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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。
Summer planting of wheat on behalf of the technology were studied, the results show that summer sowing young wheat spike rapid development, lasted a short time. Different summer sowing date had no significant effect on the number of spikelets per plant, but had some effect on the number of spikelets and 1000-grain weight. It is suggested that the planting of summer sowing and seeding of wheat should be sown before June 15 under the climate conditions of North Henan. In the case of large amount of materials (combination), semi-winter materials should be preferentially arranged, followed by weak spring and spring Materials; field management should catch early.