摘要
本试验系统地研究了春玉米氮素营养的吸收、积累、分配与转移规律。结果表明，春玉米生育期间对氮素的吸收量呈二次曲线变化；氮素的吸收速度呈单峰曲线变化，其峰值在出苗后６７ｄ左右，时值大喇叭口期．每生产１００ｋｇ籽粒需吸收Ｎ２．１９ｋｇ。
This experriment systematically studied the regularity of absorption accumu-lation distribution and translocation of No in spring maize.The results showed that.specdof N.absorptio shows a sigle peak curve,The peak value is 67d or so after seedyng emer-gence,inthe floret differentiation stage of the tassel.2.19kg N.was brequied Per 100kgkennels.
基金
内蒙古自治区科委八五攻关
关键词
春玉米
氮素
吸收
氮素分配
玉米
spring maize,Nitrogcn absorption,Nitrogen distribution,Nitrogen trans-lation.
