Drought is a natural disaster that has the greatest impact on China's agricultural production, and it is also the most common and widely distributed one. In China, drought is serious not only in the northwest where precipitation is scarce, but also in the eastern monsoon region. The measures taken include: ① strengthening drought monitoring and forecasting, establishing early warning mechanism and scientifically guiding drought-resistant water conservancy projects; ② Rational exploitation of groundwater; ③ Developing water-saving agriculture and popularizing advanced irrigation technology; ④ Change the agricultural planting structure and choose drought-tolerant crops; ⑤ Artificial precipitation enhancement; ⑥ Save water and prevent water pollution; ⑦ Inter-basin water transfer, etc. Therefore, in order to reduce the adverse effects of this drought on winter wheat in Taian city, the countermeasures are: drilling wells for irrigation and timely artificial precipitation enhancement.
So choose: a