XU Zheng,LI Yinkun,GUO Wenzhong,et al.Water Consumption Rule for Greenhouse Flowering Chinese Cabbage Based on Weighing Lysimeter[J].Northern Horticulture,2017,41(16):85-90.[doi:10.11937/bfyy.20170354]
基于称重式蒸渗仪的温室菜心耗水规律
- Title:
- Water Consumption Rule for Greenhouse Flowering Chinese Cabbage Based on Weighing Lysimeter
- Keywords:
- weighing lysimeter; greenhouse flowering Chinese cabbage; irrigation amount; evapotranspiration rate; water use efficiency
- 文献标志码:
- A
- 摘要:
- 以菜心为试材,利用称重式蒸渗仪,以直径20 cm的蒸发皿水面蒸发量(Ep)为基础标准,研究了在不同灌溉处理条件下(0.6Ep、0.7Ep、0.8Ep、0.9Ep)温室菜心生育期的蒸散量、蒸散速率、产量、生物量及水分利用效率,以探明温室菜心的耗水规律,明确温室菜心合理的灌溉量。结果表明:温室菜心生育期内蒸散量波动范围为0.73~3.52 mm?d-1,前期及中后期的平均蒸散速率分别为1.43 mm?d-1和2.04 mm?d-1,呈前期变化平稳,中后期变化剧烈的趋势;随着灌溉量的增加,菜心的蒸散量随之增加,温室菜心全生育期蒸散量为65.98~78.92 mm。其中0.7Ep处理下温室菜心产量、生物量、产量水分利用效率及生物量水分利用效率均为最高。与0.6Ep、0. Ep处理和0.9Ep处理相比,0.7Ep处理的产量分别提高了25.16%(P<0.05)、5.63%和13.76%(P<0.05),产量水分利用效率分别提高了17.42%(P<0.05)、8.48%和27.66%(P<0.05),生物量分别提高了21.96%(P<0.05)、7.41%和17.68%(P<0.05),生物量水分利用效率分别提高了11.21%、10.32%和32.10%(P<0.05),0.7Ep灌溉量为供试条件下温室菜心的最优灌溉量。
- Abstract:
- Flowering Chinese cabbage was used as material,based on the water surface evaporation (Ep),with the evaporation pan in diameter 20 cm of weighing lysimeter,evaporation,transpiration rate,yield,biomass and water use efficiency of greenhouse flowering Chinese cabbage under different irrigation treatments about 0.6Ep,0.7Ep,0.8Ep,0.9Ep were studied.In order to explore the rule of water consumption of greenhouse flowering Chinese cabbage,clear the reasonable irrigation amount of greenhouse flowering Chinese cabbage.The results showed that the diurnal variation of transpiration was 0.73-3.52 mm?d-1 in the whole growth period.The average evapotranspiration rates in early and late stages were 1.43 mm?d-1,2.04 mm?d-1,which showed a steady change in the early period,a dramatic changes in late period.The evapotranspiration increased with increase of irrigation amount.The evapotranspiration during the whole growth period of greenhouse flowering Chinese cabbage was 65.98-78.92 mm.Among them,the irrigation amount of 0.7Ep on the yield,biomass,yield water use efficiency and biomass water use efficiency were the highest,compared with treated 0.6Ep,treated with 0.8Epand treated with 0.9Ep,yield increased by 25.16%(P<0.05),5.63%and 13.76%(P<0.05),water use efficiency of yield increased by 17.42%(P<0.05),8.48%and 27.66%(P<0.05),biomass respectively increased by 21.96%(P<0.05),7.41% and 17.68%(P<0.05),water use efficiency of biomass increased by 11.21%,10.32% and 32.10%(P<0.05).So 0.7Ep was the optimal irrigation amount of greenhouse flowering Chinese cabbage under the test conditions.
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备注/Memo
第一作者简介:许峥(1992-),女,河南许昌人,硕士研究生,研究方向为蔬菜栽培与生理。E-mail:xuzheng0330@163.com.?