兩種簡便種子發芽試驗的方法
1 土壤發芽試驗
此(ci)法(fa)最(zui)大(da)優(you)點(dian)是(shi)簡(jian)便(bian)易(yi)行(xing),其(qi)結(jie)果(guo)接(jie)近(jin)田(tian)間(jian)出(chu)苗(miao)實(shi)際(ji),因(yin)此(ci),往(wang)往(wang)用(yong)它(ta)來(lai)校(xiao)正(zheng)普(pu)通(tong)發(fa)芽(ya)試(shi)驗(yan)。在(zai)冬(dong)季(ji)或(huo)早(zao)春(chun)做(zuo)發(fa)芽(ya)試(shi)驗(yan)時(shi),用(yong)小(xiao)框(kuang)陶(tao)瓷(ci)淺(qian)缽(bo)裝(zhuang)入(ru)細(xi)土(tu)(最好是沙、土各半混合)做成發芽床,將種子播入(切勿將種子埋入土內,否則難以統計)。
天晴或室外溫度高時可放在室外向陽避風處,下午4時shi以yi後hou或huo天tian陰yin則ze搬ban回hui室shi內nei暖nuan和he地di方fang。夏xia季ji高gao溫wen季ji節jie做zuo土tu壤rang發fa芽ya試shi驗yan,則ze將jiang發fa芽ya床chuang放fang在zai陰yin涼liang透tou風feng處chu,使shi溫wen度du適shi當dang降jiang低di。待dai幼you苗miao出chu土tu後hou逐zhu日ri記ji載zai出chu苗miao種zhong子zi數shu,計ji算suan其qi發fa芽ya率lv。用yong此ci法fa,必bi須xu防fang止zhi土tu壤rang中zhong的de地di下xia害hai蟲chong或huo病bing菌jun的de侵qin害hai。
2 布卷毛巾發芽試驗
此法簡便,各地農村均可采用,宜於做大粒種子的發芽試驗。具體做法是:用幹淨的布或毛巾,放在開水中煮沸消毒,待冷後輔平將種子均勻排列在上麵(一組一塊布或半條毛巾),種子與種子之間亦應保持一定的距離,布(毛巾)deliangbianyaokongyuyicunduo,zaibudeyiduanfangyigenzhukuaiweizhou,ranhousongsongjuanchenggunbangzhuang,juanhaohouliangtouyongxianqingqingzhazhu,fangdaowendushiyidedifang,jingchanggeibujuansashuibaochishirun,yekejiangbujuandeyiduanfangruzhuangyouqingshuidepannei,shitamanmanxishui。
到dao規gui定ding日ri期qi打da開kai布bu卷juan統tong計ji發fa芽ya率lv,幾ji個ge品pin種zhong同tong時shi做zuo,注zhu意yi作zuo好hao標biao記ji。因yin此ci法fa透tou氣qi好hao,種zhong子zi發fa芽ya快kuai,對dui大da粒li種zhong子zi尤you其qi適shi用yong,但dan在zai統tong計ji發fa芽ya率lv時shi需xu打da開kai布bu卷juan。有you長chang芒mang的de或huo種zhong粒li較jiao大da的de牧mu草cao如ru披pi堿jian草cao、鵝e觀guan草cao等deng可ke用yong此ci法fa。以yi上shang幾ji種zhong方fang法fa最zui好hao互hu相xiang核he對dui使shi用yong,可ke以yi取qu得de較jiao準zhun確que的de發fa芽ya結jie果guo。硬ying實shi種zhong子zi的de發fa芽ya試shi驗yan,應ying先xian將jiang硬ying實shi進jin行xing處chu理li再zai做zuo試shi驗yan。



