【摘要】 田间条件下,以当地优质高产水稻品种武运粳7号为对照,研究抗条纹病品种南粳44和宁粳3号在巢湖市的适应性、丰产性和抗逆性,并探索其最佳氮肥水平与播期。结果表明,宁粳3号的平均产量为9 067 kg/hm2,仅次于武运粳7号的9 471 kg/hm2,南粳44的平均产量略低,为8 338 kg/hm2。3个水稻品种生育期极为相似,且生长状态均良好,对各种水稻常见病具有一定的抗性。可见,宁粳3号和南粳44是适宜巢湖市生长的优质粳稻品种。宁粳3号和南粳44氮肥适宜用量为240 kg/hm2,播期是5月15日到5月25日。更多还原

【Abstract】 A field experiment was conducted to study the adaptability,grain yield and stress resistance of stripes disease resistant cultivars of South Japonica 44 and Ningjing No.3 in Chaohu city,with Wuyunjing No.7,a native high-yield rice cultivar as ck,and to explore the optimal nitrogen level and sowing date.The results showed that the average grain yield of Ningjing No.3 was 9067kg/hm2,alone in Wuyunjing No.7 of the 9471kg/hm2,the average output of South Japonica 44 was slightly lower than 8338kg/hm2.The growth stages of three japonica rice cultivars were very similar,growed well and with resistance to common diseases of rice.So,it could conclud that Ningjing No.3 and South Japonica 44 were high-quality rice cultivars,and suitable for the growth in Chaohu city.The experiment also suggested that the optimal N application rate was 240kg/hm for Ningjing No.3 and South Japonica 44,and the sowing date was May 15 to May 25.更多还原