一九七七年春,我们种玉米丰产试验一亩,亩产干粒1061.8斤,为我市玉米生产首创千斤纪录。现初步总结如下:试验经过1月26日播种。前作水稻,土壤肥力中等,去冬机耕两次,翻犁晒白。播前深耕播种沟宽1.2尺,深度0.9尺左右,结合施6000斤堆肥改土。品种为郑单二号,播前浸种催 In the spring of 1977, we planted one mu of high-yield corn yield, with 1061.8 kg of dry grain per mu producing the first kilogram record for our city’s corn production. Preliminary summary is as follows: The test after January 26 sowing. Former rice, soil fertility medium, twice a year to winter plowing, turning the plow white. Sowing before planting sowing ditch width of 1.2 feet, a depth of about 0.9 feet, combined with 6000 kg of compost to soil improvement. Zheng Dan two varieties for the second, before sowing seeds reminder