Taking the local rice variety Shashani as control,a rice variety screening experiment was conducted with Kendao 10,Songjing 6 and Ha 99 as entries through two-stage seedling nurturing.

In order to make the late variety grow normally,a research o n rice two-stages seeding was made,which is sowing seeds indoor or in green ho use and transplanting into film-house when the young plants grow to a certain h eight.

VARIATION OF GRIN WEIGHT AND GRAIN SET BETWEEN EAR SECTIONS IN DIFFERENT EAR-TYPE OF WHEAT GENETYPES;