新《種子法》放開品種準入渠道政策實施以來，使得近年來每年有千余個玉米新品種（國審、省審、引種(zhong)(zhong)合計）進(jin)入生產(chan)。如今(jin)的(de)(de)品(pin)種(zhong)(zhong)審定(ding)，已背(bei)離了當初(chu)設立品(pin)種(zhong)(zhong)審定(ding)制(zhi)度、控制(zhi)品(pin)種(zhong)(zhong)多(duo)亂雜的(de)(de)初(chu)衷。據調查，種(zhong)(zhong)植品(pin)種(zhong)(zhong)數(shu)量(liang)超150個的(de)(de)縣（市）不在少數(shu)，有(you)的(de)(de)甚至超過(guo)了200個。面對準入渠道審定(ding)井(jing)噴涌現(xian)的(de)(de)新品(pin)種(zhong)(zhong)，農民迷茫，經銷(xiao)商困惑(huo)，到(dao)底買賣哪個好(hao)？真有(you)些“亂花漸欲迷人眼(yan)，淺草才能沒馬蹄(ti)”的(de)(de)意思，但無論(lun)新品(pin)種(zhong)(zhong)數(shu)量(liang)再多(duo)，做到(dao)從生產(chan)實際(ji)出發，堅持(chi)以下選種(zhong)(zhong)原則，選擇的(de)(de)玉米品(pin)種(zhong)(zhong)就不會出大問(wen)題。

      一、勿盲目求新

      新品(pin)(pin)(pin)種(zhong)價高(gao)風險高(gao)。一個新品(pin)(pin)(pin)種(zhong)具(ju)體到某個區域，豐產和穩(wen)產性表現(xian)會因(yin)耕作制度、生產條(tiao)件(jian)、種(zhong)植(zhi)習慣、主要氣象災害與病(bing)蟲害等的(de)(de)(de)不(bu)同而(er)不(bu)同，只(zhi)有(you)經過(guo)一段(duan)時間的(de)(de)(de)檢驗(yan)方(fang)可得知是(shi)否優良(liang)。可以肯定的(de)(de)(de)說(shuo)，在(zai)(zai)數以千計(ji)的(de)(de)(de)新品(pin)(pin)(pin)種(zhong)中(zhong)，不(bu)乏存在(zai)(zai)有(you)致命缺(que)陷的(de)(de)(de)“孬種(zhong)”。要留意(yi)當地(di)農技(ji)部門等安排的(de)(de)(de)品(pin)(pin)(pin)比(bi)試(shi)(shi)驗(yan)和品(pin)(pin)(pin)種(zhong)展示試(shi)(shi)驗(yan)，更要留意(yi)它在(zai)(zai)一些種(zhong)植(zhi)戶手中(zhong)密植(zhi)條(tiao)件(jian)下的(de)(de)(de)表現(xian)，畢竟加密種(zhong)植(zhi)是(shi)玉米諸多性狀是(shi)否優良(liang)的(de)(de)(de)試(shi)(shi)金(jin)石(shi)。對某個新品(pin)(pin)(pin)種(zhong)感興趣時，要堅持先(xian)試(shi)(shi)種(zhong)后推廣(guang)(guang)的(de)(de)(de)原則，小面(mian)積試(shi)(shi)種(zhong)2年以上后再擴大(da)(da)種(zhong)植(zhi)面(mian)積，并(bing)要注意(yi)品(pin)(pin)(pin)種(zhong)合理搭配。老品(pin)(pin)(pin)種(zhong)在(zai)(zai)豐產穩(wen)產性、抗逆廣(guang)(guang)適性方(fang)面(mian)經受過(guo)長時間考驗(yan)，定有(you)存在(zai)(zai)的(de)(de)(de)價值。當種(zhong)糧大(da)(da)戶每年都需(xu)更換品(pin)(pin)(pin)種(zhong)時，說(shuo)明已陷入“怪圈”，不(bu)是(shi)好現(xian)象。

      二、勿選有致命缺陷的品種

      規模化(hua)生(sheng)(sheng)(sheng)產(chan)由于土地流轉費、用工(gong)費等(deng)的(de)發生(sheng)(sheng)(sheng)，單位面積利潤空間有限(xian)，經不(bu)起生(sheng)(sheng)(sheng)產(chan)事故。因(yin)此，做到(dao)“簡化(hua)高效、安(an)全(quan)生(sheng)(sheng)(sheng)產(chan)”是種(zhong)糧(liang)大戶(hu)經營(ying)成(cheng)功的(de)關鍵(jian)，而選(xuan)擇抗(kang)逆(ni)性好(hao)、適應(ying)性廣的(de)品(pin)種(zhong)是實現安(an)全(quan)生(sheng)(sheng)(sheng)產(chan)的(de)重要一(yi)環。雖然沒有十(shi)全(quan)十(shi)美的(de)品(pin)種(zhong)，但選(xuan)擇的(de)品(pin)種(zhong)絕不(bu)可(ke)有致命缺陷，對明(ming)知存在致命缺陷的(de)品(pin)種(zhong)，最好(hao)避(bi)而遠之。在品(pin)種(zhong)抗(kang)逆(ni)性方面要重點關注以下幾(ji)點：

      1．注意耐高溫性能

      近年來，模仿育種泛濫，大量美系不耐高溫品種通過審定并推廣，品種是否耐高溫問題越發凸顯。2016~2023年黃淮海夏播區連續7年遇到了此問題，緯度相對偏高的河北省也未能幸免。當發生因高溫而減產事故后，種業公司基本都以“品(pin)(pin)(pin)種(zhong)(zhong)(zhong)是(shi)審定(ding)品(pin)(pin)(pin)種(zhong)(zhong)(zhong)，出問題是(shi)氣候(hou)異(yi)常造成的”來推卸責任，使種(zhong)(zhong)(zhong)植(zhi)(zhi)(zhi)戶蒙(meng)受損失。國內不(bu)(bu)乏耐高(gao)(gao)溫種(zhong)(zhong)(zhong)質資源，傳統的黃(huang)改系列品(pin)(pin)(pin)種(zhong)(zhong)(zhong)表(biao)現就較好，規避高(gao)(gao)溫危(wei)害(hai)(hai)的關鍵在(zai)于(yu)選擇耐高(gao)(gao)溫品(pin)(pin)(pin)種(zhong)(zhong)(zhong)！經驗(yan)表(biao)明，河北兩熟區6月12日之(zhi)前(qian)播種(zhong)(zhong)(zhong)的和6月20日之(zhi)后播種(zhong)(zhong)(zhong)的玉(yu)米(mi)易(yi)受高(gao)(gao)溫危(wei)害(hai)(hai)，密植(zhi)(zhi)(zhi)加劇高(gao)(gao)溫熱害(hai)(hai)；高(gao)(gao)溫對不(bu)(bu)耐高(gao)(gao)溫品(pin)(pin)(pin)種(zhong)(zhong)(zhong)影響不(bu)(bu)僅(jin)限(xian)于(yu)授(shou)粉不(bu)(bu)良，在(zai)晚播、密植(zhi)(zhi)(zhi)情(qing)況(kuang)下(xia)(xia)還(huan)會出現雌(ci)穗發育嚴重異(yi)常、花(hua)期不(bu)(bu)遇(yu)（相(xiang)差6天以上）等現象，可造成籽粒基本絕(jue)收，秦唐廊三地夏玉(yu)米(mi)及中南部播期沒有保證(zheng)的種(zhong)(zhong)(zhong)糧(liang)大戶易(yi)受此(ci)危(wei)害(hai)(hai)。晚播青貯(zhu)玉(yu)米(mi)禁止種(zhong)(zhong)(zhong)植(zhi)(zhi)(zhi)不(bu)(bu)耐高(gao)(gao)溫品(pin)(pin)(pin)種(zhong)(zhong)(zhong)；順(shun)便說一下(xia)(xia)，以銷(xiao)售為(wei)目而種(zhong)(zhong)(zhong)植(zhi)(zhi)(zhi)青貯(zhu)玉(yu)米(mi)的，一定(ding)要選糧(liang)飼兼用品(pin)(pin)(pin)種(zhong)(zhong)(zhong)，防范市場風險。

不耐高溫品(pin)種

      2．注意耐密抗倒性

      有賴于(yu)機械(xie)收獲的(de)種(zhong)糧大戶必須(xu)高度重視(shi)品(pin)種(zhong)抗(kang)倒性(xing)問(wen)題。上百畝玉米(mi)一旦倒伏(fu)，人工(gong)收獲成本難以承(cheng)受，棄之又可惜。這些年(nian)豐(feng)產潛力(li)優(you)于(yu)鄭單958的(de)**20種(zhong)植面(mian)積銳減，原因就是(shi)它在抗(kang)倒方(fang)面(mian)有瑕疵。不(bu)要認為化控可解決易倒品(pin)種(zhong)抗(kang)倒問(wen)題，風略大它也(ye)無(wu)效，并且多數化控劑主(zhu)要成分是(shi)乙烯利，施之易引起(qi)玉米(mi)后期早衰，早衰玉米(mi)反而(er)更易倒。要避(bi)免(mian)種(zhong)植莖(jing)稈機械(xie)組織(zhi)發育(yu)不(bu)良(liang)、株高2.9米(mi)以上、抽雄前根系發育(yu)差以及高感莖(jing)腐病的(de)品(pin)種(zhong)，莖(jing)稈機械(xie)組織(zhi)發育(yu)不(bu)良(liang)品(pin)種(zhong)抽雄前就可能嚴(yan)重莖(jing)折，如**909。收獲前是(shi)直觀調(diao)查品(pin)種(zhong)抗(kang)倒性(xing)的(de)最佳時機，一是(shi)觀察倒伏(fu)發生(sheng)情(qing)況；二(er)是(shi)斜拉(la)(la)植株，看會不(bu)會拉(la)(la)折、拉(la)(la)折時的(de)角(jiao)度及反彈力(li)度，拉(la)(la)折角(jiao)度小(xiao)、不(bu)能快速(su)反彈恢復直立的(de)通常(chang)抗(kang)倒力(li)差。

      適宜種(zhong)植(zhi)(zhi)密度不(bu)足(zu)4000株/畝(mu)的品種(zhong)不(bu)推(tui)薦種(zhong)植(zhi)(zhi)，這類品種(zhong)豐(feng)產(chan)潛力有限(xian)，穩(wen)產(chan)性也一般，一旦(dan)密植(zhi)(zhi)很(hen)容(rong)易出問題。

遇(yu)風(feng)即(ji)倒(dao)的品(pin)種

      3．注意對腐霉莖腐抗性

      重發莖腐(fu)(fu)(fu)病(bing)(bing)不(bu)(bu)僅導(dao)致減產，還會引起后期倒(dao)伏而影(ying)響機(ji)收，或增加(jia)收獲損失率。不(bu)(bu)要認為審(shen)(shen)定(ding)公(gong)告上寫著(zhu)“抗(kang)莖腐(fu)(fu)(fu)病(bing)(bing)”或“高抗(kang)莖腐(fu)(fu)(fu)病(bing)(bing)”，品(pin)(pin)(pin)(pin)種(zhong)就(jiu)一定(ding)抗(kang)莖腐(fu)(fu)(fu)。可引發莖腐(fu)(fu)(fu)病(bing)(bing)的(de)致病(bing)(bing)菌(jun)(jun)(jun)有(you)30多(duo)種(zhong)，但目前品(pin)(pin)(pin)(pin)審(shen)(shen)抗(kang)鑒只(zhi)(zhi)鑒定(ding)禾(he)谷(gu)鐮孢(bao)菌(jun)(jun)(jun)一種(zhong)，審(shen)(shen)定(ding)公(gong)告給出的(de)鑒定(ding)結論緣(yuan)于(yu)此。禾(he)谷(gu)鐮孢(bao)菌(jun)(jun)(jun)會引發“青(qing)(qing)枯型(xing)(xing)”莖腐(fu)(fu)(fu)（青(qing)(qing)枯病(bing)(bing)），“青(qing)(qing)枯型(xing)(xing)”莖腐(fu)(fu)(fu)由于(yu)品(pin)(pin)(pin)(pin)審(shen)(shen)時把關(guan)，生(sheng)產上已問(wen)題不(bu)(bu)大，故而要重點留意品(pin)(pin)(pin)(pin)種(zhong)對各種(zhong)腐(fu)(fu)(fu)霉菌(jun)(jun)(jun)侵染(ran)引起的(de)“黃枯型(xing)(xing)”莖腐(fu)(fu)(fu)抗(kang)性。市(shi)售美系品(pin)(pin)(pin)(pin)種(zhong)普遍(bian)高感(gan)腐(fu)(fu)(fu)霉莖腐(fu)(fu)(fu)，這些(xie)品(pin)(pin)(pin)(pin)種(zhong)中(zhong)(zhong)不(bu)(bu)乏審(shen)(shen)定(ding)公(gong)告上寫著(zhu)抗(kang)或高抗(kang)莖腐(fu)(fu)(fu)病(bing)(bing)，生(sheng)產中(zhong)(zhong)卻表現高感(gan)，只(zhi)(zhi)是感(gan)的(de)病(bing)(bing)原(yuan)菌(jun)(jun)(jun)不(bu)(bu)同罷了。目前審(shen)(shen)定(ding)公(gong)告上無品(pin)(pin)(pin)(pin)種(zhong)對腐(fu)(fu)(fu)霉莖腐(fu)(fu)(fu)抗(kang)性信(xin)息，相(xiang)關(guan)信(xin)息只(zhi)(zhi)能來自生(sheng)產實踐。有(you)些(xie)品(pin)(pin)(pin)(pin)種(zhong)包裝袋上印有(you)風險提示語“注意防(fang)治莖腐(fu)(fu)(fu)病(bing)(bing)”，要懂得其含義。

高感(gan)腐霉(mei)莖(jing)腐品種

      4．注意對穗腐和粒腐病抗性

      有40余(yu)種(zhong)病(bing)原菌可引起玉(yu)米穗(sui)(sui)(sui)腐(fu)、粒(li)(li)腐(fu)病(bing)，選抗病(bing)品種(zhong)是(shi)解決穗(sui)(sui)(sui)粒(li)(li)腐(fu)病(bing)最(zui)經濟有效的(de)措施。當前不少(shao)品種(zhong)后期即便(bian)降(jiang)雨不充沛也(ye)極(ji)易“漚尖”，這(zhe)是(shi)對穗(sui)(sui)(sui)腐(fu)病(bing)抗性一(yi)般的(de)標志(zhi)，少(shao)種(zhong)為宜。2016年國(guo)(guo)審品種(zhong)**606高發穗(sui)(sui)(sui)腐(fu)，重病(bing)田病(bing)穗(sui)(sui)(sui)率達(da)50%~70%，其中重穗(sui)(sui)(sui)腐(fu)率達(da)到了20%。穗(sui)(sui)(sui)腐(fu)與(yu)粒(li)(li)腐(fu)病(bing)重發，嚴重影響籽粒(li)(li)商品品質(zhi)。國(guo)(guo)家食品安全標準-糧食（GB 2715-2016）和玉(yu)米檢(jian)測標準（GB 1353-2018）均規(gui)定，霉變粒(li)(li)不得高于2%。

穗(sui)腐病重發田

      三、留意品種審定編號

      如果介意(yi)品(pin)(pin)種通過審(shen)(shen)(shen)(shen)(shen)定(ding)(ding)的(de)(de)(de)渠道(dao)，不妨留(liu)意(yi)一下品(pin)(pin)種審(shen)(shen)(shen)(shen)(shen)定(ding)(ding)編號(hao)。最近幾年(nian)新審(shen)(shen)(shen)(shen)(shen)定(ding)(ding)品(pin)(pin)種的(de)(de)(de)審(shen)(shen)(shen)(shen)(shen)定(ding)(ding)編號(hao)由3個漢字和(he)8位數字組成，3個漢字一般為(wei)(wei)(wei)“國審(shen)(shen)(shen)(shen)(shen)玉”或“冀(ji)審(shen)(shen)(shen)(shen)(shen)玉”（其(qi)他省審(shen)(shen)(shen)(shen)(shen)定(ding)(ding)的(de)(de)(de)品(pin)(pin)種需有(you)引種批號(hao)）；8位數字自(zi)左向右，前4位為(wei)(wei)(wei)審(shen)(shen)(shen)(shen)(shen)定(ding)(ding)年(nian)份，最后3位是審(shen)(shen)(shen)(shen)(shen)定(ding)(ding)品(pin)(pin)種序(xu)號(hao)，關鍵看(kan)第(di)五位數字。國審(shen)(shen)(shen)(shen)(shen)品(pin)(pin)種目前只有(you)兩種可能，“0”和(he)“6”，“6”為(wei)(wei)(wei)綠色通道(dao)審(shen)(shen)(shen)(shen)(shen)定(ding)(ding)的(de)(de)(de)品(pin)(pin)種，其(qi)他為(wei)(wei)(wei)“0”；冀(ji)審(shen)(shen)(shen)(shen)(shen)品(pin)(pin)種暫行4種，“0”代表主渠道(dao)審(shen)(shen)(shen)(shen)(shen)定(ding)(ding)，“6”為(wei)(wei)(wei)綠色通道(dao)，“8”為(wei)(wei)(wei)聯合體鑒定(ding)(ding)，“9”為(wei)(wei)(wei)自(zi)主開(kai)展試(shi)驗(yan)（多見甜糯等特用(yong)玉米(mi)）。

      四、因地制宜選品種

      每(mei)個(ge)品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)都有優缺(que)點，根據(ju)耕作制度(du)、生產條件、種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)植習慣選品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)，規避主要(yao)氣象(xiang)災(zai)害(hai)(hai)與病(bing)(bing)蟲(chong)害(hai)(hai)，不(bu)外(wai)乎(hu)說“適宜”就是最好的(de)。張承地區(qu)(qu)、西部太行山(shan)春播區(qu)(qu)選種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)，要(yao)留(liu)意品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)抗(kang)旱耐瘠(ji)薄特(te)性(xing)(xing)，還要(yao)注意品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)對大(da)小斑病(bing)(bing)、彎孢葉斑病(bing)(bing)、灰(hui)斑病(bing)(bing)等抗(kang)性(xing)(xing)。東部黑龍港區(qu)(qu)晚春播或早夏播玉米，要(yao)關(guan)注品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)苗(miao)期抗(kang)旱性(xing)(xing)。秦唐廊(lang)三地夏播，除(chu)了要(yao)選早熟(shu)、耐高溫品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)外(wai)，還需注意品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)對瘤(liu)黑粉(fen)病(bing)(bing)抗(kang)性(xing)(xing)，瘤(liu)黑粉(fen)病(bing)(bing)非抗(kang)鑒時高感一票否決病(bing)(bing)害(hai)(hai)，市(shi)售品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)中不(bu)乏高感品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)，該區(qu)(qu)域降雨(yu)較充沛，感病(bing)(bing)品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)易(yi)(yi)高發(fa)瘤(liu)黑粉(fen)病(bing)(bing)。冀中山(shan)前平原區(qu)(qu)既(ji)是河(he)北省夏玉米高產區(qu)(qu)，又(you)是風災(zai)易(yi)(yi)重(zhong)發(fa)區(qu)(qu)域，選抗(kang)倒品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)至關(guan)重(zhong)要(yao)。中南(nan)部地區(qu)(qu)易(yi)(yi)受高溫危害(hai)(hai)，選種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)的(de)品(pin)(pin)(pin)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)要(yao)耐高溫，同時對一些(xie)葉部病(bing)(bing)害(hai)(hai)也要(yao)有較好抗(kang)性(xing)(xing)；緯度(du)越低(di)，細菌性(xing)(xing)頂(ding)腐病(bing)(bing)與南(nan)方銹(xiu)病(bing)(bing)發(fa)生會越重(zhong)。

      另外(wai)，不得種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)植未(wei)審定(ding)品種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)，《種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)法》規(gui)定(ding)，玉米未(wei)審定(ding)品種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)即(ji)為假種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)，跨區銷售品種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)視同于未(wei)審定(ding)品種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)。購(gou)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)時(shi)要選擇發(fa)芽(ya)率(lv)不低(di)于93%的(de)(de)(de)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)，發(fa)芽(ya)率(lv)僅(jin)≥85%的(de)(de)(de)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)不能用(yong)于精(jing)量播(bo)(bo)(bo)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)。國家市場監督管(guan)理總局和國家標準化管(guan)理委員(yuan)會2020年10月(yue)11日(ri)發(fa)布了(le)GB 4404.1-2008第(di)一號修改單(dan)，將GB 4404.1-2008原版本(ben)中玉米單(dan)交種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)發(fa)芽(ya)率(lv)應(ying)≥85%之規(gui)定(ding)改為了(le)兩項：大(da)田用(yong)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)（非單(dan)粒(li)(li)播(bo)(bo)(bo)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)）發(fa)芽(ya)率(lv)應(ying)≥85%，大(da)田用(yong)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)（單(dan)粒(li)(li)播(bo)(bo)(bo)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)）發(fa)芽(ya)率(lv)應(ying)≥93%。仍給出與原規(gui)定(ding)基(ji)本(ben)無(wu)差(cha)別(bie)的(de)(de)(de)前(qian)項規(gui)定(ding)之目的(de)(de)(de)耐人尋味(wei)：第(di)一，生(sheng)產上單(dan)粒(li)(li)播(bo)(bo)(bo)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)已經普及(ji)，非單(dan)粒(li)(li)播(bo)(bo)(bo)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)機(ji)已基(ji)本(ben)淘汰；第(di)二，非單(dan)粒(li)(li)播(bo)(bo)(bo)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)不能用(yong)于單(dan)粒(li)(li)播(bo)(bo)(bo)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)，但(dan)用(yong)于單(dan)粒(li)(li)播(bo)(bo)(bo)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)子(zi)卻(que)可以非單(dan)粒(li)(li)播(bo)(bo)(bo)種(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)(zhong)。