Coating seeds with a certain seed coating developed in the Institute of Agricultural Sciences of the Lixiahe District of Jiangsu province is the key technology in cast-transplantation of no-plate dry-raised rice seedlings.

Effect of nitrogen application rate on morphological and physiological characters of rice dry seedbed seedlings;

Comparison studies of roots physiology activity between rice dry seedbed seedlings and wet seedbed seedlings;

Study on wilting reaction of dry nursery seedlings and physiological response to it;

The results showed that the method with 26 g ammonium phosphte, 24 g potassium sulfate bottom fertilizer and 39 g urea applied in period of two leave on 1m 2 seedling bed have a best effect on synthetic quality of seedling, which provides reference to the quantity and period for N fertilizer applied to rice seedling cultured on dry bed in salinized area.

The results of comparative studies on ecological effects of upland and paddy beds and its physiobiochemical effects on rice seedling growth showed:the upland seedling bed has such ecological advantages as rapid raising of soil and air temperature,great difference of daily maximum and minimum temperature,high light penetratiom ratio and so on.