冀东地区冬小麦京冬8号晚播的生长动态  

Study on the Growth Trend of Late Sowed Winter Wheat(Jingdong 8) in Eastern Hebei Province

作　　者：吴旭银[1] 吴贺平[2] 李彦生[1] 周印富[1] 张淑侠[3] 

机构地区：[1]河北科技师范学院农学系,河北秦皇岛066004 [2]河北科技师范学院外语系,河北秦皇岛066004 [3]河北科技师范学院分析测试中心,河北秦皇岛066004

出　　处：《河北科技师范学院学报》2008年第3期6-12,共7页Journal of Hebei Normal University of Science & Technology

摘　　要：采用田间试验与室内分析相结合的方法，对冀东地区冬小麦京冬8号晚播高产（8111．52kg／hm^2）水平下植株的生长动态进行了研究。结果表明：出苗后植株鲜重、干重不断增加，分别在开花后24d，成熟时达一生最大值。其中，植株鲜重以拔节至挑旗增长速度最快（占最大值的42．13％），干重以挑旗至开花增长速度最快（占最大值的36．73％）。开花后，子粒鲜重、干重开始逐渐增加，成熟时达最大值，期间，以开花后12-24d子粒鲜重、干重增长速度最快，分别占最大值的51．11％和50．48％；出苗至挑旗，植株干物质的分配以叶片、叶鞘为主；挑旗至开花后12d，植株干物质分配以茎秆为主；此后，干物质向子粒中的分配迅速增加，成熟时，植株积累的干物质主要贮存在籽粒、茎秆中，分别占植株总干物重的36．93％和36．86％。Combining field experiment with indoor analysis, the growth trend of plants of late sowed high-yield winter wheat （Jingdong 8, 8 111.52 kg/hm^2） was studied. The results showed that after seedling emergence, the fresh weight and dry weight of the plant continuously increased. They reached their maximum value after 24 d and at maturation time. The fresh weight of the plant increased fastest from jointing stage to stage, reaching 42.13% of the maximum value, while the dry weight increased fastest from blossoming flagging flagging stage to period, reaching 36.73 % of the maximum value. After blossom, the fresh weight and dry weight of grain began to gradually increase, reaching its maximum value at maturation time of 51.11% and 50.48% of the maximum value respectively. From seedling stage to flagging stage, dry matters in the plant mainly distributed in leaves and sheathes; from flagging stage to blossoming period, dry matters mainly distributed in the stems. After that, the distribution of dry matters in grain rapidly increased, and until maturation time, the dry matters distributed in the plant mainly stored in grain and stems, which were of 36.93% and 36.86% of the total weight of dry matters in the plant.

关 键 词：冬小麦 晚播 生长动态 鲜重 干重 

分 类 号：S512.103.2[农业科学—作物学]