4 to 1. The College of Plant Protection of Southwest University, formerly known as the Department of Plant Protection of Southwest Agricultural University, was founded in 1952 and became the College of Plant Protection of Southwest Agricultural University in 2002. According to the information of the school, in 2020, there will be 24 students taking the postgraduate entrance examination 1024, and 50 candidates 1, with a ratio of 6 to 0/. 202 1, postgraduate entrance examination 1254, postgraduate entrance examination 178, the ratio is 5 1. In 2022, the proportion of insurance research will be 4: 1. See official website for details.