nongzuowuzaishengchangfayuguochengzhong,chuxuyaodanlinjiadengdaliangyuansuwai,haixuyaoyidingshuliangdeweiliangyuansufeiliao。zaiqiubozuowuzhong,maileishiyongxinfei,youcaishiyongpengfei,douleishiyongmufei,dasuanshiyongxi,malingshushiyongmengfeideng,tamensuiranshiyongliangshao,danshibibukeshao。ruyoucaiquepenghui“花而不實”、bilizengduo,luobuquepenghuichuxiankongxin,huacaiquepengjingganhuikailie,lvfeiquemugenliushengchangbuliangdeng。caiyongxialiejizhongfangfaqiaoshiweifei,duiqiubozuowunengshoudaohenhaodezengchanhetizhixiaoguo。
浸(jin)種(zhong)法(fa)先(xian)將(jiang)有(you)關(guan)微(wei)肥(fei)用(yong)水(shui)稀(xi)釋(shi)好(hao),然(ran)後(hou)將(jiang)種(zhong)子(zi)投(tou)入(ru)微(wei)肥(fei)液(ye)中(zhong),使(shi)種(zhong)子(zi)吸(xi)收(shou)肥(fei)液(ye)而(er)膨(peng)脹(zhang),肥(fei)分(fen)隨(sui)水(shui)液(ye)進(jin)入(ru)種(zhong)子(zi)內(nei)。因(yin)此(ci),在(zai)浸(jin)種(zhong)過(guo)程(cheng)中(zhong),必(bi)須(xu)經(jing)常(chang)翻(fan)動(dong)種(zhong)子(zi),使(shi)種(zhong)子(zi)均(jun)勻(yun)吸(xi)收(shou)肥(fei)液(ye),常(chang)用(yong)的(de)浸(jin)種(zhong)濃(nong)度(du)和(he)時(shi)間(jian)為(wei):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。
拌ban種zhong法fa先xian用yong少shao量liang水shui將jiang有you關guan微wei肥fei溶rong解jie,配pei成cheng高gao濃nong度du的de肥fei液ye,然ran後hou用yong幹gan淨jing的de噴pen霧wu器qi將jiang肥fei液ye噴pen灑sa在zai種zhong子zi上shang,邊bian噴pen邊bian拌ban,使shi種zhong子zi表biao麵mian沾zhan上shang一yi層ceng肥fei液ye,一yi般ban每mei0.5 公斤種子僅用微肥1~4克,待種子吸完曬幹後即可播種。如果是幹拌,則需將微肥粉末與種子充分拌勻,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。
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,bujindangjihuodangnian,erqiechixujinianrengkehuodejiaohaoxiaoguo,yincitushifashiyijingjitiaojianjiaohao,laolijiaoshaodenonghuyingyong。
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,見效又快。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;並(bing)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,以免造成浪費和產生副作用。
注意事項:濃nong度du要yao施shi用yong均jun勻yun。作zuo物wu對dui微wei量liang元yuan素su的de需xu求qiu數shu量liang較jiao少shao,微wei肥fei從cong缺que乏fa到dao適shi用yong量liang的de範fan圍wei相xiang當dang窄zhai,因yin此ci,要yao防fang止zhi用yong量liang過guo大da,注zhu意yi施shi用yong均jun勻yun。注zhu意yi與yu大da量liang元yuan素su肥fei料liao配pei合he使shi用yong。在zai滿man足zu作zuo物wu對dui大da量liang元yuan素su需xu求qiu的de基ji礎chu上shang,微wei肥fei才cai能neng表biao現xian出chu明ming顯xian的de增zeng產chan效xiao果guo。注zhu意yi各ge種zhong作zuo物wu對dui微wei肥fei的de反fan應ying程cheng度du。連lian年nian種zhong植zhi同tong一yi作zuo物wu,或huo單dan施shi含han大da量liang元yuan素su的de肥fei料liao,不bu注zhu意yi增zeng施shi有you機ji肥fei的de地di塊kuai,就jiu容rong易yi出chu現xian微wei量liang元yuan素su缺que乏fa症zheng。
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