Abstract:

Hybrid japonica rice Gengyou 653 was suitable for high-quality rice production in mid-early maturing rice area of Liaoning Province as its excellent eating quality. In the experiment, the effects of hill space and fertilizer amount on yield traits of Gengyou 653 were investigated. The results showed that the amount of nitrogen should be appropriate, the hill space should be longer, the amount of phosphorus should be lower and the amount of potassium should be higher for plant population control and lodging resistance. High-yield could be achieved by increasing the setting ratio, the filled grains per panicle and the 1000-grain weight. The high yield target of Gengyou 653 was 9 750 kg/hm². The suitable hill space was 17.23~18.14 cm, the amount of nitrogen was 109.62~117.48 kg/hm², phosphorus was 30.29~32.74 kg/hm², potassium was 162.94~172.92 kg/hm².

Key words: hybrid japonica rice, Gengyou 653, fertilizer and density treatment, yield traits

摘要：

杂交粳稻品种粳优653食味品质优异,适宜在辽宁省中早熟稻区作优质稻生产。本研究采用规范化设计,分析了插秧丛距、施肥量对粳优653产量性状的影响。结果表明,施肥量和插秧穴距对粳优653产量影响较大,在生产中应适当减施氮肥和磷肥、增加插秧丛距和增施钾肥,进而控制群体分蘖数,防止倒伏,提高成粒率,增加每穗实粒数,提高千粒重,从而实现高产。粳优653的高产目标为9 750 kg/hm²,适宜的肥密方案为插秧丛距17.23~18.14 cm,施氮量109.62~117.48 kg/hm²、施磷量30.29~32.74 kg/hm²、施钾量162.94~172.92 kg/hm²。

关键词: 杂交粳稻, 粳优653, 肥密措施, 产量性状