Chinese Journal OF Rice Science

Chinese Journal OF Rice Science >

2011 , Vol. 25 >Issue 1: 65 - 70

DOI: https://doi.org/10.3969/j.issn.1001-7216.2011.01.010

研究报告

Effects of No-Tillage Cultivation on Some Population Characteristics of TwoLine Hybrid Rice Liangyoupeijiu

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  • 1College of Agronomy, Guizhou University, Guiyang 550025, China; 2College of Agronomy, Hunan Agricultural University, Changsha 410128, China; 3Crop, Soil and Water Sciences Division, International Rice Research Institute, DAPO Box 7777, Metro Manila,Philippines; *Corresponding author, E-mail: ybzou123@126.com

Received date: 1900-01-01

  Revised date: 1900-01-01

  Online published: 2011-01-10

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Abstract

To ascertain the effects of notillage and transplanting(NT) on some population characteristics of hybrid rice, a comparison experiment with the hybrid rice combination Liangyoupeijiu as material was conducted under the conditions of NT and conventionaltillage and transplanting (CT) in Changsha in 2004-2006. Compared with CT, NT displayed lower leaf area index and less photosynthetic potential and lower dry matter accumulation before and after heading and less total dry matter accumulation. The export and translocation percentage of the matter in stem and sheaths, the export percentage and export amount of the matter in stem and leaves under the conditions of NT were 141%, 177%, 0.7%, and 8.4% lower than those under CT, respectively, whereas the ratios of the number of spikelets to leaf area, the number of filled grains to leaf area and the grain weight to leaf area under NT were 118%, 77%, and 11.0%, respectively, higher than those under CT. The net assimilation rate under NT was lower than that under CT from the midtillering stage to panicle initiation stage, whereas the net assimilation rate under NT was 741% higher than that under CT from the panicle initiation stage to heading stage The single stemsheath weight under NT was lower than that under CT at the midtillering stage, whereas the single stemsheath weights under NT were 176% and 44% higher than that under CT at the panicle initiation and heading stages, respectively. Compared with CT, NT displayed lower effective panicle number, seed setting rate and productive tiller percentage， higher spikelet number per panicle, 1000grain weight and harvest index. The average yield under NT reached 89307 kg/hm2, with an increase of 102% compared with CT, however, the difference was not significant at 5% level between CT and NT.

Key words： no-tillage cultivation; transplanting; hybrid rice; population characteristics

Cite this article

FENG Yue-hua,ZOU Ying-bin,Roland J. BURESH . Effects of No-Tillage Cultivation on Some Population Characteristics of TwoLine Hybrid Rice Liangyoupeijiu [J]. Chinese Journal OF Rice Science, 2011 , 25(1) : 65 -70 . DOI: 10.3969/j.issn.1001-7216.2011.01.010

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