樊玉春　李玥　魏霖静　赵霞　周慧

摘要： 本研究利用不同胡麻品种、不同干旱程度的大田试验数据，检验、评估3种作物模型干旱胁迫效应算法的精确性，及其在现蕾期、青果期干旱胁迫处理下对胡麻蒸腾速率、气孔导度、叶面积指数及籽粒产量4个指标的模拟预测能力。模拟结果表明，干旱胁迫使胡麻蒸腾速率、气孔导度、叶面积指数和籽粒产量降低。3种作物模型干旱胁迫效应算法可以模拟出胡麻生理生化指标在各干旱处理下的变化趋势，但模拟效果不够理想。3种干旱胁迫效应算法均低估了籽粒产量。综合考虑，WOFOST模型干旱胁迫效应算法对籽粒产量、蒸腾速率的模拟效果最好，APSIM模型干旱胁迫效应算法对气孔导度的模拟效果最好，DSSAT模型干旱胁迫效应算法对叶面积指数的模拟效果最好。

关键词： 胡麻；作物生长模型;干旱胁迫；现蕾期；青果期

中图分类号： S565.3 文献标识码： A 文章编号： 1000-4440（2023）02-0423-11

Comparison of responsiveness of three oil flax growth models to drought stress at budding stage and green fruit stage

FAN Yu-chun¹， LI Yue²， WEI Lin-jing²， ZHAO Xia²， ZHOU Hui²

（1.College of Science， Gansu Agricultural University， Lanzhou 730070， China；2.College of Information Science and Technology， Gansu Agricultural University， Lanzhou 730070， China）

Abstract： In this study， the accuracy of drought stress algorithms of three crop models and their ability to simulate and predict four indicators of transpiration rate， stomatal conductance， leaf area index and seed yield of oil flax under drought stress at green fruit stage and budding stage were tested and evaluated using data from field trials with different oil flax varieties and different drought levels. The simulation results showed that drought stress reduced transpiration rate， stomatal conductance， leaf area index and seed yield. The drought stress algorithms of three crop models could simulate the change trends of physiological and biochemical indices of oil flax under every drought treatment， but the simulation was not satisfactory. All three drought stress algorithms underestimated the seed yield. The results indicated that the drought stress algorithm of WOFOST model had the best performance on the simulation of seed yield and transpiration rate， the drought stress algorithm of APSIM model had the best performance on the simulation of stomatal conductance， and the drought stress algorithm of DSSAT model had the best performance on the simulation of leaf area index.

Key words： oil flax;crop growth model;drought stress;budding stage;green fruit stage

在氣候变化的大背景下，水资源短缺，干旱是世界粮食安全面临的严重威胁^[1]，且全世界迎来水供应缺乏问题，以及未来粮食需求的增加可能会使干旱更加严重。大量研究结果表明，现蕾期、青果期干旱胁迫会对胡麻生长发育、器官生成、籽粒产量造成不利影响^[2]。胡麻因其抗旱性强、抗寒性强、耐瘠薄的特点成为了干旱地区重要的经济油料作物，且越来越受到崇尚健康自然的现代消费者青睐^[3]。干旱是威胁胡麻产量的主要因素，因此，准确预估作物模型对干旱胁迫下胡麻生长的模拟效果具有重大意义。……