| 丁奠元,徐志鹏,陈飞宇,董文俊,仲志成,彭佳雯,蒋世杰,穆奎,严惠敏,王乃江,邹宇锋,冯浩.基于覆膜积温补偿效应的AquaCrop模型优化模拟[J].干旱地区农业研究,2021,39(6):113~125 |
| 基于覆膜积温补偿效应的AquaCrop模型优化模拟 |
| Optimization simulation of AquaCrop based on the compensatory effect under palstic mulching |
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| DOI：10.7606/j.issn.1000-7601.2021.06.13 |
| 中文关键词: 地膜覆盖 积温补偿效应 土壤温度 AquaCrop模型 冬小麦 夏玉米 |
| 英文关键词:plastic mulching accumulated temperature compensatory effect soil temperature AquaCrop model winter wheat summer maize |
| 基金项目:国家自然科学基金项目（51709233，51879223）；中国博士后科学基金项目（2018M632391）；西北农林大学中央高校基本科研业务费专项（2452021036） |
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| 中文摘要: |
| 基于2013—2018年冬小麦-夏玉米轮作田间试验数据，分析冬小麦和夏玉米覆膜积温补偿效应的特征，估算黄土高原南部覆膜积温补偿效应系数的值域范围，分析利用模型自带参数（方法一）和覆膜积温补偿系数（方法二）两种方法在AquaCrop模型中引入覆膜积温补偿效应的优劣性。结果表明：冬小麦在播种至越冬期，覆膜处理主要表现出增加土壤温度的作用；在返青期至成熟期，覆膜处理增加土壤温度的作用逐步消失，随之出现降低土壤温度的作用；夏玉米整个生育期内，覆膜处理均表现出较好的增加土壤温度的作用；冬小麦生育期内覆膜积温补偿效应在越冬后期出现一定的作用时间阈值。冬小麦播种~出苗阶段覆膜积温补偿系数平均值为1.08，出苗~越冬期阶段平均值为0.54；夏玉米播种~出苗阶段覆膜积温补偿系数平均值为0.81，出苗~抽雄期阶段平均值为0.63；在作物生长前期，覆膜增加地温加速作物生长的效果较好，覆膜积温补偿效应更明显。在AquaCrop模型中，相比方法一，方法二在冠层覆盖度、地上部生物量、作物产量和土壤贮水量模拟方面均表现出了一定的优势，且其能更好地解释覆膜措施对冬小麦-夏玉米轮作系统作物发育进程的影响。 |
| 英文摘要: |
| Based on the winter wheat-summer maize rotation experiment from 2013 to 2018, this paper explored compensatory effect characteristics during the winter wheat and summer maize growing season, estimated the range of compensatory coefficient in southern Loess Plateau, and examined advantages and disadvantages of two methods for the compensatory effect using the AquaCrop model. The first method used model’s own parameters and the second method coupled the compensatory coefficient with the AquaCrop model. The results showed that the plastic mulching increased the soil temperature from sowing to overwintering, and the increase in soil temperature gradually disappeared and the decrease in soil temperature started from regreening during the winter wheat growing season. Soil temperature increase under plastic film mulching was found during the whole summer maize growing season. Thus, the compensatory effect had a threshold time around late overwintering period. The average value of compensatory coefficient was 1.08 from sowing to seeding stage and was 0.54 from seeding to overwintering stage for winter wheat. For summer maize, the average value of compensatory coefficient was 0.81 from sowing to seeding stage and 0.63 from seeding to tasseling stage. The results indicated that the compensatory effect was more obvious during the early growth stage of crops, and the increase in soil temperature significantly accelerated crop growth. For the AquaCrop model, compared with method 1, method 2 showed some advantages in simulating canopy coverage, aboveground biomass, crop yield, and soil water storage and better explaining how plastic film mulching affecting crop development in winter wheat\|summer maize rotation system based the compensatory effect. |
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