研究表明，受全球气候变暖影响，甘肃黄土高原的苹果开花期提前了14天左右，致使苹果的坐果率及品质有所下降。为此，在苹果生产中可行的做法是（   ）

阅读诗歌，回答问题。

                                                                                                                                       绝句

                                                                                                                                    (唐)杜甫

                                                                                                                    迟日江山丽，春风花草香。

                                                                                                                    泥融飞燕子，沙暖睡鸳鸯。

      【注释】泥融：指冻泥融化，又软又湿。