教你買到放心(xin)的玉米種(zhong)子

一、選種前：找準商家再出手

要(yao)(yao)到具有《種(zhong)(zhong)子生(sheng)產許(xu)可證(zheng)》、《種(zhong)(zhong)子合格證(zheng)》、《種(zhong)(zhong)子經(jing)營許(xu)可證(zheng)》及工(gong)商(shang)行政部門頒發的《營業執照》等證(zheng)件齊全(quan)的商(shang)家購買玉米種(zhong)(zhong)子。還要(yao)(yao)留心商(shang)家是否(fou)具有自己(ji)所購買品種(zhong)(zhong)的審定證(zheng)書或正式文件，對(dui)于尚未審定的玉米品種(zhong)(zhong)不(bu)宜購買。此外，對(dui)于新品種(zhong)(zhong)一定要(yao)(yao)詳細了解它的審定級(ji)別和適宜播種(zhong)(zhong)的生(sheng)態(tai)區域、土質、水肥要(yao)(yao)求(qiu)、抗(kang)性等，不(bu)要(yao)(yao)因片面追求(qiu)高效益而選擇(ze)與種(zhong)(zhong)植地塊條件不(bu)一致的種(zhong)(zhong)子。

二、選種時：留心種子“度”和“率”

在(zai)挑選種(zhong)(zhong)(zhong)(zhong)子時，要特別留心玉米(mi)種(zhong)(zhong)(zhong)(zhong)子的純度、發(fa)芽率和干濕(shi)度。純度可(ke)以這樣(yang)(yang)檢驗：在(zai)商家那里任意選取100粒種(zhong)(zhong)(zhong)(zhong)子，其(qi)大小、色(se)澤、粒形等(deng)差距(ju)較小，且很近似，說明該種(zhong)(zhong)(zhong)(zhong)子純度較高。如果(guo)所選的種(zhong)(zhong)(zhong)(zhong)子以上的特征成(cheng)二八開，說明該種(zhong)(zhong)(zhong)(zhong)子的混雜率在(zai)20%左右，這樣(yang)(yang)的種(zhong)(zhong)(zhong)(zhong)子不(bu)要購買(mai)。

其次，要(yao)保證(zheng)玉米(mi)種(zhong)子(zi)(zi)(zi)(zi)能有(you)(you)(you)較高的(de)發(fa)芽率，就要(yao)留(liu)心觀察種(zhong)子(zi)(zi)(zi)(zi)不能顏色發(fa)暗(an)、蟲蛀(zhu)、霉變，臍部不能有(you)(you)(you)橫的(de)條紋(wen)和開(kai)裂等(deng)現(xian)象。再有(you)(you)(you)，凡是潮濕(shi)的(de)種(zhong)子(zi)(zi)(zi)(zi)，都有(you)(you)(you)可能發(fa)霉變質，在檢驗種(zhong)子(zi)(zi)(zi)(zi)干(gan)濕(shi)度時(shi)可把手(shou)插(cha)入種(zhong)子(zi)(zi)(zi)(zi)袋(dai)中，凡是手(shou)上(shang)無味且有(you)(you)(you)清爽(shuang)感覺(jue)的(de)種(zhong)子(zi)(zi)(zi)(zi)比較干(gan)；反之，手(shou)上(shang)有(you)(you)(you)陰沉(chen)潮濕(shi)感且氣味不正，說(shuo)明種(zhong)子(zi)(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(ling)外，在購種(zhong)(zhong)后的15天內一定要做(zuo)種(zhong)(zhong)子發(fa)(fa)芽(ya)試驗(yan)，發(fa)(fa)芽(ya)率如果低(di)于85%的，應及時進行投訴維權。