Abstract:

Tianjin region of high-quality japonica Cultivated rice varieties ‘Jinchuan 1’ as the experimental material to study the different fertilization date and nitrogen fertilizer quantity on the yield of rice, regular rice quality, the unpolished rice ratio and rice RVA characteristics of taste. The results showed that fertilization date and nitrogen fertilizer quantity on yield of unpolished rice ratio, chalky ratio, amylose content, RVA peak viscosity, hot pose viscosity and setback, palatability value of indicators were significantly different in the low N treatment and high N treatment, the first fertilization date compared with the other two, higher yields and milling quality of rice, rice amylose and protein, RVA spectrum eigenvalue, the appearance and taste of rice and other physical and chemical indicators were more excellent. Therefore, this species ‘Jinchuan 1’, the rice entered the heading stage panicle was applied as soon as possible. The best eating quality and the highest yield of rice were obtained in the first fertilization date.