摘要
1995～1996年在扬州春播苏玉糯1号,总施氮量225kg·hm-2.基苗肥与穗肥用量比为1∶2,其中基苗肥又分基施、1叶展施、4叶展施3个水平,穗肥分7叶展施、10叶展施2个水平,研究其对生产性能的影响.结果表明:基苗肥基施、穗肥7叶展施的处理产量最高,比其他处理增产13.52%～3381%.其中基苗肥基施比1叶展施、4叶展施分别增产12.39%、18.58%;穗肥7叶展施比10叶展施的处理增产11.20%.增产的主要原因促进了壮苗早发,培壮了茎秆,增加气生根数和穗粒数,提高了叶系的净同化率,提高了粒叶比与双穗率。
In 1995～1996, a waxy corn cultivar Suyunuo1 was applied 225 kg N per hectare with ratio 1∶2 of base or seedling to ear fertilizer that used time was 3 levels of base, leafage1 or leafage 4 than 2 levels of leafage 7 or Leafage 10. The results shown that treat of base than leafage 7 had highest grain yield that increased 13.52%～33.81% than others. Grain yield of base applied level was higher 12.39% than leafage1 and 18.58% than leafage 4. The ear fertilizer used on leafage 7 increased yield 11.20% than on leafage 10. The main effect on grain formation was that vigorous seedlings and plants had stronger stalk and brace roots and increased kernels formation and grain leaf ratio to improve NAR and dry matter accumulation.
出处
《扬州大学学报（自然科学版）》
CAS
CSCD
1999年第3期46-50,共5页
Journal of Yangzhou University：Natural Science Edition
基金
江苏省"八五"科技攻关项目
