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、墒(shang)情(qing)不(bu)足(zu)等(deng)因(yin)素(su)引(yin)起(qi)。對(dui)由(you)土(tu)壤(rang)肥(fei)力(li)低(di)和(he)墒(shang)情(qing)不(bu)足(zu)引(yin)起(qi)的(de)弱(ruo)苗(miao),應(ying)加(jia)強(qiang)管(guan)理(li),做(zuo)到(dao)早(zao)管(guan)早(zao)促(cu),在(zai)追(zhui)肥(fei)後(hou)澆(jiao)水(shui),及(ji)時(shi)中(zhong)耕(geng)鬆(song)土(tu),促(cu)進(jin)根(gen)係(xi)生(sheng)長(chang)和(he)分(fen)蘖(nie)發(fa)生(sheng),使(shi)弱(ruo)苗(miao)迅(xun)速(su)轉(zhuan)壯(zhuang)。一(yi)般(ban)在(zai)小(xiao)麥(mai)3葉期,每畝用尿素5~7公斤、農家肥2500~3000gongjinhunheshiyong。duiyouwanboyinqideruomiao,chuqueshangyanzhongdetiankuaiwai,yibanbujiaoshui,yimianzaochengdiwenxiajiang,buliyufamiao,yingqianzhonggengbaoshangzengwen。duiwanbo、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。
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