Effects of Tiller Ear Rate on Grain Yield and Rice Quality for Mid-ripe Keng Rice
Wei Fengzhen Huang Zhongqing Jiang Zhixun (Department of Agronomy,Anhui Agricultural University,Hefei 230036)
Two cultivars,i.e.Xiguang (multiple ear type) and Nonglin 286 (large ear type) were planted with a density of 3 000 000 plants/ha,and 7 basic main stems/plant of 1,3,5,7,9,11,13 from 1993 to 1994 on experimental farm of Anhui Agricultural University.The tiller ear rate of Xiguan and Nonglin 286 were 25 71%～93 21% and 8 21%～90 32%,respectively,and positively corelated to grain yield (r 1=0 6062 * for Xiguang and r 2=0 7806 ** for Nonglin 286). High tiller ear rate (over 70%) resulted in significant increase of grain yield and kernel number/ear and slight decrease of ear number per hactare,while ripen grain yield and kernel weight stayed unchanged.Positive corelationship between tiller ear rate and total number of spikes per hactare was also observed (r 1=0 8900 ** for Xiguang,r 2=0 8670 for Nonglin 286).It was found that tiller ear rate exerted no significant effects on milling quality and appearance quality of rice in the given conditions.
【CateGory Index】： S511.1