宁夏引黄灌区直播水稻品种特性与品质初步比较研究

旨在为高产优质栽培及育种提供理论基础。采用大区对比法对6 个直播水稻品种进行比较试验，分别对各个品种的生育期、出苗情况、分蘖、株高和干物质变化动态、主要经济性状、产量、品质等指标进行考察。结果表明：‘吉粳105’生育期为137 天左右，低于其他品种，符合宁夏栽培要求；抽穗灌浆期，叶面积指数达到7.0，其穗粒数达到112.7 粒/穗，实际产量为11278.5 kg/hm2，均显著高于其他对照品种。通过加工和外观品质表现初步测定，‘吉粳105’有较好的加工和外观品质。‘吉粳105’表现为生育期短，成穗率较高，经济性状突出，产量较高，适宜在该区域推广。

Characteristics and Quality of Direct Seeding Rice in Ningxia Yellow River Irrigation Region

The aims were to provide theoretical basis for high yield and quality cultivation as well as breeding of rice. A comparison among six direct seeding rice cultivars was carried out through huge area contrast experiment, and the growth stage, germination situation, tiller number, plant height, accumulation rate of dry material, main economic characters, yield and quality of each cultivar were recorded respectively. The results showed that the growth stage of‘JiJing 105’was 137 days, which was shorter than that of the other rice cultivars and was in accord with cultivation requirement in Ningxia. Its leaf area index reached 7.0 in heading filling period, the grain number per spike was 112.7, and the actual yield was 11278.5 kg/hm2, all were higher than that of the other rice cultivars. Through comparison,‘JiJing 105’ showed better processing and appearance quality. Therefore,‘JiJing 105’, which had short growth period, high spike rate, outstanding economic character and high yield, was fit for promotion in Ningxia.