杂交中籼组合绿丰20的选育·特征特性·高产栽培技术

[目的]为绿丰20的推广种植提供理论依据。[方法]介绍绿丰20的选育、特征特性及高产栽培技术,探讨绿丰20的生产潜力和推广价值。[结果]绿丰20全生育期平均138.0 d,熟期适中;有效穗252.0万穗/hm2,株高119.2 cm,穗长24.4 cm,每穗总粒数174.3粒,结实率75.4%,千粒重27.3 g,产量高。米质优,达国标优质3级。感稻瘟病,重感白叶枯病。抗倒伏。[结论]绿丰20株型适中,叶色较浓绿,长势繁茂,产量较高,米质优,抗倒伏,具有较好的推广应用前景。

Breeding, Characteristics and Supporting High-yield Cultivation Techniques of Medium Indica Hybrid Rice Lvfeng 20

[Objective] The aim was to supply theoretical basis for the popularization and cultivation of Lvfeng 20.[Method] The breeding,characteristics and supporting high-yield cultivation techniques of Lvfeng 20 were introduced,and its production potential and popularization value were discussed.[Result] Lvfeng 20’s whole growth period is moderate with 138 d.Its effective panicles is 252×104 per ha,plant height 119.2 cm,panicles length 24.4 cm,total spikelets per panicle 174.3,filled grain rate 75.4%,1 000-grain weight 27.3 g.It has high yield and good quality meeting the national standards for high quality rice with 3 grade.It is susceptible to rice blast and high susceptible to bacterial blight.It has strong resistance to lodging.[Conclusion] Lvfeng 20 has characteristics of moderate plant shape,dark green leaf,luxuriant growth potential,high yield,good quality and strong resistance to lodging,so it has better popularization and application foreground.