[1]崔娟,董莉环,吴磊,等.同期稗草对东北春大豆生长的影响及其经济阈值[J].大豆科学,2016,35(06):992-996..[doi:10.11861/j.issn.1000-9841.2016.06.0992]
　CUI Juan,DONG Li-huan,WU Lei,et al.Influence of Echinochloa Crusgalli on the Growth of Spring Soybean and its Economic Threshold in Northeast China[J].Soybean Science,2016,35(06):992-996..[doi:10.11861/j.issn.1000-9841.2016.06.0992]
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同期稗草对东北春大豆生长的影响及其经济阈值

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第35卷 期数: 2016年06期 页码: 992-996. 栏目: 出版日期: 2016-11-20
Title:
Influence of Echinochloa Crusgalli on the Growth of Spring Soybean and its Economic Threshold in Northeast China
作者:
崔娟1;  董莉环2; 吴磊3; 史树森1
（1.吉林农业大学 农学院，吉林 长春 130118； 2.本溪市桓仁县农业技术推广中心，辽宁 本溪 117200； 3.长春市农业技术推广站，吉林 长春130033）
Author(s):
CUI Juan1;  DONG Li-huan2;  WU Lei3;  SHI Shu-sen1
（1.College of Agronomy, Jilin Agricultural University, Changchun 130118, China; 2.Agricultural Technology Extension Center of Huairen County, Benxi 117200, China; 3.Agricultural Technology Extensiou Station of Changchun City, Changchun 130033, China）
关键词:
稗草; 大豆; 产量性状; 经济阈值
Keywords:
Echinochloa crusgalli;  Soybean;  Yield properties;  Economic threshold
DOI:
10.11861/j.issn.1000-9841.2016.06.0992
文献标志码:
A
摘要:
稗草是中国北方大豆田的恶性杂草，危害大豆生长发育，降低大豆产量，对大豆生产造成严重威胁。本研究在大田条件下采用添加系列试验和拟合函数关系模型的方法，研究了稗草与大豆的竞争关系。结果表明，在稗草的竞争干扰下，大豆单株荚数，产量均随稗草密度的增加而逐渐降低，而株高没有显著变化。直线函数能较好地拟合大豆产量与稗草密度之间的关系y=-12.863x+2 720.396（R2=0.982；F=217.340；P=0.001），直线函数亦能较好的拟合大豆产量损失与稗草密度之间的关系y=0.467x+1.017（R-2=0.982；F= 217.352；P=0.000 1）。大豆田稗草人工除草的经济阈值为24.65～27.89株·m-2，90%乙草胺乳油、12.5%烯禾啶乳油、5%精喹禾灵乳油化学防除稗草的经济阈值分别为2.79～3.39，3.45～4.12和3.18～3.95株·m-2。
Abstract:
Echinochloa crusgalli is a troublesome weed in Northern China and seriously damages soybean growth and reducing soybean yield in soybean fields. A field experiment was carried out to study the effects of E crusgalli of different densities (0, 20, 40, 60, 80 and 100 plant·m-2) on the soybean growth and yield by the method of additive series experiment Results showed that increasing density of E crusgalli significantly reduced soybean’s pods per plant and yield.There was no significant impact on soybean plant height. The linear function model was the best in describing the relationship between E crusgalli density and soybean yield as y=-12.863x+2 720.396(R2=0.982; F=217.340; P=0.001); while the linear function model as y=0.467x+1.017(R2=0.982; F=217.352; P=0.000 1) was better for describing the relationship between E crusgalli-density and yield loss.Economic threshold of E crusgalli control was 24.65-27.89 plants·m-2 for manual weeding, while for the chemical herbicides of 90% acetochlor EC, 12.5% sethoxydim EC, 5% quizalofopP EC were 2.79-3.39，3.45-4.12 and 3.18-3.95 plant·m-2, respectively

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备注/Memo

基金项目：国家现代农业产业技术体系建设专项（CARS-04）。

第一作者简介：崔娟（1982-），女，博士，主要从事大豆有害生物综合治理等研究。E-mail：826892236@qq.com。
通讯作者：史树森（1963-），男，教授，博导，主要从事农业害虫综合治理与昆虫资源利用研究。E-mail:sss.63@263.net。

更新日期/Last Update: 2016-12-09