淮北地区晚播麦的生育特性研究及配套栽培技术

Growth Characteristics and Supplementary Cultivation Techniques of Late Sowing Wheat in Huaibei Area

以不同类型品种小麦为研究对象,通过设置不同播期处理,研究了江苏淮北地区小麦播期推迟对冬前麦苗素质、全生育期及生育进程及产量构成的影响。结果表明:随着播期的推迟,小麦均出现了全生育期缩短,生育进程推迟,穗分化时间缩短的趋势。晚播麦产量构成表现为亩穗数增加,每穗粒数和千粒重减少,最终产量下降,其中每穗粒数的减少是产量下降的主要因素。通过选用穗粒中间型品种,提高播种质量,注重返青期及剑叶露尖期的田间管理,晚播麦仍可获得380kg/667m2左右的产量。

Taking different types of wheat varieties as the research materials, different sowing date was set as-treatment, the . effects of the sowing date postponed on seedling quality, whole growth period, growth dynamic and yield of winter wheat in Huaibei area of Jiangsu were studied. The results showed that： （1） With the sowing date postponed, the whole growth period trends shortened, growth process was delayed, spike differentiation time trends shotened. （2） The yield component of late sowing wheat such as ear numbers increased, grain number per spike and 1000 grain weight decreased, the yield decreased finally, which reduce the number of grains per panicle is the main factor＇of production decline. （3） Yield of late sowing wheat can achieve 380 kg/667m2 , by using intermediate grain type varieties, pay attention to field management regreening and flag leaf dew period.