旺苗管理 旺苗一般是由土壤肥力好、底肥足、墒情好、播種偏早、密度偏大等因素引起。對由底肥足、shangqinghaoyinqidewangmiao,yingcaiqushenzhonggengdebanfaduanqulaogen,cujinxingenxiazha,tiaojieyangfendexishou,jianshaochunjifennie,fangzhituchang,cujindaniechengsui。duiyoumiduguodahuobozhongpianzaoyinqidewangmiao,yingjishishumiao,jianlishiyidequntijiegou,shigetichongfenfayu。youtiaojiandedifangkeyiliyongduoxiaozuolaikongzhimaimiaowangchang,yibanzaiyuedongqianmeimuyong15%多效唑可濕性粉劑50~60克加水噴霧。
弱苗管理 弱苗主要是由播種偏晚、整地質量差、土壤肥力低、shangqingbuzudengyinsuyinqi。duiyouturangfeilidiheshangqingbuzuyinqideruomiao,yingjiaqiangguanli,zuodaozaoguanzaocu,zaizhuifeihoujiaoshui,jishizhonggengsongtu,cujingenxishengchanghefenniefasheng,shiruomiaoxunsuzhuanzhuang。yibanzaixiaomai3葉期,每畝用尿素5~7公斤、農家肥2500~3000公(gong)斤(jin)混(hun)合(he)施(shi)用(yong)。對(dui)由(you)晚(wan)播(bo)引(yin)起(qi)的(de)弱(ruo)苗(miao),除(chu)缺(que)墒(shang)嚴(yan)重(zhong)的(de)田(tian)塊(kuai)外(wai),一(yi)般(ban)不(bu)澆(jiao)水(shui),以(yi)免(mian)造(zao)成(cheng)地(di)溫(wen)下(xia)降(jiang),不(bu)利(li)於(yu)發(fa)苗(miao),應(ying)淺(qian)中(zhong)耕(geng)保(bao)墒(shang)增(zeng)溫(wen)。對(dui)晚(wan)播(bo)、整地質量差的麥田,應及時中耕鬆土,同時每畝補施有機肥2000~3000公斤。
壯苗管理 對dui底di肥fei不bu足zu但dan墒shang情qing好hao的de壯zhuang苗miao麥mai田tian,應ying趁chen墒shang補bu肥fei,避bi免mian麥mai苗miao脫tuo肥fei轉zhuan化hua為wei弱ruo苗miao。底di肥fei充chong足zu但dan跑pao墒shang嚴yan重zhong,並bing已yi出chu現xian缺que墒shang的de壯zhuang苗miao麥mai田tian,應ying中zhong耕geng鬆song土tu保bao墒shang提ti墒shang。已yi嚴yan重zhong缺que墒shang的de壯zhuang苗miao麥mai田tian,應ying灌guan分fen蘖nie水shui,灌guan水shui後hou中zhong耕geng鬆song土tu。底di肥fei足zu、墒情好、適時播種的壯苗麥田,一般不必再施肥,隻要中耕保墒。
手機版




