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Effect of Planting Density on Yield and Agronomic Characters of
Huatianyu No.3 Corn
HUANG Qiang, GUO Yuanzhen, CHEN Hailing, CHEN Zhi, LIN Huahuang
( Putian Institute of Agricultural Sciences, Putian, Fujian 351144 )
Abstract: Effect of different planting density of Huatianyu No.3 on the yield and agronomic
characters were studied. The results showed that the yield increased first and then decreased with
the increasing density under different density as
3 000, 3 500, 4 000 plants/667 m2. At the aspect of the growth process and ear characteristics
of Huatianyu No.3, the harvest time was advance and the growth period was shorten in density of
4 000 plants/667 m2. But the ear characters became worse, ear length became shorter and the
length of bald tip became longer. Grains of a spike, 100-grain weight, seed yield, double-ear traits
and so on decreased obviously. The best planting density for the fresh ear yield was 3 500 plants
per 667 m2. Under such condition, the highest yield of fresh ear reached 1 158.40 kg/667 m2.
Key words: Super sweet corn; Huatianyu No.3; Planting density; Yield