Effects of different topdressing way and planting density on agronomic characteristics and yield of maize in middle area of Guangxi

In order to explore the high yield cultivation techniques of Pacific 98 in middle area of Guangxi, the effects of different top dressing way and planting density on agronomic characteristics and yield of maize in Laibin of Guangxi in 2010 were studied. The results showed that, the average plant height, ear height and yield of top dressing for 2 times were better than top dressing for 3 times.Under the same top dressing way, when the planting density was within a certain range, the yield of maize was increased with the planting density incresing. Thus, through top dressing for 2 times and increasing planting density appropriately, we could not only achieve high yield, but also save labour. The pattern was an ideal high yield culture technique of maize in middle area in Guangxi.