教你買到放心的玉米種(zhong)子

一、選種前：找準商家再出手

要到具有(you)《種(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)生(sheng)產許(xu)可證(zheng)》、《種(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)合格證(zheng)》、《種(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)經營許(xu)可證(zheng)》及工商(shang)行政部(bu)門頒發的《營業執照》等證(zheng)件齊(qi)全的商(shang)家購買(mai)玉米種(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)。還要留心商(shang)家是否具有(you)自己所購買(mai)品種(zhong)(zhong)(zhong)(zhong)(zhong)的審(shen)定(ding)證(zheng)書或正式文(wen)件，對(dui)于(yu)尚未(wei)審(shen)定(ding)的玉米品種(zhong)(zhong)(zhong)(zhong)(zhong)不(bu)(bu)宜(yi)購買(mai)。此外，對(dui)于(yu)新品種(zhong)(zhong)(zhong)(zhong)(zhong)一定(ding)要詳細(xi)了解它(ta)的審(shen)定(ding)級(ji)別和適宜(yi)播種(zhong)(zhong)(zhong)(zhong)(zhong)的生(sheng)態區(qu)域(yu)、土質、水(shui)肥(fei)要求(qiu)、抗性等，不(bu)(bu)要因片面追(zhui)求(qiu)高(gao)效益而選擇與種(zhong)(zhong)(zhong)(zhong)(zhong)植地塊條(tiao)件不(bu)(bu)一致(zhi)的種(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)。

二、選種時：留心種子“度”和“率”

在挑(tiao)選種(zhong)(zhong)(zhong)子(zi)(zi)時(shi)，要特別(bie)留(liu)心(xin)玉米(mi)種(zhong)(zhong)(zhong)子(zi)(zi)的(de)純(chun)度、發(fa)芽率和干濕(shi)度。純(chun)度可(ke)以這(zhe)樣檢驗：在商家(jia)那里任意選取100粒種(zhong)(zhong)(zhong)子(zi)(zi)，其(qi)大小(xiao)、色澤、粒形等差距(ju)較小(xiao)，且(qie)很(hen)近(jin)似，說明該種(zhong)(zhong)(zhong)子(zi)(zi)純(chun)度較高。如果所選的(de)種(zhong)(zhong)(zhong)子(zi)(zi)以上的(de)特征(zheng)成(cheng)二(er)八開，說明該種(zhong)(zhong)(zhong)子(zi)(zi)的(de)混雜率在20%左右(you)，這(zhe)樣的(de)種(zhong)(zhong)(zhong)子(zi)(zi)不要購買。

其(qi)次，要(yao)保證(zheng)玉米種(zhong)子能有(you)較高的發芽(ya)率，就要(yao)留心觀(guan)察種(zhong)子不能顏色(se)發暗、蟲(chong)蛀、霉變，臍部不能有(you)橫的條紋(wen)和開裂等(deng)現象。再有(you)，凡是(shi)潮濕(shi)的種(zhong)子，都有(you)可(ke)能發霉變質(zhi)，在檢驗種(zhong)子干濕(shi)度時可(ke)把手插入種(zhong)子袋中，凡是(shi)手上(shang)(shang)無味(wei)且(qie)有(you)清爽感覺的種(zhong)子比(bi)較干；反之(zhi)，手上(shang)(shang)有(you)陰沉潮濕(shi)感且(qie)氣味(wei)不正，說明種(zhong)子較濕(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(gou)種后的15天內一(yi)定(ding)要做種子發芽試驗，發芽率如果(guo)低于85%的，應及時進行投訴(su)維權。