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《Journal of Sichuan Agricultural University》 2001-01
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Effect of N Application for Bud Development at Different Days after Full Heading of Main Crop on the Ratooning Ability in Hybrid Mid Rice

XU Fu xian, XIONG Hong, HONG Song (Rice and Sorghum Institute, Sichuan Academy of Agricultural Sciences, Luzhou 646100, Sichuan, China)  
The relation between N applying for bud development (NABD) at different days after full heading of main crop and the ratooning ability in hybrid mid rice was studied with the hybrid K-You 5. The results are as follows: the effect of the NABD appears around 10 days after full heading of main crop; From full heading to harvest of main crop, highly significant negative correlation is observed between ratooning ablitity and the days from NABD date to the full heading of main crop; Effect of date for the NABD on grain yield increase of ratooning rice is related to the dry weight of the basic stems, the effect is little when the dry weight of the basic stems is very high or low.
【Fund】: 四川省科技厅应用基础研究项目
【CateGory Index】: S511.3
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