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| 土壤干湿交替对玉米生长速度及其耗水量的影响 | |
| 引用本文： | 梁宗锁,康绍忠,邵明安,魏永胜,张建华.土壤干湿交替对玉米生长速度及其耗水量的影响[J].农业工程学报,2000,16(5):38-40. |
| 作者姓名： | 梁宗锁 康绍忠 邵明安 魏永胜 张建华 |
| 作者单位： | 1. 中国科学院水利部水土保持研究所 2. 西北农林科技大学 3. 香港浸会大学 |
| 基金项目： | 国家杰出青年基金(49725102)和青年基金(59909007)资助项目 |
| 摘 要： | 在盆栽条件下研究了干湿交替对玉米生长速率、叶片水势、渗透势、气孔导度、相对生长速率和耗水量的影响。结果表明玉米在3～7叶期经历土壤水分缓慢亏缺,再进行复水的干湿交替后玉米叶片渗透调节能力明显增加,叶片生长表现出补偿效应,每次干湿交替后生长速率迅速下降的叶水势趋于下降,气孔导度对土壤水分变化非常敏感,并在干旱—复水过程中具有后效作用,蒸腾耗水量随干—湿交替而具有下降趋势,初步证明可在节水灌溉条件下人为控制不同生育时期的供水时间形成干湿交替,促进渗透调节能力增强和补偿生长来实现作物高产、高效、优质的目的 |
| 关 键 词： | 干湿交替 耗水量 叶水分关系 玉米 |
| 收稿时间： | 1999/9/27 0:00:00 |
| 修稿时间： | 1999-09-27 |
Growth Rate and Water Consumption of Maize Plant in Soil Alternate Drying-Wetting |
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| Liang Zongsuo,Kang Shaozhong,Shao Ming'an,Wei Yongsheng,Zhang Jianhua.Growth Rate and Water Consumption of Maize Plant in Soil Alternate Drying-Wetting[J].Transactions of the Chinese Society of Agricultural Engineering,2000,16(5):38-40. | |
| Authors: | Liang Zongsuo Kang Shaozhong Shao Ming'an Wei Yongsheng Zhang Jianhua |
| Abstract: | Maize growth rate, leaf water potential, osmotic potential, stomatic conductance and water consumption were studied in soil alternate drying wetting. Results showed that when maize plant was exposed in slow drying and recovering to supply water, leaf osmotic regulation capacity can be increased, leaf water potential of growth rate declined was decreased. Stomatic conductance is sensitive to soil water and has after effect in course of drying wetting. Leaf transpiration is decreased with drying wetting cycles increasing. It is concluded that the controlled irrigation time forms drying wetting cycle in such a way as to increase osmotic regulation capacity and compensation for higher yield & higher efficiency of irrigation. |
| Keywords: | alternate drying wetting water consumption relationship between leaf and water maize |
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