河北农业科学
河北農業科學
하북농업과학
JOURNAL OF HEBEI AGRICULTURAL SCIENCES
2014年
2期
32-35
,共4页
小麦%施氮量%群体密度%产量%产量构成
小麥%施氮量%群體密度%產量%產量構成
소맥%시담량%군체밀도%산량%산량구성
Wheat%Nitrogen fertilizer rate%Pop-ulation density%Yield%Yield components
为了明确冬小麦生产上合理的施氮量，2012～2013年在河北省南部曲周县白寨乡北油村某农户地块，进行了不同施氮水平对冬小麦群体性状及产量的影响试验。试验设施氮量0（ CK ）、120、180、240和300 kg/hm2计5个处理，其中50％作底肥、50％在拔节期追施，测定了不同施氮量处理的冬小麦生育期群体数量、植株性状、产量及产量构成因素，并进行了施氮量与产量和产量构成因素之间的相关分析。结果表明：不同施氮量处理的小麦成穗率无显著性差异，施氮量为180～240 kg/hm2时可满足构建合理群体的需要；随着施氮量的增加，小麦单位面积成穗数呈先增加后减少趋势，千粒重呈先降低后增加趋势，但穗粒数无明显变化，最终产量呈先提高后降低趋势。本研究条件下，施氮量与产量的关系式方程为y＝-0.0268x2＋9.0371x ＋6114.7，施氮量对产量呈报酬递减型，当施氮量为168.6 kg/hm2时产量达到最高，此时小麦产量为6876.5 kg/hm2。
為瞭明確鼕小麥生產上閤理的施氮量，2012～2013年在河北省南部麯週縣白寨鄉北油村某農戶地塊，進行瞭不同施氮水平對鼕小麥群體性狀及產量的影響試驗。試驗設施氮量0（ CK ）、120、180、240和300 kg/hm2計5箇處理，其中50％作底肥、50％在拔節期追施，測定瞭不同施氮量處理的鼕小麥生育期群體數量、植株性狀、產量及產量構成因素，併進行瞭施氮量與產量和產量構成因素之間的相關分析。結果錶明：不同施氮量處理的小麥成穗率無顯著性差異，施氮量為180～240 kg/hm2時可滿足構建閤理群體的需要；隨著施氮量的增加，小麥單位麵積成穗數呈先增加後減少趨勢，韆粒重呈先降低後增加趨勢，但穗粒數無明顯變化，最終產量呈先提高後降低趨勢。本研究條件下，施氮量與產量的關繫式方程為y＝-0.0268x2＋9.0371x ＋6114.7，施氮量對產量呈報酬遞減型，噹施氮量為168.6 kg/hm2時產量達到最高，此時小麥產量為6876.5 kg/hm2。
위료명학동소맥생산상합리적시담량，2012～2013년재하북성남부곡주현백채향북유촌모농호지괴，진행료불동시담수평대동소맥군체성상급산량적영향시험。시험설시담량0（ CK ）、120、180、240화300 kg/hm2계5개처리，기중50％작저비、50％재발절기추시，측정료불동시담량처리적동소맥생육기군체수량、식주성상、산량급산량구성인소，병진행료시담량여산량화산량구성인소지간적상관분석。결과표명：불동시담량처리적소맥성수솔무현저성차이，시담량위180～240 kg/hm2시가만족구건합리군체적수요；수착시담량적증가，소맥단위면적성수수정선증가후감소추세，천립중정선강저후증가추세，단수립수무명현변화，최종산량정선제고후강저추세。본연구조건하，시담량여산량적관계식방정위y＝-0.0268x2＋9.0371x ＋6114.7，시담량대산량정보수체감형，당시담량위168.6 kg/hm2시산량체도최고，차시소맥산량위6876.5 kg/hm2。
In order to clarify the reasonable amount of nitrogen in the production of winter wheat , one-year different nitrogen levels farm experiment from 2012 to 2013 was conducted in Quzhou Country which is in the southern of Hebei Province to study the number of groups, yield and yield components factors at the growth period of winter wheat, then conducted a correlation analysis between nitrogen amount and yield and its factors , there were five nitrogen amount treatments including 0 ( CK) , 120, 180, 240 and 300 kg/hm2 , and 50% of them as base fertilizer, anather 50% was applied at jointing.The results showed that there were no significant difference on wheat spike rate between different nitrogen treatment, the nitrogen amount of 180-240 kg/hm2 could construct a reasonable group.With the increase of nitrogen, wheat spike rate per area was increased first and then decreased, 1000-grain weight was decreased first and then increased, but the number of grains per spike had no obvious change, finally, the yield was increased first and then decreased.Under the conditions of this study, the relation equation between nitrogen application amount and yield was y =-0.026 8x2 +9.037 1x +6 114.7, when the nitrogen amount was 168.6 kg/hm2 , the wheat yield reached the highest 6 876.5 kg/hm2.
