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1955年春季,江苏睢宁县推广了沈阳市地方国营辽宁农具厂制的圆盤式畜力十行播种机,在播种一般作物时,均能达到排种均匀,惟在播种晚玉米时很难达到要求。其原因是:①玉米子粒大小不一,且大部扁而不圆,影响种子均匀排下。②排种舌后部的面较宽,玉米子粒从排种杯落下时会产生停积;其次排种舌的前部斜面太小,都会使排下的种子稀稠不一。④当地播种晚玉米一般习惯都是行距1.35尺,播量
In the spring of 1955, Suining County, Jiangsu Province, promoted the disc-type livestock ten-row sowing machine manufactured by Liaoning Shenyang Agricultural Machinery Factory, a local state-owned unit in Shenyang City, which can achieve uniform seed setting when sowing ordinary crops but is hard to meet the requirements when sowing late corn . The reason is: ① corn size varies, and most of the flat and not round, affecting the seeds rowed down evenly. (2) The rear surface of the rowing tongue is wider, and the corn seeds will be stopped when they fall from the rowing cup. Secondly, the front slope of the rowing tongue is too small to cause the seeds in the row to be thin and thick. ④ Lateral sowing of local corn is generally the habit of spacing 1.35 feet, sowing