下列说法正确的是（　　）

阅读王安石的《郊行》，完成下题。
                                                                                                                                             郊 行
                                                                                                                                            王安石
                                                                                                                  柔桑采尽绿阴稀，芦箔注蚕成密茧肥。

                                                                                                                  聊向村家问风俗：如何勤苦尚凶饥?
       注芦箔：养蚕器具，用芦苇编织成的席子或筛子，蚕可在上面吐丝织茧。