| 耕作方式对水稻光合及根系生理特性的影响 |
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| 引用本文： | 全妙华,胡爱生,欧立军,胡冬炎,李必湖.耕作方式对水稻光合及根系生理特性的影响[J].杂交水稻,2012,27(3):71-75. |
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| 作者姓名： | 全妙华 胡爱生 欧立军 胡冬炎 李必湖 |
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| 作者单位： | 1. 怀化学院生命科学系,湖南 怀化,418008
2. 怀化市共生农业系统工程研究所,湖南 怀化,418000 |
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| 基金项目： | 植物学湖南省重点建设学科资助 |
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| 摘 要： | 以9311为材料,对水稻垄作和传统耕作方式下的光合特性、根系特点和主要农艺性状进行了比较研究.结果表明,与传统耕作方式相比,垄作方式下水稻的光合速率(PN)、气孔导度(g.)和水分利用率(WUE)等光合参数的值均显著增大,根条数、根干重、根系活力和根系CAT、SOD、POD酶活性极显著提高,MDA含量极显著下降,分蘖数和有效穗数分别增加16.67％和33.98％.垄作主要通过改善根系吸收,增加分蘖和有效穗数及提高光合速率,达到增产的目的.
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| 关 键 词： | 水稻 垄作 光合特性 根系特点 |
Effects of Tillage Mode on Characteristics of Photosynthesis and Root Growth of Rice |
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| QUAN Miao-hua
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HU Ai-sheng
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OU Li-jun
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HU Dong-yan
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LI Bi-hu.Effects of Tillage Mode on Characteristics of Photosynthesis and Root Growth of Rice[J].Hybrid Rice,2012,27(3):71-75. |
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| Authors: | QUAN Miao-hua HU Ai-sheng OU Li-jun HU Dong-yan LI Bi-hu |
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| Institution: | 1.Department of Life Science,Huaihua University,Huaihua,Hunan 418008,China; 2.Symbiosis Institute of Agricultural Engineering of Huaihua,Huaihua,Hunan 418008,China) |
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| Abstract: | A comparative study was conducted between the cultivation of ridge tillage(RT) and the cultivation of conventional tillage(CT) on the photosynthetic characteristics,root growth and major agronomic characters with 9311,a rice variety,as the material.The results showed that,compared with CT,RT had a statistically significant increase in photosynthetic characteristics including photosynthetic rate,stomatal conductance and water use efficiency.With regard to root growth characters,RT had much more roots per plant,higher root dry weight per plant,stronger root vigor and higher activity of CAT,SOD,POD of roots but lower MDA content of roots.Besides,the number of tillers and effective panicles per plant of RT was greatly increased by 16.67% and 33.98%,respectively.It is concluded that RT can increase rice yield by improving root absorption,increasing tillers and effective panicles and raising photosynthesis of rice. |
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| Keywords: | rice ridge tillage photosynthetic characteristic root growth |
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