增温及干旱对海伦地区大豆生长发育的影响

研究旨在通过WOFOST模型探究不同程度的增温及干旱胁迫对黑龙江海伦地区大豆生长的影响,为当地大豆种植提供帮助。以海伦综合试验站的大豆生产数据为分析材料,用本地化处理后的WOFOST模型分别进行增温及干旱胁迫模拟,测得不同胁迫条件下大豆的生长数据。结果显示,在1℃~3℃的增温胁迫下大豆的生育期明显缩短,叶面积指数随着胁迫的增加不断减小,且产量随着温度的上升逐渐降低,增温3℃的情况下穗重产量下降11.01%,总重产量下降13.72%。在不同程度的干旱条件下,大豆的生育期长度没有明显的变化,但是叶面积指数有显著的下降,且产量受干旱的影响非常明显,其中重旱胁迫下穗部的减产率达13.26%。本研究从作物模型的角度分析了增温及干旱对海伦地区大豆的生长影响,对大豆防灾减灾、稳定增产具有重要意义。

Warming and Drought in Hailun of Heilongjiang: Effects on Growth and Development of Soybean

The purpose of this study is to explore the effects of different degrees of warming and drought stress on soybean growth in Hailun area of Heilongjiang Province by using WOFOST model, and to provide reference for local soybean planting. The soybean production data of Hailun Comprehensive Experimental Station were used as test materials, the localized WOFOST model was used to simulate the warming and drought stress, and the growth data of soybean under different stress conditions were measured. The results showed that under 1℃-3℃ warming stress, the growth period of soybean was significantly shortened, the leaf area index decreased with the increase of the stress, and the yield decreased with the increase of temperature. Under 3℃ temperature increase, the total weight of living storage organs (TWSO) decreased by 11.01% and the total aboveground production (TAGP) decreased by 13.72%. Under different degrees of drought stress, the length of soybean growth period did not change significantly, but the leaf area index decreased significantly, and the yield was significantly affected by drought, particularly, the total weight of living storage organs was decreased by 13.26% under severe drought stress. In this study, the impact of warming and drought on soybean in Hailun was analyzed by crop model, which could have great significance for disaster prevention and mitigation, and stable yield increase in soybean production.