摘要
[目的]研究杂交中稻—再生稻栽培的适宜密度。[方法]以培两优288为材料,设计30.32万、46.62万、59.18万、76.92万株/hm24个移栽密度,采用随机区组设计,3次重复,研究移栽密度对产量的影响。[结果]4个处理中,头季稻、再生稻和总产都以46.62万株/hm2基本苗的处理最高,分别为8728.5、5711.5、14440.0 kg/hm2。该处理虽然密度不大,但群体结构合理,有效穗、实粒数、结实率、千粒重适中,因而产量高。[结论]再生稻要高产,头季稻和再生稻必须要有合理的群体结构。
[ Objective] The study researches suitable transplanting density of hybrid medium rice ratoon rice. [ Method ] With two-line hybrid rice of Peiliangyou 288 as tested materials, designing 4 transplanting density of 30.32 × 10^5, 46.62 × 10^5 , 59.18 × 10^5 and 76.92 × 10^5 plants/hm^2, using randomized block design and 3 repeats, the effect of transplanting density on yield is researched. [ Result] The rice yield is the highest when the density is 4. 662 × 10^5 plants/hm^2, the yield is 8728.5,5711.5 and 14 440.0 kg/hm^2, respectively. The density is not big, but lhe population slrueture is reasonable under this treatment, effective panicle number, filled grains seed-setting rate and 1 000- grain weight are moderate, the yield is high. [ Conclusion] Ratoon rice need high yield, main crop rice and ratoon rice need have reasonable population structure.
出处
《安徽农业科学》
CAS
北大核心
2009年第14期6387-6388,共2页
Journal of Anhui Agricultural Sciences
关键词
两系杂交水稻
中稻
再生稻
高产栽培
冷浸田
Two-line hybrid rice
Medium rice
Ratoon rice
High-yielding culture
Cold-waterlogged field
