| 摘要: |
| 为明确种植方式对糜子产量的影响，以抗旱高产糜子品种‘陕糜1号’为材料，常规等行距条播为对照（CK），研究等行距穴播（CX）、宽窄行条播（KT）和宽窄行穴播（KX）3种不同种植方式对糜子地上部干物质积累、顶三叶叶绿素含量及产量的影响。结果表明，糜子抽穗后，不同种植方式的地上部分干物质积累量均呈现先上升后随植株衰老下降的趋势；叶片、叶鞘和茎秆干物质积累呈单峰变化趋势，在抽穗后14 d达到最大值；籽粒随着生育期推进呈"S"型增长趋势；顶三叶叶绿素相对含量（SPAD值）在抽穗14 d后总体呈下降趋势。CX、KT和KX 3种种植方式的干物质积累量、顶三叶叶绿素含量均显著高于CK；KX、KT 2种种植方式下的产量显著高于CX、CK，但CX与CK的产量差异不明显。综合分析显示，因地制宜选择宽窄行种植方式是糜子增产增效的关键栽培措施。 |
| 关键词: 糜子 种植方式 干物质积累 SPAD值 |
| DOI：10.11841/j.issn.1007-4333.2017.12.04 |
| 投稿时间：2016-11-15 |
| 基金项目:十二五国家科技支撑计划（2014BAD07B03） |
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| Effects of different planting patterns on the dry matter accumulation and yield of broomcorn millet |
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SONG Yanli1, ZHANG Dongqi1, ZHAO Tao1, WANG Ruihao1, HUANG Guibin1, LIANG Jibao2, GAO Xiaoli1
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| (1.College of Agronomy/Arid State Key Laboratory of Crop Stress Biology, Northwest A & F University, Yangling 712100, China;2.Agricultural Extension Station of Shenmu County, Shenmu 719300, China) |
| Abstract: |
| In order to clarify the effects of planting patterns on the yield of millet,millet variety ‘Shanmi 1’ was taken as study material.The effects of sowing in equal bunch planting (CX),sowing in wide-narrow drill (KT),sowing in wide-narrow bunch planting (KX) and sowing in equal drill (CK) on the above-ground dry matter accumulation,leaf chlorophyll content and yield were studied as control.The results showed that the above-ground dry matter accumulation increased of different planting patterns after heading and then decreased with the senescence of plants.The dry matter accumulation of leaf,sheath and stem reached the maximum value 14 d after the heading;Grain displayed "S" type growth trend with the growth of plant;The SPAD value of the top three leaves decreased.The dry matter accumulation and chlorophyll content of the top three leaves in X,KT,and KX were significantly higher than in CK.The yield of KX and KT was significantly higher than that of CX and CK,there was no significant difference between CK and CX.Comprehensive analysis showed that choosing wide-narrow row planting pattern according to local conditions was the key to increase the production and efficiency of broomcorn millet. |
| Key words: broomcorn millet planting pattern accumulation of dry matter SPAD |
