zainongyeshengchanzhong，zhongzidexuanzeshizuijichudebufen，danshiyeshizuizhongyaodebufen，zhiyouxuanzeleheshidezhongzijinxingbozhong，cainengbangzhutishengchanlianghepinzhi。suoyizaizhongzidexuanzeshang

，yidingbunengmahu，eryaorenzhenwancheng。yanshuixuanzhong，shishuixuandeyizhongfangshi。youyuzhongzidebizhonghexiangtongtijiyanshuidebizhongbutong
，dangbazhongzidaorunongdushiyideyanshuili


，baomanwanhao
、比重大的種子下沉
；癟粒、破(po)粒(li)等(deng)不(bu)合(he)格(ge)種(zhong)子(zi)，因(yin)比(bi)重(zhong)小(xiao)，會(hui)浮(fu)出(chu)水(shui)麵(mian)，憑(ping)此(ci)可(ke)選(xuan)出(chu)優(you)良(liang)種(zhong)子(zi)來(lai)。用(yong)這(zhe)種(zhong)方(fang)法(fa)選(xuan)種(zhong)，要(yao)掌(zhang)握(wo)好(hao)鹽(yan)水(shui)的(de)濃(nong)度(du)，最(zui)好(hao)用(yong)比(bi)重(zhong)計(ji)來(lai)測(ce)定(ding)。如(ru)果(guo)沒(mei)有(you)比(bi)重(zhong)計(ji)，可(ke)將(jiang)已(yi)溶(rong)解(jie)的(de)鹽(yan)水(shui)舀(yao)出(chu)一(yi)碗(wan)，然(ran)後(hou)放(fang)進(jin)一(yi)匙(chi)要(yao)選(xuan)的(de)種(zhong)子(zi)
，假(jia)如(ru)全(quan)沉(chen)下(xia)去(qu)，說(shuo)明(ming)鹽(yan)水(shui)太(tai)淡(dan)，應(ying)該(gai)繼(ji)續(xu)加(jia)進(jin)食(shi)鹽(yan)；ruguodabufenzhongzipiaozaishuimian
，shuomingyanshuitainong，yingjiashuixishi，zhidaodabufenzhongzixiezaiwandiweizhi。lingwaiyaozhuyideshi，yanshuilianxushiyongduoci

，yanfenhuibeizhongzidaizouyibufen，yingjishijiayanbuchong，yifangnongdujiangdiyingxiangxuanzhongzhiliang。

鹽(yan)水(shui)選(xuan)種(zhong)是(shi)農(nong)業(ye)領(ling)域(yu)比(bi)較(jiao)簡(jian)單(dan)，容(rong)易(yi)掌(zhang)握(wo)的(de)一(yi)種(zhong)方(fang)式(shi)方(fang)法(fa)，適(shi)合(he)於(yu)普(pu)通(tong)農(nong)戶(hu)的(de)種(zhong)子(zi)選(xuan)優(you)，可(ke)以(yi)幫(bang)助(zhu)農(nong)民(min)避(bi)免(mian)因(yin)為(wei)劣(lie)質(zhi)種(zhong)子(zi)而(er)導(dao)致(zhi)的(de)生(sheng)產(chan)損(sun)失(shi)
，使(shi)者(zhe)的(de)推(tui)廣(guang)的(de)一(yi)種(zhong)方(fang)式(shi)。中國糧油儀器網 http://www.98fo.cn

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