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根据农田试验观测和气象资料平行分析,随着气候变暖,陇东塬区冬小麦冬前各发育期推迟,冬前旺长现象突出,而春季各发育期显著提前,干旱灾害频繁发生;在大秋作物玉米生长过程中,大部分发育期呈现提前趋势,发育期间隔日数显著缩短,春旱和初夏旱危害严重。通过综合分析,在气候变暖情景下,为了提高本区农作物产量,避免不利气候因素的影响,通过调整作物播种期和收获期等农业技术措施,可以有效地提高本区的玉米播种质量,预防冬小麦冬前旺长和减轻春季干旱的危害。同时加强对农业气象灾害的监测、预警和预报服务系统的建设,为地方政府防灾抗灾的正确决策提供科技支撑作用。
According to the field experiment observations and the parallel analysis of meteorological data, with the warming of the climate, the developmental period of winter wheat in Longdongyuan area was delayed before winter and the phenomenon of flourishing in winter was prominent. However, the drought occurred frequently in all developmental stages in spring, Autumn corn crop growth process, most of the developmental period showed an early trend, significantly reduced the number of days after the developmental interval, drought and early summer drought damage. Through comprehensive analysis, in the climate warming scenario, in order to improve the yield of crops in this area and avoid the impact of unfavorable climatic factors, the sowing date of crops and harvesting and other agricultural technical measures can effectively improve the sowing quality of maize in this area, and prevent Winter wheat winter before long and reduce the hazards of spring drought. At the same time, we should strengthen the construction of a monitoring, early warning and forecasting service system for agricultural meteorological disasters and provide a scientific and technological support for the correct decision-making of disaster prevention and disaster relief by local governments.