实践证明,油菜畦田清种比套种或间种油菜增产幅度都大。我们大队1974年畦田清种91亩,平均亩产140斤,而在玉米地里沟沟套种的油菜亩产只39斤;1975年畦田清种104亩,平均亩产183斤,而玉米地里隔沟套种228亩,纯算亩产104斤;1976年畦田清种面积扩大到600亩,平均亩 Practice has proved that rape 畦 Tian Qing intercropping than inter-species or rapeseed yield are large. Our brigade in 1974 Matsuda cleared 91 acres, an average of 140 kg per mu, while in the corn fields ditch intercropping rape per mu yield of only 39 kg; 1975 Muda cleared 104 acres, the average yield 183 pounds, while the corn Trench ditch 228 hectares, accounting for purely 104 pounds per mu; 1976 Kotobuki species area expanded to 600 acres, the average mu