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作物学报 ›› 2013, Vol. 39 ›› Issue (08): 1445-1451.doi: 10.3724/SP.J.1006.2013.01445

• 耕作栽培·生理生化 • 上一篇    下一篇

生物炭对水稻根系形态与生理特性及产量的影响

张伟明,孟军,王嘉宇,范淑秀,陈温福*   

  1. 沈阳农业大学 / 辽宁省生物炭工程技术研究中心, 辽宁沈阳110866
  • 收稿日期:2012-07-16 修回日期:2012-11-16 出版日期:2013-08-12 网络出版日期:2013-01-04
  • 通讯作者: 陈温福, E-mail: wfchen5512@yahoo.com.cn
  • 基金资助:

    本研究由院士专项基金, 国家自然科学基金项目(31101105)和辽宁工程技术研究计划基金项目(2011402021)资助。

Effect of Biochar on Root Morphological and Physiological Characteristics and Yield in Rice

ZHANG Wei-Ming,MENG Jun,WANG Jia-Yu,FAN Shu-Xiu,CHEN Wen-Fu*   

  1. Shenyang Agricultural University / Biochar Engineering Technology Research Center of Liaoning Province, Shenyang 110866, China
  • Received:2012-07-16 Revised:2012-11-16 Published:2013-08-12 Published online:2013-01-04
  • Contact: 陈温福, E-mail: wfchen5512@yahoo.com.cn

摘要:

为明确生物炭对水稻根系与产量的效应,探明生物炭在水稻生产上应用的潜力与价值。采用盆栽试验研究了生物炭对超级粳稻不同生育期根系生长、形态特征及生理特性的影响。结果表明,土壤中施入生物炭能增加水稻生育前期根系的主根长、根体积和根鲜重,提高水稻根系总吸收面积和活跃吸收面积。在水稻生育后期,生物炭在一定程度上延缓根系衰老。根系伤流速率、根系活力和可溶性蛋白在整个生育期内均高于对照,同时维持了较为适宜的根冠比,根系生理功能增强;生物炭处理的水稻产量增加,表现为每穴穗数、每穗粒数、结实率提高,比对照平均增产25.28%。以每千克干土加20 g生物炭处理的产量最高,比对照提高了33.21%。生物炭处理对水稻根系形态特征的优化与生理功能的增强具有一定的促进作用。

关键词: 生物炭, 水稻, 根系性状, 产量

Abstract:

In order to clear the effects of biochar on rice root and yield and in further proved the value of biochar application on rice production, effects of biochar on root growth, morphological and physiological characteristics of super japonica rice were studied in a pot experiment. The results showed that biochar application in soil could increase the main root length, volume and fresh weight of rice roots during the earlier growing stage, enlarge root total absorption area and active absorption area. Biochar delayed root senescence and maintained a higher root activity to some extent in the later growth stage. Biochar promoted the root physiological activities, showing a higher bleeding rate, larger root activity and higher soluble protein content, as comparison with the control in the whole growth stage. The yield was 25.28% more than the control with an improved rice panicle number per hill, grain number per panicle and seed setting rate. The highest yield with a 33.21% increase was achived in the treatment with 20 g biochar per kilogram of dry soil. Biochar plays a promoting role in optimizing morphological and physiological characteristics of rice roots.

Key words: Biochar, Rice, Root traits, Yield

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