| 张建雄,刘春惊,张保军,谭永军,陈瑞萍,陈耀锋,李中国.南疆杏棉复合系统条件下棉花冠层的光特性[J].干旱地区农业研究,2010,28(4):173~178 |
| 南疆杏棉复合系统条件下棉花冠层的光特性 |
| Study on photosynthetic characteristics of cotton canopy under apricot-cotton system in the south Xinjiang |
| |
| DOI：10.7606/j.issn.1000-7601.2010.04.32 |
| 中文关键词: 杏棉复合系统 棉花 光照强度 光合有效辐射 叶面积指数 |
| 英文关键词:apricot-cotton system cotton intensity of illumination photosynthetic active radiation leaf area index |
| 基金项目:国家科技支持计划项目(2007BAD36BO3-3) |
|
| 摘要点击次数: 204 |
| 全文下载次数: 126 |
| 中文摘要: |
| 为了探明杏棉复合系统条件下棉花冠层光合特性及遮荫对棉花产量的动态影响,以中棉43号为试材,研究了4种复合系统下棉花冠层光照强度、光合有效辐射(PAR)、叶面积指数(LAI)及产量构成要素。结果表明:宽幅棉花冠层光照强度、PAR、LAI优于窄幅棉花(即:6 m×4 m>6 m×3 m>4 m×2 m>4 m×1.5 m),棉花冠层各光合指标在间作带中从东到西呈现出由小增大再减小的变化趋势;4种复合系统下棉花产量及主要生长指标有较大差异,其中各系统间籽棉产量、蕾铃脱落率、收获株数均达到极显著差异,6 m×4 m模式下平均籽棉产量达到6 092.59 kg/hm2,是4 m×1.5 m模式的3.1倍;各复合系统产值与单作田产值的大小表现为6 m×4 m>6 m×3 m>CK>4 m×1.5 m>4 m×2 m。 |
| 英文摘要: |
| A study was carried out to find out the photosynthetic characteristics of cotton canopy and dynamic effects
of shading on cotton yield under apricot cotton system. With the cotton variety of Zhongmian 43 as test material and under four types of apricot cotton system，the cotton canopy intensity of iluminat ion，photosynthetic active radiat ion, leaf area index and constituent elements of yield were studied. The result showed that:①The canopy intensity，photosynthetic active radiation, leaf area index of cotton sowed in broader width is better than that in narrower width (6m×4m>6 m×3m>4m×2m>4 m×1.5 m), and the graphic trends increased at first and then decreased.②The cotton produe-tion and the main growth parameters are extremely different under the four different modes : the cotton yield，abscission rate of boll, plant quantity of harvest is significant ly different , and the average cotton yield reached 6 092. 59 kg/ hm2 under the modeof 6 m×4 m, which is 3.1 times of that under the mode of 4 m×1.5 m mode.③The order of output val-ue of both monoculture and apricot-cotton systemis: 6m×4m>6m×3 m >CK>4m×1.5m>4 m×2 m. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| | |