我团位于山东西南部的南阳湖畔,四面河湖环绕,地势低洼易涝,海拔33.75—35.00米,坡降五千分之一,总耕地面积2万亩,可耕地1.5万亩(图1)。土壤均系黑粘土,养分丰富,水源充沛。但解放前在国民党反动派的压榨下,河湖淤渍,河道经常决口漫溢,水位涨落不定,致使这片土地杂草丛生,土地荒芜,是蝗虫 My regiment is located in the southwest of Shandong Nanyang Lake, surrounded by rivers and lakes, low lying and easy floods, elevation 33.75-35.00 meters, one-thousandth slope, the total cultivated area of ​​20000 acres, 15000 acres of arable land (Figure 1) . The soil is black clay, nutrient-rich, abundant water. However, before the liberation of Kuomintang reactionaries under the squeeze, river silt stains, the river often burst over, the water level fluctuated, resulting in the weeds over the land, barren land, is a locust