種子純度是保證優良品種增產潛力得以發揮的關鍵因素。今年小春季節，市、縣兩級農業部門共抽取183個油菜品(pin)種(zhong)(zhong)(zhong)樣(yang)品(pin)，依(yi)照種(zhong)(zhong)(zhong)子質量(liang)檢驗規程，分(fen)別(bie)完成了田(tian)間(jian)純(chun)度種(zhong)(zhong)(zhong)植(zhi)鑒(jian)定(ding)。根據(ju)田(tian)間(jian)鑒(jian)定(ding)結(jie)果(guo)分(fen)析(xi)，種(zhong)(zhong)(zhong)植(zhi)鑒(jian)定(ding)的(de)183個(ge)品(pin)種(zhong)(zhong)(zhong)種(zhong)(zhong)(zhong)子合(he)格株率(lv)94.70—99.86,極差5.16%,平均(jun)97.62%，依(yi)油(you)(you)菜種(zhong)(zhong)(zhong)子質量(liang)標準（GB4407.2—2008），鑒(jian)定(ding)樣(yang)品(pin)純(chun)度均(jun)合(he)格(不低(di)于(yu)85%），合(he)格率(lv)100%；田(tian)間(jian)鑒(jian)定(ding)油(you)(you)菜種(zhong)(zhong)(zhong)子雜株類型(xing)占比：不育株和半不育株1.28%、異(yi)型(xing)株0.71%，而早花株僅(jin)為(wei)0.64%；純(chun)度98.0%以(yi)上的(de)樣(yang)品(pin)136個(ge)，其(qi)中(zhong)蜀豐6608、長油(you)(you)2號、龍(long)庭100、南油(you)(you)雜1號、德選油(you)(you)158、均(jun)隆油(you)(you)5號、德油(you)(you)100、綠星(xing)油(you)(you)99、綿豐油(you)(you)5號、油(you)(you)研57、德盛油(you)(you)500、福油(you)(you)508、華皖油(you)(you)4號、德油(you)(you)8號和宜油(you)(you)16等(deng)品(pin)種(zhong)(zhong)(zhong)純(chun)度99.0%以(yi)上。

      此次油(you)(you)菜(cai)(cai)種(zhong)(zhong)子(zi)(zi)田(tian)間鑒定樣(yang)品占我市油(you)(you)菜(cai)(cai)推廣品種(zhong)(zhong)65%左右，具有較強代表性(xing)；從(cong)播種(zhong)(zhong)移栽、田(tian)間管理到現場(chang)調查均嚴格按種(zhong)(zhong)子(zi)(zi)質(zhi)量(liang)檢驗規程執(zhi)行，鑒定結果(guo)真實(shi)可(ke)信；抽樣(yang)品種(zhong)(zhong)鑒定出的雜株(zhu)(zhu)類型占比較上(shang)(shang)(shang)一年(nian)度繼續下降(jiang)(jiang)，尤其是對產量(liang)影響較大的早花株(zhu)(zhu)率(lv)下降(jiang)(jiang)明顯(xian)。本(ben)年(nian)度油(you)(you)菜(cai)(cai)種(zhong)(zhong)子(zi)(zi)平均純度較上(shang)(shang)(shang)年(nian)度（96.2%）提高了1.42%，有利于(yu)油(you)(you)菜(cai)(cai)良種(zhong)(zhong)發揮增(zeng)產潛力。每畝(mu)可(ke)增(zeng)收菜(cai)(cai)籽2公斤以上(shang)(shang)(shang)，以全(quan)市本(ben)年(nian)度種(zhong)(zhong)植123.6萬(wan)畝(mu)推算(suan)，就可(ke)增(zeng)收油(you)(you)菜(cai)(cai)籽247萬(wan)公斤以上(shang)(shang)(shang)。