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Assessment of System of Rice Intensification(SRI) and Conventional Practices under organic and inorganic management in Japan

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Rice science 2011年第4期18卷 311-320页

作者： Tejendra CHAPAGAIN Andrew RISEMAN Eiji YAMAJI Faculty of Land and Food Systems the University of British Columbia344-2357 Main MallVancouverBC V6T 1Z4Canada Graduate School of Frontier Sciences the University of Tokyo5-1-5 KashiwanohaKashiwaChiba 277-8563Japan

The system of rice intensification(SRI) is a production system that involves the adoption of certain changes in management practices for rice cultivation that create a better growing environment for the *** system was compared with conventional practices and assessed under organic and inorganic *** practices showed significant response in root number,number of effective tillers per hill,days to flowering and harvest *** addition,SRI was found effective in minimizing pest and disease incidence,shortening the crop cycle,and improving plant *** yield was not different from conventional *** for harvest index and plant lodging percentage,there were no significant effects from management *** responses were noted when SRI practices were combined with organic management for plant height,number of effective tillers per hill,days to flowering and to *** improved panicle characteristics,lower plant lodging percentage and higher harvest index that ultimately led to comparable grain *** returns increased approximately 1.5 times for SRI-organic management regardless of the added labor requirements for weed ***,comparatively higher grain yield from conventional-inorganic methods underscore the need for further investigations in defining what constitutes an optimum set of practices for an SRI-organic system specifically addressing grain yield and weed management.

关键词： system of rice intensification conventional practices organic and inorganic management rice growth

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