晋稻8号配套栽培技术研究

在2010年试验的基础上,2011年进一步从施氮量、施氮方式、栽插密度方面研究晋稻8号的栽培技术。结果表明,在8个处理中,施氮量210 kg/hm2、栽插密度22.8万穴/hm2、施氮方式不同的2个处理产量排前2位。基肥、蘖肥、穗肥按3∶3∶4的施氮比例更适合晋稻8号的生长发育,增产效果明显。在施氮量、施氮方式相同时,产量及穗粒性状都是栽插密度22.8万穴/hm2的处理表现好,表明该密度适合晋稻8号栽培。施氮量210 kg/hm2,基肥、蘖肥、穗肥按3∶3∶4的施氮比例,栽插密度22.8万穴/hm2的处理产量最高,其在有效穗、成穗率、结实率、千粒质量上表现较突出,是3个因素的最佳组合,适合在晋稻8号栽培中应用。

Research on Rice Cultivation Techniques System for Jindao 8

Based on the field experiment in 2010,a further research of Jindao 8 was conducted with different nitrogen quantity,nitrogen application methods and planting density.At nitrogen quantity 210 kg/hm2 and planting density 22.8 million points/hm2,the grain yield by two nitrogen application methods ranked the top two in eight handles,and one of the two methods-basal fertilizer 30%,fertilizer for tillering 30%,earing fertilizer 40%—was more suitable for the growth of Jindao 8 and had a significant effect on the increase of grain yield.With the same nitrogen quantity and nitrogen application methods,the 22.8 million points/hm2 planting density had significant effect on grain yield and seed quality of Jindao 8.Jindao 8 obtained the highest yield at nitrogen quantity 210 kg/hm2,nitrogen application method of basal fertilizer 30%,fertilizer for tillering 30%,earing fertilizer 40% and at 22.8 million points/hm2 planting density.The three influential factors had a significant effect on the number of productive ear,bearing tiller,maturing rate and 1 000 grain weight.The planting density had more effect than nitrogen quantity in influential factors.