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《Journal of Anhui Agricultural Sciences》 2010-08
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Analysis on Meteorological Conditions in 2008 that Caused Heavy Rice False Smut in Chengdu Plain

FEI Yong-cheng et al (Chengdu Agricultural Meteorological Experiment Station,Wenjiang,Sichuan 611130)  
[Objective] The study was to provide the reference for precluding rice false smut.[Method] According to the field survey data from rice field in western Chengdu in the second ten days of August in 2008 and the climate condition in the last ten days of July and the first ten days of August in 2008.The cause of occurrence and epidemic of rice false smut in Chengdu plain was analyzed.[Result] The temperature of Chengdu in the last ten days of July and the first ten days of August (heading and flowering period of rice) in 2008 was decreased continuously,and it was lower than 25 ℃ from the end of July to the first ten days of August.The rain days from the last ten days of July to the first ten days of August in Chengdu was about 14 d.After middle stage of the first ten days of August,the air relative humidity was above 90% and the sunshine hour was only close to 1/2 of that in normal year.So the assimilation of the plants became slower and their respiration rate was reduced and their disease resistance was decreased with tenella tissue.[Conclusion] The suitable climate condition was the main cause of occurrence and epidemic of rice false smut.
【Fund】: 中国气象局业务系统项目“中国主要农作物病虫害气象等级预报系统”
【CateGory Index】: S435.111.4
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