Responses of Water Consumption Characteristics, Yield, and Quality of

WANG Zeyi; ZHANG Hengjia; WANG Yucai; ZHANG Wanheng; GAO Jia; BA Yuchun

doi:10.13870/j.cnki.stbcxb.2020.03.046

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Responses of Water Consumption Characteristics, Yield, and Quality of

更新时间：2025-03-12

- Responses of Water Consumption Characteristics, Yield, and Quality of
- Vol. 34, Issue 3, Pages: 318-325(2020)
- 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：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2020.03.046
  CLC： S274.1
- Published：2020
- 稿件说明：
移动端阅览
WANG Zeyi, ZHANG Hengjia, WANG Yucai, et al. Responses of Water Consumption Characteristics, Yield, and Quality of[J]. 2020, 34(3): 318-325.
DOI：

WANG Zeyi, ZHANG Hengjia, WANG Yucai, et al. Responses of Water Consumption Characteristics, Yield, and Quality of[J]. 2020, 34(3): 318-325. DOI： 10.13870/j.cnki.stbcxb.2020.03.046.

摘要

研究旨在通过大田试验了解水分调亏对膜下滴灌板蓝根生长、耗水规律、产量、水分利用效率及品质的影响。于2018年在甘肃河西中部的民乐县益民灌溉试验站开展板蓝根水分控制试验，在板蓝根苗期和肉质根生长期保持充分灌水，营养生长期和肉质根生长期分别进行不同梯度（轻度、中度和重度）的水分调亏处理，并测定各项生长指标、产量、水分利用效率和品质。结果表明：（1）营养生长期和肉质根生长期中度和重度水分调亏显著降低了板蓝根株高、叶片数、主根长和主根直径，且降幅随调亏程度的加剧而增大，而轻度水分调亏与对照组无显著差异。（2）板蓝根在营养生长期和肉质根生长期各处理的耗水量呈现出随着水分调亏程度的加重而逐渐降低趋势，与对照相比降低显著（P<0.05）；耗水强度变化次序为营养生长期和肉质根生长期（约3.0 mm/d）>肉质根成熟（约1.5 mm/d）>苗期（约1.0 mm/d）。（3）营养生长期轻度水分调亏处理的板蓝根产量与水分利用效率最高，分别达到8 475.38 kg/hm2和23.33 kg/（hm2·mm），营养生长期和肉质根生长期连续轻度水分调亏处理次之，其余水分调亏处理产量和水分利用效率均有所下降，且与对照组之间差异显著（P<0.05）。（4）在营养生长期和肉质根生长期轻中度连续水分调亏有利于靛蓝、靛玉红、（R，S）-告依春、多糖含量的提高，且与对照组差异显著（P<0.05），重度水分调亏处理各项指标均最低。因此，综合分析板蓝根产量、水分利用效率和品质可知，最优控水处理为营养生长期和肉质根生长期连续轻度水分调亏，即该阶段土壤相对含水率为65%~75%，可作为河西冷凉灌区板蓝根种植的最佳灌水策略。

Abstract

The effects of water deficit (WD) on the growth

water consumption

yield

water use efficiency

and quality of Isatis tinctoriaunder-mulche drip irrigation were studied by a field experiment. In 2018

the I.tinctoria water control experiment was carried out at the Yimin Irrigation Experimental Station in Minle County

Gansu Province. The seedling stage and the fleshy root growth period were fully flooded

and different gradients (mild

moderate and severe) WD treatment were carried out in the vegetative growth period and the fleshy root growth stage

and various growth indicators

yield

water use efficiency and quality were determined. The results showed that: (1)In the period of vegetative stage and fleshy root growth

the moderate and severe water deficit significantly reduced the plant height

leaf number

main root length

and main root diameter

and the declines increased with the raising WD level

While the mild WD treatment showed no significant difference compared with control group. (2)The water consumption of I. tinctoria in the period of vegetative and the fleshy root growth decreased gradually with the increasing of WD regulation

which was significantly lower than the control group (P<0.05). The order of water consumption intensity change was that: the vegetative and the fleshy root growth (about 3.0 mm/d) > the fleshy root maturity (about 1.5 mm/d) > the seedling (about 1.0 mm/d). (3)In the vegetative period

the mild WD treatment (V1G0) had the highest yield and water use efficiency

reaching 8 475.38 kg/hm2 and 23.33 kg/(hm2·mm)

respectively

and the treatment of V1G1 followed

and yield and water use efficiency of the remaining treatments decreased significantly (P<0.05). (4) In the vegetative stage and the fleshy root growth stage

mild and moderate continuous WD was beneficial to the indigo

indirubin

S)-goitrin

and the polysaccharide content was significantly different from the control group (P<0.05). The indicators of severe WD treatment were the lowest. Therefore

comprehensive analysis of I. tinctoria yield

water use efficiency and quality

the optimal water-control treatment is the continuous slight WD in the vegetative growth period and the fleshy root growth period(V1G1)

That is to say

the relative water content of the soil during this period is 65%~75%

which can be used as the optimal irrigation strategy for the planting of I. inctoria in the cool irrigation area of Hexi.

关键词

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