中国水稻科学 ›› 2014, Vol. 28 ›› Issue (2): 211-216.DOI: 10.3969/j.issn.1001-7216.2014.02.014

• 研究简报 • 上一篇    下一篇

杂草稻对东北移栽稻群体生长环境及产量的影响

马殿荣*,孔德秀,高齐,徐凡,赵明辉,唐亮,徐正进,陈温福*   

  1. 沈阳农业大学 水稻研究所/农业部东北水稻生物学与遗传育种重点实验室/北方超级粳稻育种教育部重点实验室,  沈阳110866;
  • 收稿日期:2013-05-05 修回日期:2013-11-11 出版日期:2014-03-10 发布日期:2014-03-10
  • 通讯作者: 马殿荣*,陈温福*
  • 基金资助:

    国家自然科学基金资助项目(31271687); 辽宁省自然科学基金资助项目(20102192); 沈阳农业大学国家自然科学基金启动基金资助项目(20082002); 农业部现代农业技术体系建设专项资金资助项目(CARS0112)。

Effects of Weedy Rice Competition on Yield and Paddy Environment of Transplanted Rice in Northeast China

MA Dianrong*, KONG Dexiu, GAO Qi, XU Fan,  ZHAO Minghui, TANG Liang, XU Zhengjin, CHEN Wenfu*   

  1. Rice Research Institute, Shenyang Agricultural University, Key Laboratory of Northeast  China Rice Biology and Breeding, Ministry of Agriculture, Key Laboratory of Northern japonica Super Rice Breeding, Ministry of Education, Shenyang 110866, China;
  • Received:2013-05-05 Revised:2013-11-11 Online:2014-03-10 Published:2014-03-10
  • Contact: MA Dianrong*,CHEN Wenfu*

摘要: 在大田条件下研究了杂草稻WR0312对移栽稻沈农265的产量及稻田环境的影响。结果表明, 当栽培田中杂草稻密度超过3株/m2时,移栽稻沈农265的单株穗数、每穗粒数、结实率和千粒重极显著降低,产量极显著下降;移栽稻群体在8:00和16:00时中(80 cm)、下部(40 cm)照度极显著弱于对照,群体透光率降低;日平均气温、白天平均气温和日最高气温极显著降低;群体日平均湿度、白天平均湿度和日最高湿度显著升高。杂草稻密度增大导致栽培稻群体透光率降低,群体湿度加大,稻田群体环境恶化,最终导致减产。

关键词: 杂草稻, 移栽, 产量, 稻田环境, 竞争

Abstract: Effects of weedy rice on transplanted rice and paddy environment were investigated in a field experiment with weedy rice WR0312 and cultivated rice Shennong 265 as materals. It showed that at a weedy rice density over 3 plants per square meter, panicle number per plant, grain number per panice, seed setting rate, 1000grain weight and yield of Shennong 265    significantly decreased. The illuminance in the middle(80 cm)to lower part(40 cm)of the population of Shennong 265 was dramatically weaker than those of control at 8:00 am and 4:00 pm. In addition, the daily average and maximum humidity   increased significantly. The rising density of weedy rice led to the decline of population light transmittancand, increase of population humidity in cultivated rice,  resulting in the environmental deterioration and the decline of yield.

Key words: weedy rice, transplanting, yield, paddy environment; competition

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