保墒旱直播栽培条件下不同水稻品种农艺性状与产量比较研究

Comparative Study on Agronomic Characters and Yields of Different Rice Varieties by Cultivation Technology of Dry Direct Seeding

本文选用宁粳43号、宁粳45号、宁粳48号、宁粳28号等4个中晚熟优质水稻品种,在保墒旱直播栽培条件下比较其各生育时期、产量构成因素、产量等性状,以期筛选出适宜旱直播栽培的高产优质水稻品种,从而为大面积推广示范提供依据。试验结果表明:4个水稻品种均适宜水稻保墒旱直播轻简栽培。旱直播条件下,参试品种的产量由高至低依次为宁粳48号、宁粳28号、宁粳43号、宁粳45号,产量分别为11 782.5 kg/hm^2、11 347.5 kg/hm^2、10 966.5 kg/hm^2、10 524.0 kg/hm^2。

The middle-late mature high quality rice varieties Ningjing No.43,Ningjing No.45,Ningjing No.48 and Ningjing No.28 were selected for the study.The cultivation technology on rice direct seeding was used.The growth period,yield components and yield were compared to select the high-quality and high-yielding varieties suitable for direct seeding.The selected varieties could provide basis for large-scale demonstration and promotion.The results showed that the four rice varieties were suitable for soil moisture conservation and dry seeding.By dry direct seeding,the yields of Ningjing No.48,Ningjing No.28,Ningjing No.43 and Ningjing No.45 were 11 782.5 kg/hm2,11 347.5 kg/hm2,10 966.5 kg/hm2 and 10 524.0 kg/hm2,respectively.