例1盛花期的连续暴雨影响了番茄的正常授粉。为了防止减产,可采取的补救措施是A.喷施硼肥B.追施氮肥C.喷施一定浓度的生长素类似物溶液D.以上均不可取解析生长素能促进果实发育。选C。【变式】向日葵和番茄都能产生果实和种子,向日葵的果实就是平时我们吃的“瓜子”。在上述两 Example 1 The continuous heavy rain at flowering stage affected the normal pollination of tomatoes. In order to prevent production cuts, the remedial measures that can be taken are: A. Spraying boron fertilizer B. Topdressing nitrogen fertilizers C. Spraying a certain concentration of auxin analogue solution D. None of the above analytical auxins can promote fruit development. Select C. [variation] Both sunflower and tomato can produce fruit and seeds. The fruit of sunflower is the “seed” that we usually eat. In the above two