一、前言: 上海市郊区粮食作物主要是水稻和三麦。随着“农业学大寨”的群众运动的深入发展,三熟制的种植面积不断增加,在整个收获期间,季节紧,农活集中,劳力紧张,且劳动强度大,为了保证不误农时,确保农业增产,减轻繁重的体力劳动,贫下中农迫切要求稻麦收获机械化。此外,上海郊区的粮食作物一般产量较 First, Foreword: Shanghai suburbs food crops are mainly rice and three wheat. With the deepening development of mass movement in Dazhai Agricultural University, the acreage of three-cropping system is continuously increasing. During the entire harvest period, the season is tight, the farm work is concentrated, the workforce is tense, and the labor intensity is great. In order to ensure not misuse, Increasing agriculture, reducing heavy manual labor, poor middle peasants urgently require the harvest of rice and wheat mechanization. In addition, the general output of food crops in the suburbs of Shanghai is relatively high