河北省2013年为典型的多雨寡照年份,5~10月的逐月日照时数均低于历年平均,尤其是7~9月的日照时数仅分别为历年平均的69.3%、71.1%和56.2%。2013年在麦棉套作模式下,以10个棉花品种(系)为试材,对棉花株高、果枝性状、“三桃”比例、产量及产量构成因子、纤维品质进行分析,以筛选适宜多雨寡照年份种植的棉花品种(系)。结果表明:麦棉套作模式下,尤其是多雨寡照年份,棉花营养生长集中在6月下旬~7月中上旬,目前生产上的主推棉花品种在多雨寡照年份均存在晚熟的问题,成铃主体为秋桃,霜前花率过低,不适宜在麦棉套作模式中应用。夏播品种中棉所50生育期短,伏桃比例较高,霜前花率达到83.4%,子棉产量3 814.1 kg/hm2,显著高于其他品种,且纤维品质较好,较好地适应了多雨寡照年份的气候特点,适宜麦棉套作种植。 Hebei Province was a typical wet and rainy year. The monthly sunshine duration from May to October was lower than the historical average. Especially, the sunshine hours from July to September were only 69.3%, 71.1% and 56.2 %. In 2013, using 10 cotton varieties (lines) as test materials, the cotton plant height, fruit and branch traits, the ratio of “three peach”, the yield and yield components and the fiber quality of cotton were tested in 2013, Suitable for rainy and light years planting cotton varieties (lines). The results showed that in the wheat-cotton intercropping system, especially in the rainy and light years, the vegetative growth of cotton concentrated in late June to mid-July of early July. At present, the main cotton bolls in production have the problem of late ripening in rainy and light years. Autumn peach, frost before the flower is too low, not suitable for use in the wheat-cotton cover mode. The sowing date of summer sowing C5050 was short, the proportion of peach was higher, the rate of frost before flowering was 83.4%, the yield of cotton seed was 3814.1 kg / hm2, which was significantly higher than other varieties, and the fiber quality was better and better adapted The weather characteristics of the rainy and light years, suitable for cotton plantations for planting.