常规早籼新品种湘早籼46号主要特征特性及产量结构分析

为充分挖掘湘早籼46号的增产潜力,进一步提高产量。对湘早籼46号主要特征特性及在湖南省贺家山原种场6个试验点的产量结构进行了分析。结果表明,湘早籼46号株高、每穗总粒数、结实率和千粒重等性状均优于金优402;抗倒伏、抗稻瘟病,中感白叶枯病;在产量结构分析中,有效穗数和每穗总粒数的变异系数较大,分别与产量达极显著正相关,且产量的线性回归方程为:y=-24923.7+27.6x1+39.5x2+173.4x3+215.8x4。在栽培管理上,应主攻有效穗数和每穗总粒数,协调好穗粒间的关系。

Analysis on the main Characteristics and Yield Components of Conventional new Varieties Xiang zaoxian 46

Abstract: This paper analyzed the main characteristics of Xiangzaoxian46 and the yield component of six experiment points in Hunan Hejiashan Original Breeding Farm. The aim was to fully tap the yield potential of Xiangzaoxian46 and increase further its production. The results showed that Xiangzaoxian46 were better than Jinyou402 in plant height, spikelets per panicle, seed set and 1000-grain weight; resistant to lodging and piricularia leaf spot of rice,Moderate to bacterial leaf blight; In analysis of production structure, the coefficient of variation of effective panicles and spikelets per panicle was large, a large significant positive association was found for yield, and the equation on linear regression is y=-24923.7+27.6x1+39.5x2+173.4x3+215.8x4. In cultivation and management, we should research the effective panicles and spikelets per panicle and coordinate the relationship between grains per spike.