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花生是我国主要经济作物之一。我们唐山地区多少年来一直是用犁铧开沟,手工点播。不但效率低、劳动强度大,而且往往误了农时,造成减产。为此,我们从1971年开始,组成了由工人、干部、技术人员参加的三结合小组,对花生播种机进行了研制。经过三年多的反复实践,改进和提高,外学内创,反复试验140多次.研制成BH—4型倾斜圆盘式花生点播机(见图1)。两年多来分别在赵店子、杨官营等九个公社中的二十五个大队试用,共播种花生二千六百四十亩(其中1973年播种一百四十亩,1974年已播二千五百亩)。从试用情况看,效果较好,受到贫下中农欢迎。机播比犁开沟人工点播提高效率十倍。早出苗1～2天,一般可增产20～30%,而且出苗率高。
Peanut is one of China’s major cash crops. We Tangshan area for many years has been using plowshare ditches, hand-on-demand. Not only inefficient, labor-intensive, and often mistaken for agriculture, resulting in reduced production. To this end, we started from 1971 and formed a three-in-a-small group of workers, cadres and technicians to work on the peanut planter. After more than three years of repeated practice, improvement and improvement, the Chinese Academy of Sciences has repeatedly experimented more than 140 times and developed the BH-4 tilted disk-type peanut-based on-seeder (see Figure 1). Over the past two years, twenty-five brigades from nine communes, including Zhao Dianzi and Yang Guanting, were tried to sow a total of 2,640 acres of peanuts (of which 140 were planted in 1973 and two were sown in 1974 Thousands of acres). From the trial situation, the effect is better, welcomed by the poor peasants. Machine sowing plow ditching artificial on-demand to improve efficiency ten times. Early emergence of 1 to 2 days, the general increase of 20 to 30%, and the emergence rate is high.