一块棉花地，去年收皮棉30吨，比前年增产了5吨。这块棉花地皮棉产量增长了几成？:v;B7F,Z5B:h:x0P+L-L,z0i
算式：提示2D+u3k5^5l3m;O0c({9P4r9v:v;B7F,Z5B:h:x0P+L-L,z0i
答：这块棉花地皮棉产量增长)H9F*J;`;K;B9h4c+s7w8T'l8s2d7|成。:v;B7F,Z5B:h:x0P+L-L,z0i