冬春莴苣(茎用)和浅水藕水旱轮作,可减轻连作障碍,丰富蔬菜市场,提高种植效益。浅水藕5月上旬栽植,11月上旬采收结束。冬春莴苣于9月中旬育苗,11月上中旬移栽,翌年4月底采收结束。每亩收浅水藕1600kg、莴苣3000kg,产值7000元以上,纯收入5000元以上,比一年只种一茬浅水藕每亩增收2500元以上。 Winter spring lettuce (stems used) and shallow water lotus dry rotation, can reduce continuous cropping obstacles, enrich the vegetable market and improve planting efficiency. Shallow lotus root planted in early May, early November harvest end. Winter spring lettuce nursery in mid-September, mid-November transplanting, the end of April the following year the end of harvesting. Shallow water lotus per acre received 1600kg, lettuce 3000kg, the output value of more than 7000 yuan, the net income of 5,000 yuan more than a year only a crop of shallow water lotus per acre more than 2,500 yuan income.