调亏灌溉对膜下滴灌菘蓝生长发育和产量的影响

周晨莉; 张恒嘉; 巴玉春; 李福强; 王璐

doi:10.13870/j.cnki.stbcxb.2020.04.029

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调亏灌溉对膜下滴灌菘蓝生长发育和产量的影响

更新时间：2025-03-12

- 调亏灌溉对膜下滴灌菘蓝生长发育和产量的影响
- Effects of Regulated Deficit Irrigation on Growth and Yield of
- 水土保持学报 2020年34卷第4期页码：193-200
- 作者机构：
  
  1. 甘肃农业大学水利水电工程学院,兰州,730070
  2. 民乐县洪水河管理处, 甘肃民乐,734500
- 作者简介：
  
  [ "周晨莉(1995-),女,甘肃秦安人,硕士研究生,主要从事高效节水灌溉理论研究。E-mail:1648607644@qq.com" ]
- 基金信息：
  
  甘肃省重点研发计划项目（18YF1NA073）国家自然科学基金项目（51669001）
- DOI：10.13870/j.cnki.stbcxb.2020.04.029
  中图分类号：
- 纸质出版：2020
- 稿件说明：
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周晨莉, 张恒嘉, 巴玉春, 等. 调亏灌溉对膜下滴灌菘蓝生长发育和产量的影响[J]. 水土保持学报, 2020,34(4):193-200.

ZHOU Chenli, ZHANG Hengjia, BA Yuchun, et al. Effects of Regulated Deficit Irrigation on Growth and Yield of[J]. 2020, 34(4): 193-200.
周晨莉, 张恒嘉, 巴玉春, 等. 调亏灌溉对膜下滴灌菘蓝生长发育和产量的影响[J]. 水土保持学报, 2020,34(4):193-200. DOI： 10.13870/j.cnki.stbcxb.2020.04.029.

ZHOU Chenli, ZHANG Hengjia, BA Yuchun, et al. Effects of Regulated Deficit Irrigation on Growth and Yield of[J]. 2020, 34(4): 193-200. DOI： 10.13870/j.cnki.stbcxb.2020.04.029.

摘要

2019年在河西绿洲冷凉灌区民乐县益民灌溉试验站进行了调亏灌溉对膜下滴灌菘蓝生长动态、产量和水分利用效率影响的大田试验研究。在苗期充分供水条件下，以全生育期充分供水（75%~85%的田间持水量）为对照，在营养生长期进行轻度、中度和重度水分调亏，在肉质根生长期进行轻度和中度水分调亏，在肉质根成熟期进行轻度水分调亏，分别测定了水分调亏菘蓝农艺性状的阶段性改变、干物质积累和分配、产量及水分利用效率。结果表明，在营养生长期和肉质根生长期对菘蓝进行中度和重度水分调亏、成熟期进行轻度水分调亏均会显著降低其株高、主根长、主根直径和叶面积指数（P<0.05），而营养生长期和肉质根生长期对菘蓝进行轻度调亏其株高、主根长、主根直径和叶面积指数与对照处理间无显著差异（P>0.05）。营养生长期以及肉质根生长期进行中度水分调亏和重度水分调亏会降低菘蓝干物质积累量，降幅为3.11%~15.67%，而轻度水分调亏则不会显著影响其干物质积累量。WT1和WT4处理的经济产量与对照无显著差异，其值分别为8 554.18，8 398.70 kg/hm2，其他各处理均导致菘蓝经济产量降低，降幅为6.89%~18.33%，WT4处理的水分利用效率和灌溉水利用效率最高，比对照提高7.91%和7.39%。因此，在营养生长期—肉质根生长期施加连续轻度水分调亏，其他生育期充分供水是实现河西绿洲冷凉灌区菘蓝节水高产高效灌溉制度。

Abstract

A field experiment was conducted to study the effects of regulated deficit irrigation on growth dynamics

yield and water use efficiency of Isatis indigotica under mulched drip irrigation in 2019 at Hexi oasis cold irrigation area of Yimin irrigation experimental station

Minle County. Under the condition of ensuring adequate water supply in seedling stage

full water supply in whole growth stage (75%~85% field water capacity) was taken as the control treatment. Mild

moderate and severe water deficit management was carried out in the vegetative stage

mild and moderate water deficit treatment was carried out in the fleshy root growth stage

and mild water deficit treatment was carried out in the fleshy root maturity stage. The periodical changes in agronomic traits

dry matter accumulation and distribution

yield and water use efficiency of I. indigotica were measured under different water deficit treatments. The results showed that the plant height

taproot length

taproot diameter and leaf area index of I. indigotica decreased significantly (P<0.05)

on moderate and severe water deficit during vegetative stage and fleshy root growth stage and light water deficit during fleshy root maturity stage. There was no significant difference in plant height

taproot length

taproot diameter

and leaf area index with the control treatment between the vegetative stage and fleshy root growth stage under mild water deficit treatment (P>0.05). Moderate water deficit and severe water deficit in vegetative stage and fleshy root growth stage could reduce dry matter accumulation of I. indigotica. The decrease ranged from 3.11% to 15.67%. Mild water deficit treatment would not significantly affect dry matter accumulation. There was no significant difference between the economic yield of WT1 and WT4 with control treatment (P>0.05). Their values were 8 554.18 kg/hm2 and 8 398.70 kg/hm2. All other treatments reduced the economic output of I. indigotica. The decrease ranged from 6.89% to 18.33%. Water use efficiency (WUE) and irrigation water use efficiency (IWUE) in WT4 were the highest. Compared with the control treatment

it was improved by 7.91% and 7.39%. Therefore

applying continuous mild water deficit during the vegetative stage and the fleshy root growth stage and providing adequate water supply during the other growth stages is an optimal irrigation method with high efficiency

water saving

and high yield in the irrigation area of Hexi oasis cold irrigation area.

关键词

Keywords

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