教你買到放(fang)心的玉米種子

一、選種前：找準商家再出手

要(yao)到具(ju)有《種(zhong)子(zi)生產許(xu)可證(zheng)》、《種(zhong)子(zi)合格證(zheng)》、《種(zhong)子(zi)經營許(xu)可證(zheng)》及工(gong)商(shang)行政(zheng)部門頒(ban)發(fa)的(de)《營業執照》等(deng)證(zheng)件(jian)齊(qi)全的(de)商(shang)家(jia)購(gou)買(mai)玉米種(zhong)子(zi)。還要(yao)留(liu)心商(shang)家(jia)是否具(ju)有自己所購(gou)買(mai)品(pin)種(zhong)的(de)審定(ding)證(zheng)書或正式文件(jian)，對于尚未審定(ding)的(de)玉米品(pin)種(zhong)不(bu)(bu)宜(yi)(yi)購(gou)買(mai)。此外，對于新品(pin)種(zhong)一(yi)定(ding)要(yao)詳細了解它的(de)審定(ding)級別和適宜(yi)(yi)播種(zhong)的(de)生態區域(yu)、土質、水肥(fei)要(yao)求、抗性(xing)等(deng)，不(bu)(bu)要(yao)因片面追(zhui)求高效益而選擇與種(zhong)植地塊條件(jian)不(bu)(bu)一(yi)致(zhi)的(de)種(zhong)子(zi)。

二、選種時：留心種子“度”和“率”

在(zai)挑選種(zhong)(zhong)子(zi)(zi)(zi)(zi)時，要特(te)別留心玉米(mi)種(zhong)(zhong)子(zi)(zi)(zi)(zi)的純度(du)、發芽率和(he)干(gan)濕度(du)。純度(du)可以這樣(yang)檢驗：在(zai)商家那里任意選取100粒(li)種(zhong)(zhong)子(zi)(zi)(zi)(zi)，其(qi)大小(xiao)、色澤、粒(li)形(xing)等差距較小(xiao)，且(qie)很近似(si)，說(shuo)明(ming)該(gai)種(zhong)(zhong)子(zi)(zi)(zi)(zi)純度(du)較高(gao)。如果所選的種(zhong)(zhong)子(zi)(zi)(zi)(zi)以上的特(te)征成二八開，說(shuo)明(ming)該(gai)種(zhong)(zhong)子(zi)(zi)(zi)(zi)的混(hun)雜(za)率在(zai)20%左(zuo)右，這樣(yang)的種(zhong)(zhong)子(zi)(zi)(zi)(zi)不要購買。

其次，要(yao)(yao)保證玉米種(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)能(neng)有(you)較高的(de)發芽率，就要(yao)(yao)留心觀察(cha)種(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)不(bu)能(neng)顏色發暗(an)、蟲蛀、霉變，臍部不(bu)能(neng)有(you)橫的(de)條紋(wen)和開裂等現象。再有(you)，凡(fan)是潮濕(shi)的(de)種(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)，都有(you)可能(neng)發霉變質(zhi)，在(zai)檢驗種(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)干濕(shi)度(du)時可把手(shou)插入種(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)袋中，凡(fan)是手(shou)上無味且有(you)清爽感(gan)覺的(de)種(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)比較干；反之，手(shou)上有(you)陰沉潮濕(shi)感(gan)且氣(qi)味不(bu)正，說明種(zhong)(zhong)(zhong)(zhong)子(zi)(zi)(zi)較濕(shi)。

三、選種后：保留單據最重要在選種后一定要保存好種子標簽、發貨票、信譽卡等維權證據。另外，在購種(zhong)后(hou)的15天內一定要做(zuo)種(zhong)子發芽(ya)試(shi)驗，發芽(ya)率(lv)如果(guo)低于85%的，應及時進(jin)行投(tou)訴維(wei)權。