Using ten early and late super rice varieties as the materials,the dry matter production characteristics of double cropping super rice were studied in field conditions.

Using two super hybrid rice combinations Luliangyou 996(early rice) and Ganxin 688(late rice) as the materials,the effects of different transplanting densities(D1~D4 for early rice and M1~M4 for late rice) on the population development and grain yield of double cropping super rice were studied.

On chilling tolerance of South-China double cropping super rice varieties(combinations) with chilling stress at initial heading stage;

Productivity potential of climate-soil for double cropping rice in Fujian Province based on GIS technology;

Field experiments were conducted in double cropping rice field during 2005-2006 to study the effects of no-tillage cast transplanting on rice nutritional characteristics.

Field experiments were conducted in double cropping rice field during 2005-2006 to study the effects of different tillage methods on the changes of rice growth,its yield and soil fertility.

Based on the WOFOST crop model, jointing the climate simulated data produced by climate model, the simulation research was carried out about the impacts of the climate change on the yields and growth of double-harvest rice in the southern China during the future one hundred years.

Effect of potassium application on its efficiency and balance in double rice regions in Hunan Province;