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1灌排结合,保证墒情大喇叭口期是营养生长和生殖生长同时并进期。孕穗至灌浆期玉米对水分需求量大,尤其是抽穗前后,如干旱缺水,将造成大幅度减产,甚至绝收。此期间2～3次灌水可大幅度增加玉米产量。要重点浇好玉米开花水和灌浆水,做到发生旱情及时灌溉,以保持地皮不干为宜。但浇水要结合天气变化,如遇涝灾要及时排水,以免造成倒伏,保证玉米正常生长。
1 Irrigation and drainage combined to ensure that the big mouth stage moisture content is vegetative and reproductive growth at the same time and progress. Maize booting to the filling stage of the water demand, especially before and after heading, such as drought and water shortages, will result in a substantial cut, or even absolutely. During this period 2 to 3 times irrigation can greatly increase the yield of corn. To focus on pouring corn flowering water and grouting water, irrigation in time to achieve drought, in order to keep the land dry is appropriate. However, watering should be combined with weather changes, such as flooding in a timely manner drainage, so as to avoid lodging, to ensure the normal growth of corn.