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田佳源,张思宇,皇甫超河,田秀平,杨殿林,王慧,等.不同氮肥梯度下黄顶菊混植密度对玉米生长的影响[J].中国农学通报,2018,34(20):26-33.,et al.Effects of Flaveria bidentis Planting Density on Maize Growth Under Different Nitrogen Gradients[J].Chinese Agricultural Science Bulletin,2018,34(20):26-33
不同氮肥梯度下黄顶菊混植密度对玉米生长的影响
Effects of Flaveria bidentis Planting Density on Maize Growth Under Different Nitrogen Gradients
投稿时间:2017-10-23  修订日期:2017-12-08
DOI:10.11924/j.issn.1000-6850.casb17100073
中文关键词: 施氮梯度  混植密度  玉米  黄顶菊
英文关键词: nitrogen gradients  mixed planting proportion  maize  Flaveria bidentis
摘要点击次数: 118
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基金项目:国家自然基金青年科学基金项目“入侵植物黄顶菊DNA表观遗传多样性及其生态适应性机理的研究”(31401811);天津市应用基础与前 沿技术研究计划“入侵植物黄顶菊DNA表观遗传多样性研究”(青年项目15JCQNJC15300)。
作者单位E-mail
田佳源 天津农学院 tianjiayuan92@163.com 
张思宇 农业部环境保护科研监测所 461691444@qq.com 
皇甫超河 农业部环境保护科研监测所 huangfu24@163.com 
田秀平 天津农学院 tian5918@sohu.com 
杨殿林 农业部环境保护科研监测所 dianlinyang@yahoo.com.cn 
王慧 农业部环境保护科研监测所 wanghui03@caas.cn 
中文摘要:
      为明确氮素含量与黄顶菊入侵程度的关系及对玉米生长的影响,设置4 种施氮梯度和4 种玉米与黄顶菊混植比例,研究不同处理下玉米生长、光合和产量指标的变化。结果表明:不同生育期玉米的株高、茎粗和叶面积指数随黄顶菊混植密度的增加变化差异显著,且这种差异受氮肥施用量的影响;不同生育期玉米的SPAD值和净光合速率也同时受到施氮梯度和黄顶菊混植密度的影响;黄顶菊混植对玉米产量的影响随施氮梯度的增加而变化,当玉米/黄顶菊混植比例达到2:1 (A2),施氮梯度达到175 kg/hm2(T1)时,黄顶菊混植会对玉米产量产生显著影响;混植比例和施氮梯度对玉米生长和光合指标影响的交互效应随玉米生育时期发生变化,在玉米成熟期,混植比例和施氮梯度对玉米产量的影响有极显著交互效应。
英文摘要:
      To clarify the effects of nitrogen and intrusion degree of Flaveria bidentis on maize growth, four nitrogen levels and four mixed planting proportions of maize/Flaveria bidentis were set to study the changes of maize growth, photosynthesis and yield under different treatments. The results showed that under different growth stages, plant height, stem diameter and LAI of maize changed significantly with the planting density increase of Flaveria bidentis, and the difference was also influenced by nitrogen levels. The SPAD value and net photosynthetic rate of maize at different growth stages were also affected by the nitrogen application gradients and the density of mixed planting. The effects of the mixed planting on maize yield changed with the increase of nitrogen application. When the maize/Flaveria bidentis mixed planting proportion reached 2:1 (A2) and the nitrogen application rate reached 175 kg/hm2 (T1), the Flaveria bidentis mixed planting had significant effect on maize yield. The combined effect of mixed planting and nitrogen levels on maize growth and photosynthetic indexes varied with its development of growth periods. At maturing stage of maize, the effect of mixed planting and nitrogen application on maize yield had notable interaction.
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