Studies on the Effects of Direct-seeding and Water Saving Culture on the Water Requirement, Yield and Quality of Rice
Chiang, J. K. and S. C. Huang
The experiment was carried out in the paddy field of Liu-Chia, Tainan prefecture from 1999 to 2001. Three treatments, namely the direct seeding with water saving culture, the direct seeding with rotational irrigation culture and the transplanting with rotational irrigation culture were tested in this experiment to investigate the effects of the direct-seeding culture and the water saving culture on the water requirement, yield and quality of rice and the economic benefits. The result showed that the water saving culture could save 25.6~38.8% of irrigation water in the 1st crop which deficient in water resources. The production costs of the direct-seeding culture could reduce8.9%, or 13.0~15.6% when sowing by sowing machine or by hand sowing, respectively, compared to the transplanting culture in the 1st crop and in the 2nd crop it could reduce 17.2%, or 17.6~21.7%, respectively, when sowing by hand or volunteer rice in not influenced the yield and the quality of rice.
Key words: Rice, Direct-seeding culture, Volunteer rice, Water saving culture, Water requirement for rice.
Accepted for publication: 5 July, 2004