移栽行距和密度对新稻36号叶面积指数及干物质积累与分配的影响
2014-10-21朱小霞王奉斌文孝荣唐福森袁杰张燕红赵志强布哈丽且木蔡栋
朱小霞 王奉斌 文孝荣 唐福森 袁杰 张燕红 赵志强 布哈丽且木 蔡栋
摘要 [目的] 为新疆水稻品种高产栽培提供理论依据和技术支持。[方法] 选用新疆自育的水稻品种新稻36号为试验材料,研究不同移栽行距与种植密度对其叶面积指数及干物质积累分配的影响。[结果] 不同移栽行距和密度处理下,新稻36号全生育期LAI呈单峰曲线,干物质积累量呈上升趋势,且干物质积累量与干物质分配比率因不同移栽行距、密度处理表现出一定的差异。在适宜的行距下,光合有效辐射强,叶面积指数达最高值,干物质积累量大。[结论] 在生产上,要获得新稻36号高产,必须适宜密植。
关键词 新稻36号;移栽行距;密度;叶面积指数;干物质积累
中图分类号 S511 文献标识码 A 文章编号 0517-6611(2014)33-11648-02
Effect of Transplanting Row-spacing and Density on LAI, Accumulation and Distribution of Dry Matter of Xindao 36
ZHU Xiao-xia1, WANG Feng-bin1,2*, WEN Xiao-rong1 et al
(1. Wensu Rice Experiment Station, Xinjiang Academy of Agricultural Sciences, Aksu, Xinjiang 843000; 2.Institute of Nuclear and Biological Technologies, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091 )
Abstract [Objective] The research aimed to provide theoretical basis and technical support for the high-yield cultivation of Xinjiang rice varieties. [Method] Selecting Xinjiang self-bred rice varieties Xindao36 as test materials, the effects of different transplanting row-spacing and planting density on their LAI and accumulation and distribution of dry matter in Xindao 36 were studied. [Result] In the treatments of different transplanting row-spacing and density, LAI of Xindao36 showed a single-peak curve in whole growth period, and the accumulation of dry matter showed an increasing trend. The accumulation amount of dry matter and distribution rate of dry matter showed some differences with different transplanting row-spacing and density. Under the proper transplanting spacing, photosynthetically active radiation was intensive; LAI and dry matter accumulation were the highest. [Conclusion] In the production, dense planting was suitable for obtaining high yield of Xindao 36.
Key words Xindao36; Transplanting row-spacing; Density; LAI; Dry matter accumulation
基金项目 新疆农业科学院青年基金项目(xjnkq-2013041);自治区科技支撑项目(201331120)。
作者简介 朱小雪(1984-),女,甘肃甘谷人,研究实习员,从事水稻育种与栽培工作。*通讯作者,研究员,从事水稻遗传育种与栽培研究。
收稿日期 2014-10-20
水稻是新疆主要的粮食作物之一,其产量的高低直接影响到新疆人民对大米的需求。为了提高水稻的单产,改变其种植方式和种植密度是非常关键的措施,而水稻叶面积指数和干物质积累是群体结构的主要量化指标,前人在水稻叶面积指数和干物质积累方面已进行了较多的研究报道[1-5]。新疆光热资源充足、昼夜温差大,对这种气候条件下水稻的群体生长规律尚缺乏系统研究报道。笔者选用新疆自育的水稻品种新稻36号配以相应的移栽行距与种植密度,研究其对叶面积指数及干物质积累的影响,旨在为新疆水稻品种高产栽培提供理论依据和技术支持。……
