【摘要】 对小麦夏播加代技术进行了研究,结果表明,夏播小麦幼穗分化发育快、历时短。不同夏播期对小麦单株成穗数无明显影响,而对穗粒数、千粒重有一定影响。提出在豫北气候条件下,小麦夏播加代繁育应于6月15日前播种为宜;在处理材料(组合)量大的情况下,应优先安排半冬性材料,其次为弱春、春性材料;田间管理应抓早。更多还原

【Abstract】 The study on the breeding techniques of summer seeding wheat was indicated that the development of young ear of the summer seeding wheat was faster,and its course shorter.The different sowing dates had little effect on the spikes per plant,but had some effects on the kernel number per ear and the 1000-kernel weight.The sowing date of the summer seeding wheat which is before the June 15 should be suitable in the climate conditions of the north of Henan province.The semi-winter wheat materials should be prior to semi-spring and spring materials in arranging sowing date.The field managements should be ahead of time.更多还原