The population of seedlings, yield, yield components and canopy structure changes of Xiangzaoxian 45 (early indica rice) under different direct-seeding density were studied in the paper. The results showed that seeding rate in 97.5~120.0 kg/hm2 could reach higher effective panicles(4 800~5 250 thousand/hm2), seed setting rate(about 75%), yield(6 300~6 750 kg/hm2) and economic coefficient and increase the covering index of canopy in pelagic, keep sufficient light distributed variables in lower middle class. Based on the research, the most suitable seeding rate of early conventional rice was 97.5~120.0 kg/hm2 in direct-seeding production, which was help for constructing reasonable canopy structure and exerting population yield potential.
FANG Bao-Hua-1, ZHANG Yu-Zhu-1*, HE Chao-2
. Influence of Planting Density on Yield Traits and Canopy Structure of Direct-seeding Early Rice[J]. China Rice, 2015
, 21(4)
: 155
-159
.
DOI: 10.3969/j.issn.1006-8082.2015.04.035
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