作　　者： ; ; ; ; ; ; ;

机构地区： 江苏省农业科学院

出　　处： 《西南农业学报》 2013年第4期1312-1315,共4页

摘　　要： 利用江苏省淮南片和国家长江中下游冬麦组区域试验、生产试验的资料,对宁麦16产量构成因素及其与产量的关系进行分析,以期为该品种的合理利用提供依据。结果表明:宁麦16平均成穗数444.6万/hm2,穗粒数41.6粒,千粒重40.0 g。相关分析表明,穗粒数、成穗数与产量呈极显著正相关(r=0.4992**,r=0.4403**),而千粒重与产量呈不显著负相关(r=-0.2465)。产量与成穗数、穗粒数、千粒重的多元回归方程为:y=-9870.61+13.63 x1+138.61 x2+120.53 x3。通径分析表明,成穗数对产量的作用最大,其次是穗粒数,千粒重的效应相对较小。因此,宁麦16的高产栽培技术应在保证足够的群体和成穗数的基础上,增加穗粒数,稳定粒重。 In this paper, taken wheat eultivar Nin/~nai 16 as tested object, based on the experimental data from the regional trials in the south of Jiangsu province and the mid-lower reaches of the Yangtze River, its yield components and associations with yield were evaluated to pro- vide basis for the reasonable utilization of Ningmai 16 in the wheat production. The results showed that the average yield components for Ningmai 16 were 444.6 ~ 104spikes/hm2, 41.6 grains per spike and 40.0 g 1000-grain weight, respectively. Correlation analysis indicated that grain yield was positively and significantly correlated with grain number per spike （ 0. 4992 ＊ ＊ ） and fertile tiller number （ r = 0. 4403 ＊ ＊ ）, but it was not significantly negative association with 1000-grain weight （ -0. 2465 ）. A multiple regression equation of yield as- seciation with fertile tiller number, grains per spike and 1000-grain weight was y = -9870.61 ＋ 13.63xI ＋ 138.61x2 ＋ 120.53x3. The re- suit of path analysis indicated that fertile tiller number had a strong effect on grain yield, followed by grain number per spike, and the direct effect of 1000-grain weight on grain yield was the smallest. Therefore, the key to high-production technique of Ningrnai 16 was to increase grain number per spike and improve the stability of 1000-grain weight on the basis of sufficient populations and fertile tiller number.

关 键 词： 小麦 产量构成因素 相关分析 通径分析

领　　域： [农业科学]