| 分根区交替灌溉下水分亏缺对夏玉米生长和水分利用效率的影响 |
| |
| 引用本文： | 程铭慧,范军亮,张富仓,王海东,向友珍.分根区交替灌溉下水分亏缺对夏玉米生长和水分利用效率的影响[J].排灌机械工程学报,2018,36(9):819-823. |
| |
| 作者姓名： | 程铭慧 范军亮 张富仓 王海东 向友珍 |
| |
| 作者单位： | 西北农林科技大学旱区农业水土工程教育部重点实验室, 陕西 杨凌 712100 |
| |
| 摘 要： | 为探讨玉米节水灌溉方式的理论依据,通过桶栽试验研究了分根区交替灌溉(APRI)方式下,不同生育期水分亏缺对夏玉米生长、干物质累积质量、籽粒产量、总耗水量和水分利用效率(WUE)的影响.结果表明:常规灌溉(CI)方式下,苗期和全生育期水分亏缺的株高、叶面积和总耗水量均显著低于充分灌溉,但苗期水分亏缺可以提高WUE.相同的灌水方式和亏缺时期,中度亏缺的根干物质质量、地上和总干物质质量以及籽粒产量均显著高于重度亏缺;相同的灌水方式和灌水水平,苗期水分亏缺的株高、叶面积、根干物质质量、地上和总干物质质量以及总耗水量均显著的低于灌浆期,但籽粒产量和WUE均显著高于灌浆期;相同的灌水水平和亏缺时期,APRI的根干物质质量和总耗水量均显著低于CI的,但APRI的籽粒产量和水分利用效率均显著高于CI的.本研究结果表明,APRI在苗期进行中度亏缺有利于营养生长的调控,并达到节水高产,提高WUE的目的.
|
| 关 键 词： | 分根区交替灌溉 水分亏缺 亏缺时期 夏玉米 生长 水分利用效率 |
| 收稿时间： | 2018-05-10 |
Effects of water deficit on growth and water use efficiency of summer maize under alternate partial root-zone irrigation |
| |
| CHENG Minghui,FAN Junliang,ZHANG Fucang,WANG Haidong,XIANG Youzhen.Effects of water deficit on growth and water use efficiency of summer maize under alternate partial root-zone irrigation[J].Journal of Drainage and Irrigation Machinery Engineering,2018,36(9):819-823. |
| |
| Authors: | CHENG Minghui FAN Junliang ZHANG Fucang WANG Haidong XIANG Youzhen |
| |
| Institution: | Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100, China |
| |
| Abstract: | In order to find the theoretical basis of water-saving irrigation for maize, effects of water deficit on growth, dry matter accumulation, grain yield, total water consumption and water use efficiency(WUE)of summer maize in various growth stages under alternate partial root-zone irrigation(APRI)were studied in a pot experiment. The results show that the plant height, leaf area and total water consumption under water deficit in seedling stage and the whole growth stage are significantly lower than those under conventional irrigation(CI)with sufficient irrigation, but WUE is increased by the water deficit occurred in the seedling stage. For the same irrigation method and deficit duration, the root dry weight, aboveground and total dry matter accumulation and grain yield in moderate water deficit are significantly higher than those in severe deficit. For the same irrigation method and irrigation level, the plant height, root dry weight, aboveground and total dry matter accumulation and total water consumption in seedling stage are significantly lower than those in milk stage, but the grain yield and WUE are substantially higher. For the same irrigation level and deficit period, the root dry weight and total water consumption under APRI are significantly lower than those under CI, but the grain yield and WUE under APRI are considerably higher than those under CI. This suggests that APRI with a moderate deficit in seedling stage is conducive to the regulation of vegetative growth to achieve the objective of water saving with high yield and WUE improvement. |
| |
| Keywords: | Alternate partial root-zone irrigation water deficit deficit stage summer maize growth water use efficiency |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《排灌机械工程学报》浏览原始摘要信息 |
| 点击此处可从《排灌机械工程学报》下载免费的PDF全文 |
|
