花期追施氮肥对菜用大豆AC10生理指标及产量影响的研究

选用激光诱变育成的菜用大豆品种AC10，通过在开花初期追施不同的氮素水平，研究其对主要生理指标及产量和产量构成因素的影响。结果表明：花期追施适量氮肥，能明显提高菜用大豆品种AC10植株花后叶面积指数、叶绿素含量、光合速率和荚果可溶性糖含量，从而提高鲜豆荚产量，其中以每公顷追施75．0kg-112．5kg尿素，单株鲜豆荚产量达到92．15g～90．37g，比对照增产8．0％～7．1％；但过量追施氮肥，影响植株生长．造成减产，当每公顷追施尿素达150kg时，单株鲜豆荚产量为81．19g，比对照减产5．1％。

Effect of Dressing Nitrogen on Physiological Index and Yield Vegetable of Soyben Variety AC10 at Anthesis

The effect of different nitrogen levels on physiological indexes,yield and yield factors were studied by dressing different nitrogen levels at the anthesis of vegetable soybean strain AC10.The results showed that the fresh pod yield improved sigmificantly as leaf area index, chlorophyll content, Pn and the content of soluble sugar of pod increased after flowering by dressing the proper nitrogen at anthesis. Especially,the fresh pod yield of single plant obtained 92.5 g ～ 90.37 g. And, compared to ck, increased by 8.0 %～7.1% with 75.0 kg/hm~2～112.5 kg/hm~2 urea. On the contrary, the fresh pod yield,single plant 81.19 g, decreased by 5.1%with 150 kg/hm~2 urea.