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Xiong Hong Fang Wen(Rice and Sorghum Research Institute ,Sichuan Academy of Agricultural Sciences .Luzhou, 646100)  
aving a stuly on the relationship between the ecological condition and sprouting ofaxillary bud .as well as yield of the ratooning rice .it was found that : 1. Sprouting number ofaxillary bud had a parabolic relationship with daily average temperature and relative humidityafter harvest , with the regression equations of =18. 6603x- 0. 3657x ̄2-233. 2135 and =6. 1187x- 0. 0369x ̄2 - 248. 6716 , respectively . and thus the suitable temperature and relativehumidity for sprouting of axillary, bud would be about 26℃ and 83% , respeetively. 2. Thestretching of axillary bud in leaf sheath had a closc relation with light intensity in plants be-fore harvest ,and a longer duration of sunshine was required for the sprouting period of axil-lary bud after harvest. 3. The daily nverage temperature was the most important in all eco-logical conditions affecting yield of the ratooning rice and the duration of sunshine was thesecond. 4. According to the weather regularity in the southeast Sichuan province , the safetyfactor was 80% to ensure that the ratooning rice flowered before Sept. 10.
【Fund】: 四川省科委应用基础研究基金
【CateGory Index】: S511.101
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