摘要
本研究于１９８９～１９９４年对４５个籼稻品种（包括杂交籼稻组合和制种亲本品种）进行的观察结果表明、籼稻一生有两类葫芦叶特征出现。第一类出现在移栽稻的分蘖期，由植伤引起，Ｎ叶期移栽，第（Ｎ＋２）叶与第（Ｎ＋３）叶为第一类葫芦叶；第二类出现在幼穗分化期，由拔节引起，这类葫芦叶的第一片倒数叶龄期为品种伸长节间数减２，一般４个伸长节间的品种最后有２片葫芦叶，５个伸长节间的品种最后有３片葫芦叶，６个伸长节间的品种最后有４片葫芦叶。上述葫芦叶特征可作为判断水稻大田叶龄和生育进程的诊断指标，用以判断杂交制种父母本叶龄和幼穗分化进程，并据此进行花期预测和调节；还可作为水稻科学施肥和田间管理的依据。
Observations made by the authors in 1989～1994 on 45 rice varieties including hybridized combination and seed parent varieties showed that the rice produced two types of calabash-shaped leaves during the life cycle;the first type of calabash-shaped leaves emerged at tillering stage of transplanted rice,resulting from damage by transplantation,when rice shoots were transplanted at N-leaf stage,the (N + 2)th leaf and the (N + 3) th leaf were usually first type of calabash-shaped leaves;second type of calabash-shaped leaves emerged at panicle initiation stage,resulting from elongation,the age of the first leaf of this type from bottom was the number of elongated internodes of related variety minus 2 ; usually the varieties with 4 elongated internodes produced at last 2 calabash-shaped leaves,those with 5 elongated internodes produced 3 calabashshaped leaves,those with 6 elongated inter-nodes produced 4 calabash-shaped leaves. The features of calabash-shaped leaves can be used as diagnosis criteria for adjuding rice leaf age in field as well as rice growth process,and so the flowering stage will be forecasted and regulated by determining leaf age of hybrid' s seed parents and panicle initiation process. They can be also used as the basis of making scientifically fertilizer application and field management.
出处
《上海农业学报》
CSCD
1996年第1期83-89,共7页
Acta Agriculturae Shanghai
关键词
水稻
葫芦叶
叶龄
幼穗分化
花期预测
肥水管理
Rice
Calabash-shaped leaf
Leaf age
Panicle initiation
Forecast of flowering stage
Management of manuring and watering
