欢迎访问《麦类作物学报》编辑部网站

作者	单位
惠海滨，林琪，刘义国，刘家斌，张洪生，翟延举	( 1. 青岛农业大学旱作节水省重点实验室，山东青岛 266109； 2. 莱州市金海种业有限公司，山东莱州 261400)

摘要点击次数: 1718

全文下载次数: 1308

中文摘要:

为确定超高产麦田适宜的灌水时期和数量，在小麦超高产试验田设置不同的灌水处理，研究了灌水量和灌水期对超高产小麦灌浆期旗叶、籽粒中蔗糖、可溶性糖动态变化及产量的影响。结果表明，与不灌水对照相比，灌水可提高超高产小麦灌浆期旗叶、籽粒中蔗糖和可溶性糖的代谢活性，显著增加籽粒产量。在2009-2010年度小麦生长季降雨量为291.7 mm的条件下，灌冬水、拔节水和灌浆水各60 mm的灌水处理（T5）灌浆期旗叶和籽粒中蔗糖和可溶性糖含量最高，转移和转化最完全，同时其产量也最高，达到超高产水平（9 923.58 kg·hm^-2），与其他灌水处理差异显著。在T5处理基础上继续增加灌水量的T7和T8处理旗叶和籽粒中蔗糖和可溶性糖代谢活性降低，穗粒数、千粒重和水分利用率下降显著，最终导致小麦减产。在本试验条件下，灌冬水、拔节水和灌浆水各60 mm是超高产麦田适宜的用水方案。

英文摘要:

To determine feasible irrigation stage and amount for super high yield land and excavate the yield potential of super high yield wheat, the effects of irrigation stage and amount on the dynamic changes of soluble sugar and sucrose in flag leaf and grain, and yield of super high yield wheat at filling stage were evaluated in super high yield land of Jinhai seed limited company. The results indicated that irrigation increased the metabolic activity of soluble sugar and sucrose of super high yield wheat at grain filling stage compared with the control, and the grain yield of super high yield wheat significantly increased. In the 2009-2010 growing season with rainfall of 291.7 mm, the treatment T5 was irrigated 60 mm at wintering, jointing and filling stage respectively, of which the contents of soluble sugar and sucrose were the highest and the transformation of soluble sugar and sucrose was the most thorough, and its yield was supreme up to super high yield level(9 923.58 kg·hm^-2). Increasing irrigation amount (T7 and T8), the metabolic activity of soluble sugar and sucrose, grains per spike, 1000 grain weight and water use efficiency decreased significantly, which leaded to yield reduction. So under the experimental conditions, irrigated 60 mm at wintering, jointing and filling stage respectively was the feasible irrigation scheme to super high yield land.

查看全文查看/发表评论下载PDF阅读器

关闭