田间和模型条件下不同生长阶段灌溉管理对豇豆植株产量和水分生产力的影响

IF 5.7 3区 环境科学与生态学 Q1 WATER RESOURCES
Faranak Baradaran-Hezaveh, Hossein Babazadeh, Ebrahim Amiri, Hossein Ebrahimi
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引用次数: 0

摘要

采用DSSAT模型,研究了不同生育阶段灌溉管理对豇豆植株产量的影响。该试验于2017年和2018年在伊朗北部以随机完全区组设计的形式进行,共有3个重复。主要处理为按植株需水量的40%、60%、80%、100%和120%进行灌溉,次要处理为营养、生殖和完全期(营养和生殖)灌溉。结果表明:2017年,当供水量为100%时,营养和繁殖阶段的生物量、荚果和种子的最大产量分别为4588、3222和1005 kg/ha;在年×水分比×生育期的交互作用下,2018年以生物量、荚果和种子产量为基础的水分利用效率最高的是营养期灌溉条件和干旱条件,平均为3.57、2.37和0.75 kg/m3。基于灌溉、灌溉+降雨、蒸腾、蒸腾+蒸散和深渗的水分生产力分量(WPI、WPI + R、WPET、WPT和WPETQ)的平均值分别为0.61、0.41、0.39、0.67和0.32 kg / m3。DSSAT模型评估结果表明,在标定条件下,生物量产量RMSE和RMSEn分别为130 kg/ha和5.91%,种子产量RMSE和RMSEn分别为92 kg/ha和12.62%。在验证条件下,生物量产量分别为129 kg/ha和5.29%,种子产量分别为73 kg/ha和8.61%。在此基础上,建议在营养和繁殖阶段处理100%需水量,蒸腾速率为188 mm为适宜管理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of irrigation management in different stages of growth on the yield and water productivity in cowpea plant in field and model conditions

The research was conducted in order to evaluate the management of irrigation in different stages of growth on the yield of the cowpea plant using the DSSAT model. The experiment was conducted in the form of a randomized complete block design with three replications in the north of Iran during 2017 and 2018. The main treatments included irrigation with the management of 40, 60, 80, 100 and 120% of the plant’s water requirements (WRs), and the secondary treatment included irrigation in the vegetative, reproductive and complete stages (vegetative and reproductive). The outcomes indicated that the maximum yield of biomass, pod and seeds when supplying 100% of the water supply in 2017 was 4588, 3222 and 1005 kg/ha, respectively, in both vegetative and reproductive stages. In the interaction of year × WR × growth stages, the maximum water use efficiency based on yield of biomass, pod and seeds in 2018 were under irrigated conditions in the vegetative stage and in dry conditions with the average of 3.57, 2.37 and 0.75 kg/m3. The average values of water productivity components based on irrigation, irrigation and rainfall, evapotranspiration, transpiration and evapotranspiration and deep percolation altogether (WPI, WPI + R, WPET, WPT and WPETQ) was obtained as 0.61, 0.41, 0.39, 0.67 and 0.32 kg per cubic meter, respectively. The outcomes of evaluating DSSAT model showed that the values of RMSE and RMSEn in calibration conditions were, respectively, 130 kg/ha and 5.91% for biomass yield and 92 kg/ha and 12.62% for seed yield. In the validation conditions, these indicators were, respectively, 129 kg/ha and 5.29% for biomass yield and 73 kg/ha and 8.61% for seed yield. Based on the results, treating 100% of the water requirements in the vegetative and reproductive stages and with transpiration rate of 188 mm is suggested as suitable management for the studied area.

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来源期刊
Applied Water Science
Applied Water Science WATER RESOURCES-
CiteScore
9.90
自引率
3.60%
发文量
268
审稿时长
13 weeks
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