Impact of weedy rice populations on the growth and yield of direct-seeded and transplanted rice

被引：21

作者：

Cao, Qian Jin ^{[1
]}

Li, Bo ^{[1
]}

Song, Zhi Ping ^{[1
]}

Cai, Xing Xing ^{[1
]}

Lu, Bao-Rong ^{[1
]}

机构：

[1] Fudan Univ, Minist Educ Key Lab Biodivers Sci & Ecol Engn, Inst Biodivers Sci, Shanghai 200433, Peoples R China

来源：

WEED BIOLOGY AND MANAGEMENT | 2007年 / 7卷 / 02期

关键词：

competition; cultivation; Oryza spontanea; rice;

D O I：

10.1111/j.1445-6664.2007.00241.x

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

To examine the impact of weedy rice (Oryza sativa L. f. spontanea) populations on the growth and yield of direct-seeded and transplanted rice (Oryza sativa), a field experiment with a random two-factor design that included cultivation methods (direct-seeding and transplanting) and the density of weedy rice (0, 5, 25, and 125 plants per m(2)) was conducted. The data from the experiment showed that weedy rice had a significantly poorer performance in the direct-seeded fields than in the transplanted fields in terms of its vegetative (plant height) and reproductive traits (panicle and seed production). In contrast, with the interference of weedy rice, cultivated rice showed an improved performance in the direct-seeded fields than in the transplanted fields, with a significantly higher tiller production and grain yield. The results suggest that cultivated rice can tolerate more successfully the infestation of weedy rice in direct-seeded fields because of its enhanced competitive ability compared to that in transplanted fields.

引用

页码：97 / 104

页数：8

共 23 条

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