皖南地区双季早粳稻品种比较试验  

Comparison of double-cropping early japonica rice varieties in Southern Anhui Province

作　　者：李慈娟 LI Cijuan(Xuancheng Planting Management Service Center,Xuancheng 242000,China)

机构地区：[1]宣城市种植业管理服务中心,安徽宣城242000

出　　处：《安徽农学通报》2024年第22期11-15,共5页Anhui Agricultural Science Bulletin

摘　　要：为筛选出适合皖南地区种植的优质、高产和高抗的双季早粳稻品种,以中科发早粳23等6个双季早粳稻品种为材料,陵两优268、中早35为对照,开展比较试验,分别从生育期、抗逆性、农艺性状、经济性状和产量等方面对其进行综合评价。结果表明,各品种全生育期在114~120 d,中科发早粳32生育期最长;大多品种抗性能力较强,部分病虫害轻度发生;农艺性状方面基本苗数133.43万~161.92万株/hm^(2),最高苗数397.30万~469.27万株/hm^(2),株高93.0~113.6 cm,穗长16.5~22.4 cm;经济性状方面有效穗数251.87万~293.85万穗/hm^(2),穗实粒数113.6~123.2粒,千粒重在25.5~27.0 g;结实率在86.5%~91.0%;参试品种产量8335.83~8925.54 kg/hm^(2),中科发早粳25产量最高,其次为中科发早粳23、中科发早粳32和赣初粳1号;综合生育期、抗逆性、农艺性状、经济性状和产量等表现,中科发早粳25、中科发早粳23和赣初粳1号3个早粳稻品种丰产性好、生育期适中、综合抗性较强,综合表现优异,具有较好的推广应用价值,适宜在该地区引进种植。To select high quality,high yield and high resistance double-cropping japonica rice varieties suitable for planting in Southern Anhui province,field comparison experiments were carried out with 6 double-cropping japonica rice varieties such as Zhongkefazaogeng 23 as materials,Lingliangyou 268 and Zhongzao 35 as controls,and comprehensive evaluation was carried out from the aspects of growth period,stress resistance,agronomic characters,economic characters and yield.The results showed that the whole growth period was 114-120 days,and the growth period of Zhongkefazaogeng 32 was the longest.Most varieties had strong resistance,and some diseases and pests occurred lightly.The basic seedling number ranged from 1334300 to 1619200 plants/hm^(2),the maximum seedling number ranged from 3973300 to 4692700 plants/hm^(2),the plant height ranged from 93.0 to 113.6 cm,and the ear length ranged from 16.5 to 22.4 cm(agronomic characters).The effective panicle number ranged from 2518700 to 2938500 ears/hm^(2).The number of grains per spike was 113.6-123.2.The thousand grain weight was 25.5-27.0 g;The setting rate was 86.5%-91.0%(economic characters).The yield of the tested varieties were 8335.83-8925.54 kg/hm^(2),and Zhongkefazaogeng 25 had the highest yield,followed by Zhongkefazaogeng 23,Zhongkefazaogeng 32 and Ganchugeng 1.In terms of comprehensive growth period,resistance,agronomic characters,economic characters and yield,Zhongkefazaogeng 25,Zhongkefazaogeng 23 and Ganchugeng 1 early japonica rice varieties had good yield,moderate growth period,strong comprehensive resistance and overall excellent performance,which had good popularization and application value,and were suitable for introduction and planting in this area.

关 键 词：双季早粳稻 生育期 品种性状 抗性 产量 

分 类 号：S511[农业科学—作物学]