我市常年有麦、玉、苕三熟带状种植春玉米地200多万亩(1亩=1/15公顷,下同),根据光温条件,在麦、玉、苕三熟基础上,利用春玉米收后到播种小麦的3个月间隙时间,增种增收一季秋大豆(干豆),并筛选出适宜连作的秋大豆品种和配套栽培技术。我所从1996年起进行了春玉米连作秋大豆试验和示范,结果平均亩产秋大豆100公斤左右,亩增纯收入300元以上,实现了旱地用养结合,生态效益好的麦、玉、苕、豆一年四熟高产高效种植新模式,为发展我 There are more than 2 million mu (1 mu = 1/15 hectare, the same below) of maize, jade and 苕 perennial strip spring planting spring corn in our city. According to light and temperature conditions, Using spring maize harvest to sowing wheat three months gap time, increase the income of a season of autumn soybeans (dry beans), and screened suitable continuous cropping varieties of autumn soybeans and supporting cultivation techniques. Since 1996, we have carried out experiments and demonstrations on the continuous cropping of spring corn with autumn soils. As a result, the average yield per acre is about 100 kg per acre of autumn soybeans and the net income per mu is more than 300 yuan. This has enabled the utilization of wheat and jade,苕, beans a year four high-yielding and efficient planting new model for the development of me