[1]吴云艳.杂草稻竞争对栽培稻氮素积累量、氮素利用率及产量的影响[J].江苏农业学报,2018,(02):241-244.[doi:doi:10.3969/j.issn.1000-4440.2018.02.001]
　WU Yun-yan.Effect of weedy rice competition on the nitrogen accumulation, nitrogen utilization efficiency and yield of cultivated rice[J].,2018,(02):241-244.[doi:doi:10.3969/j.issn.1000-4440.2018.02.001]
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杂草稻竞争对栽培稻氮素积累量、氮素利用率及产量的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年02期
页码:
241-244
栏目:
遗传育种·生理生化
出版日期:
2018-04-25

文章信息/Info

Title:
Effect of weedy rice competition on the nitrogen accumulation, nitrogen utilization efficiency and yield of cultivated rice
作者:
吴云艳
（辽东学院农学院，辽宁丹东118003）
Author(s):
WU Yun-yan
(College of Agronomy, Eastern Liaoning University, Dandong 118003, China)
关键词:
栽培稻; 杂草稻; 氮素积累量; 氮素利用率; 产量
Keywords:
cultivated rice; weedy rice; nitrogen accumulation; nitrogen utilization efficiency; yield
分类号:
S511.053
DOI:
doi:10.3969/j.issn.1000-4440.2018.02.001
文献标志码:
A
摘要:
以栽培稻沈农265和杂草稻WR04-12为试验材料，研究杂草稻竞争对栽培稻氮素积累量、氮素利用率及产量的影响。结果表明，杂草稻竞争降低了栽培稻的氮素积累量和产量。栽培稻氮素积累量与产量呈极显著正相关。齐穗期和灌浆期的氮素积累量对产量影响较大，栽培稻氮素积累量在这2个时期受杂草稻密度影响较大，说明杂草稻竞争导致栽培稻氮素积累量降低是造成栽培稻产量降低的重要原因之一。杂草稻竞争明显降低了栽培稻的氮素利用率、农学氮素利用率和氮肥偏因素生产力。在杂草稻危害严重时增加氮肥用量，栽培稻氮素利用率降低得更多，并且栽培稻产量的提升幅度较小。
Abstract:
Shennong 265 and WR04-12 were used to research the effect of weedy rice competition on the nitrogen accumulation, nitrogen utilization efficiency and yield of cultivated rice. It indicated that the nitrogen accumulation and yield of cultivated rice were reduced by the competition of weedy rice. The nitrogen accumulation of cultivated rice was significantly positive correlated with yield. At the heading stage and filling stage, the nitrogen accumulation had a significant effect on the yield and was influenced greatly by the density of weed rice. The results showed that the decrease of nitrogen accumulation in cultivated rice caused by the competition of weedy rice was one of the important reasons for reducing the yield of cultivated rice. The nitrogen utilization efficiency, agronomic nitrogen utilization efficiency and the partial factor productivity of cultivated rice were dramatically decreased by competition of weedy rice. Increasing the amount of nitrogen fertilizer will heavily decrease the utilization efficiency of cultivated rice, and it makes little increase for yield of cultivated rice in the area seriously affected by weedy rice.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2017-11-21 基金项目：辽宁省教育厅基金项目 (L2012473) 作者简介：吴云艳( 1978-)，女，吉林梅河口人，博士，讲师，主要从事水稻高产栽培研究。（E-mail）wyunyan9645@sina.com
更新日期/Last Update: 2018-05-04