不同密度和肥力条件对丰两优香一号产量及经济性状的影响

[目的]为优质超级杂交稻丰两优香一号的高产栽培技术体系的集成提供技术支撑。[方法]在大田试验条件下,比较不同种植密度与施氮量条件下丰两优香一号的产量及经济性状。[结果]在低密度条件下,增施氮肥有利于丰两优香一号产量的提高;而在高密度条件下增施氮肥反而会导致产量下降。在株行距19.0 cm×20.0 cm、谷秧2粒/穴、施氮肥180 kg/hm2条件下,产量较高。[结论]不同密度和肥力条件对丰两优香一号产量及经济性状都有显著影响。在浙江衢州中等肥力田种植,以种植密度26.25万穴/hm2左右,每穴2粒谷秧,施纯氮180 kg/hm2左右为佳。

Study on the Yield and Economic Characteristics of Super Hybrid Rice Fengliangyouxiang No.1 with High Quality under Different Density and Fertility

Abstrct [Objective]This paper aimed to provide technical supports for high-yielding cultural techniques system integrating of super hybrid riceFengliangyouxiang No.1 with high quality.[Method]The yield and economic characteristics of Fengliangyouxiang No.1 were studied with differentplanting density and nitrogen rate in the field test.[Result]With high planting density,the yield of Fengliangyouxiang No.1 was increasing as thenitrogen fertilizer rate increased,otherwise it decreased.The maximum yield could be obtained at the planting spacing of 19.0 cm × 20 cm bytransplanting two seedlings for each hole and applying 180 kg/hm2 of N for Fengliangyouxiang No.1.[Conclusion]Planting density and fertilityhad significant effects on the yield and economic characteristics of Fengliangyouxiang No.1.The best planting density for this variety was 262.5thousands holes/hm2 by transplanting two seedlings for each hole and applying 180 kg/hm2 of N in medium fertility field in Quzhou,Zhejiang.