鲁西南沿黄区包括菏泽、东明、鄄城、郓城、梁山等县市,是山东省大豆主产区之一,常年种植面积67万公顷。小麦、大豆连作是长期沿用的一种种植方式,大豆田杂草种类多,危害严重。对鲁西南沿黄区大豆田运用倒置“Ｗ”9点取样法进行杂草调查,现将调查结果综合报告如下:1　调查方法1 Southwest Shandong includes Heze, Dongming, Juancheng, Tancheng, Liangshan and other counties and cities. It is one of the major soybean producing areas in Shandong Province, with annual planting area of ​​670,000 hectares. Continuous cropping of wheat and soybean is a long-term planting method. There are many kinds of weeds in soybean field, which have serious harm. Weeds survey was conducted on the soybean field in the southwest along the Yellow River using the inverted “W” 9-point sampling method. The survey results are summarized as follows: 1 Survey Method 1