寒。春麥區在冬前整好地的條件下,早春應趁返漿期適時耙糟槍墒下種;東北春麥區的部分幹旱區,。水分蒸發大且風蝕嚴重,采取不深拚而深鬆土和耙茬播種小麥的方法。麥田管理要注意防寒、保墒,促苗發育。北方冬小麥於越冬開始時碾
壓、耙攝,結合追施適量化肥。早春解凍返漿期頂淩耙麥;起qi身shen至zhi拔ba節jie前qian結jie合he降jiang雨yu可ke及ji時shi中zhong辨bian,如ru底di把ba不bu足zu肥fei力li不bu濟ji昧mei要yao在zai早zao春chun深shen施shi化hua肥fei,便bian於yu趨qu墒shang發fa揮hui肥fei效xiao。春chun小xiao麥mai生sheng育yu期qi短duan,發fa育yu快kuai,可ke在zai三san葉ye期qi壓ya苗miao提ti墒shang抗kang導dao線xian苗miao後hou中zhong拚pin保bao墒shang,但dan須xu防fang止zhi埋mai苗miao;追把也宜在三葉期趨墒一次深施為好。
手機版




