关键词: 水稻, 基质育秧, 暗化催芽

Abstract:

An experiment was carried out to study the effect of rice seedling qualities under different cultivating treatments with Nanjing 9108 as material. The results showed that the plant height, basal stem width, leaf age, SPAD value, fresh weight, all these indexes of seedling qualities were significantly excelled with the minimum coefficient variation （CV） under the dark treatment, compared with the rice seedling under non-dark treatment and the nutrition soil treatment. It also showed that the emergence rate, health seedling index and root twisting power under the dark treatment were higher than the other treatments significantly, and raising seedling process speeded up 2~3 d. It all proved that the dark treatment germination technique is very necessary and important, which should be widely popularized.

Key words: rice, seedling raising substrate, dark treatment germination