在zai秋qiu播bo作zuo物wu中zhong,麥mai類lei需xu施shi鋅xin肥fei,油you菜cai需xu施shi硼peng肥fei,豆dou類lei需xu施shi鉬mu肥fei,大da蒜suan需xu施shi硒xi肥fei,馬ma鈴ling薯shu需xu施shi錳meng肥fei,它ta們men雖sui然ran施shi用yong量liang少shao,但dan是shi必bi不bu可ke少shao。如ru油you菜cai缺que硼peng會hui“花而不實”,秕粒增多;蘿卜缺硼會出現空心;花菜缺硼,莖稈會開裂;綠肥缺鉬,根瘤生長不良等。采用下列幾種方法巧施微肥,對秋播作物能收到很好的增產和提質效果。
策略一:浸種法
xianjiangyouguanweifeiyongshuixishihao,ranhoujiangzhongzitouruweifeiyezhong,shizhongzixishoufeiyeerpengzhang,yangfensuishuiyejinruzhongzinei。yinci,zaijinzhongguochengzhong,bixujingchangfandongzhongzi,shizhongzijunyunxishoufeiye。changyongdejinzhongnongduheshijianwei:鉬肥以0.05%-0.1%的鉬酸銨溶液浸10-12小時;硼肥以0.05%的硼砂溶液浸4-6小時;鋅肥以0.05%的硫酸鋅溶液浸12-24小時;錳肥以0.1%硫酸錳溶液浸8-12小時;稀土微肥以0.03%-0.1%的硝酸稀土浸10-12小時。種子浸好後,撈出晾幹後即可播種。
策略二:拌種法
先用少量水將有關微肥溶解,配成高濃度的肥液,然後將肥液噴灑在種子上,邊噴邊拌,使種子表麵沾上一層肥液。一般每0.5公斤種子僅用微肥1-4克,待種子吸完並明幹後即可播種。如果是幹拌,則需將微肥粉末與種子充分拌勻,其拌種用量一般按每公斤種子用量為:硼砂2-6克,鉬酸銨2-4克,硫酸銅8-15克,硫酸鋅4-6克,硫酸銅4-6克,稀土微肥2-4克。
策略三:噴施法
將微肥均勻噴施於作物葉麵,由葉片吸收後再供給植株的各個部位,這是一種常用的施肥法,既經濟,見效也快。做法是:先將有關微肥用水稀釋後再噴。通常硼砂或硼酸為0.1%-0.25%,鉬酸銨為0.05%-0.1%,硫酸銅為0.01%-0.02%,硫酸錳為0.05%-0.1%,硫酸銅為0.01%-0.02%,硝酸稀土為0.03%-0.1%。再根據作物生育期的長短決定噴灑次數。對敏感作物和缺素土壤宜多噴,每次噴灑以莖葉沾濕潤為宜;宜(yi)選(xuan)擇(ze)晴(qing)天(tian)黃(huang)昏(hun)噴(pen)灑(sa),盡(jin)可(ke)能(neng)延(yan)長(chang)肥(fei)液(ye)在(zai)作(zuo)物(wu)葉(ye)片(pian)上(shang)的(de)濕(shi)潤(run)時(shi)間(jian),增(zeng)強(qiang)吸(xi)肥(fei)效(xiao)果(guo)。最(zui)後(hou)根(gen)據(ju)需(xu)要(yao),將(jiang)幾(ji)種(zhong)微(wei)肥(fei)混(hun)合(he)噴(pen)灑(sa)或(huo)與(yu)其(qi)他(ta)肥(fei)料(liao)及(ji)農(nong)藥(yao)混(hun)噴(pen),以(yi)達(da)到(dao)肥(fei)料(liao)互(hu)補(bu)、互促作用,以及省工多效效應。但須事先經過少量混合觀察,有無渾濁、沉澱、冒氣泡等不良反應,若有則不能混用,以免造成浪費和副作用。
策略四:土施法
秋播作物播種時,將微肥0.5-1.5gongjinyuzhongzitongshiborubozhonggounei,ruguotushishuliangzu,kegongzuowuzhenggeshengchangqiliyong。shiyanbiaoming,weifeiyongliangdashi,zhizhutineiweiliangyangfenhanliangjiuda,youyuweifeizaiturangzhongyibeiturangkeliguding,yongliangjiaoda,touzijiaogao,suoyiyaojinliangjizhongshiyong,yijianshaodangjisunshitushideweifei。zheyangyilai,bujindangjidangnian,erqiechixujinianrengkehuodejiaohaoxiaoguo。yincitushifashiyiyujingjitiaojianjiaohao、勞力較少的農戶應用。
注意事項
zuowuduiweiliangyuansudexuqiushuliangjiaoshao,weifeicongquefadaoshiyongliangdefanweixiangdangzhai,yinci,yaofangzhiyongliangguoda,zhuyishiyongjunyun。zhuyiyudaliangyuansufeiliaopeiheshiyong。zaimanzuzuowuduidaliangyuansuxuqiudejichushang,weifeicainengbiaoxianchumingxiandezengchanxiaoguo。zhuyigezhongzuowuduiweifeidefanyingchengdu。ruguoliannianzhongzhitongyizuowuhuozhishihandaliangyuansudedanyifeiliao,bingqiebuzhuyizengshiyoujifeidedikuai,jiurongyichuxianweiliangyuansuquefazheng。
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