| 摘要: |
| 为探索不同玉米品种间作对植株生长、生理参数及互补抗病增产效应，进一步挖掘玉米生产潜力。以‘先玉335’和‘农大372’为试验材料，设置‘先玉335’（单作），‘农大372’（单作），‘先玉335’∶‘农大372’为1∶1（间作）3种处理，研究植株生长、干物质积累、生理参数、产量及对玉米大斑病的抗性特征。结果表明：‘先玉335’和‘农大372’间作对株高无明显影响，后期增加了茎粗和总绿叶面积并促进了干物质的积累；2个品种间作较单作提高了可溶性糖和蛋白含量，其中可溶性糖在灌浆和成熟期分别显著提高41.91%和47.58%， 47.84 %和36.55 %，SOD（超氧化物歧化酶）、POD（过氧化物酶）和MDA（丙二醛）活性升高，而O2（活性氧）含量降低，叶面积指数（LIA）增大，植株紧凑，导致GA3（生长素）含量升高，ABA（脱落酸）含量降低，其中灌浆和成熟期JZ-‘农大372’较DZ-‘农大372’分别显著升高28.86 %和22.89 %，吐丝和灌浆期JZ-‘先玉335’较DZ-‘先玉335’分别显著降低12.99 %和9.45 %；间作通过增加粒重来提高产量，每公顷产量分别显著提升9.61 %和13.82 %，此外，间作也提高了玉米对大斑病的抗性，病情指数分别显著降低56.75 %和54.29 %。‘先玉335’和‘农大372’间作可通过调控群体结构来延缓后期叶片衰老，提高产量并增强对玉米大斑病的抗性。 |
| 关键词: 玉米 间作 生长 生理参数 产量 互补抗病 |
| DOI：10.13610/j.cnki.1672-352x.20210909.011 |
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| 基金项目:“十三五”国家重点研发计划课题三（2018YFD0300503）资助。 |
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| Study on complementary resistance effect and increasing yield in different maize (Zea mays L.) genotypes under intercropping treatment |
| DONG Weixin,HAN Lijie,LI Xiangling,ZHANG Yuechen |
| (The Open University of Hebei, Shijiazhuang 050080;College of Agronomy and Biotechnology, Hebei Normal University of Science and Technology, Changli 066600;Agricultual Unibersity of Hebei, Key Laboratory of Crop Growth Regulation of Hebei Province, Baoding 071001) |
| Abstract: |
| In order to explore the effects of intercropping on plant growth, physiological parameters, yield and complementary disease, production potential of maize was further exploitation .Establishment of ‘Xianyu 335’ (single cropping), ‘Nongda 372’ (single cropping) and ‘Xianyu 335’∶‘Nongda 372’=1∶1(intercropping) three treatments, to study on plant growth, dry matter accumulation, physiological parameters, yield and resistance spot.The results demonstrated that interaction between ‘Xianyu 335’and ‘Nongda 372’had no obvious effect on plant height, but increased stem diameter, total green leaf area and promoted dry matter accumulation; Two varieties intercropping increased soluble sugar and protein content , Furthermore, soluble sugar content increased by 41.91 % and 47.58 %, 47.84 % and 36.55 % respectively in filling and maturation stage, SOD, POD and MDA activity increased while reactive oxygen (O2) content decreased; Leaf area index (LAI) increased and plant became compact, resulting in GA3 (gibberellin) content increased, However, ABA(abscisic acid) content decreased, of which JZ- ‘Nongda 372’increased significantly by 28.86% and 22.89 % compared with DZ-‘Nongda 372’in filling and maturation stage, However, JZ- ‘Xianyu 335’decreased significantly by 12.99% and 9.45% compared with DZ- ‘Xianyu 335’in spinning and filling stage; The yield increased by increasing grain weight under intercropping treatment and increased by 9.61 % and 13.82 % per hectare respectively. In addition, intercropping treatment also increased resistance of leaf |
| Key words: maize intercropping plant growth physiological parameters yield complementary resistance |
