气候变化对陇东塬区冬小麦生长发育及产量的影响

分析西峰农业气象试验站冬小麦生育期的观测资料表明,气候变暖使陇东塬区冬小麦全生育期天数缩短,主要是越冬期天数缩短,而冬小麦实际生长的天数并未缩短;气候变暖使冬小麦播种期推迟,成熟期提前,从而使麦田的休闲期延长,延长了复种作物的生长期,为提高气候资源的利用率和单位面积的产量提供了保证。气候变化对冬小麦气候产量的影响具有明显的周期性。

Influence of climate change to growth and output of winter wheat in loess plateau region of east Gansu

This article analyses the observed data during the growth period of winter wheat in Xifeng Agricultural Meteorology Experimentation Station. The results show that the climate calefaction makes the whole growth period of winter wheat shortened, especially the over-wintering stage, but the real growing days is not reduced. The climate calefaction causes the seeding stage of winter wheat postponed, and the mature stage brought forward, thereby it is beneficial to prolonging the fallow period of field, to extending the growing period of sequential autumn crop, and to improving the use efficiency of climate resources and the output of per unit acreage. The climate changes affect the climate output of winter wheat with a remarkable periodicity.