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千粒重是构成作物产量的重要因素,是作物品种的一项重要经济性状。在育种和栽培工作中,都需要这项数据。过去一般用手工计数,费工、费时、易错。电子数粒机国外早已应用,但目前见到的国内外共13种机型(国外6种),都采用电磁振动排列种子结构。这种结构计数时,因产生大小种子分层而形成选择取样。为此,我们根据农业科研提出的设计要求(主要是随机取样、一机多用、不需清机等),于1976年和上海市曹行公社车沟大队工厂协作,进行研制。1977年7月研制成“科研5型谷物电
Thousand grain weight is an important factor in the crop yield and is an important economic trait of crop varieties. This data is needed for breeding and cultivation. In the past generally used manual counting, labor, time-consuming, error-prone. Electronic counting machine abroad has long been applied, but at present there are a total of 13 kinds of models at home and abroad (6 foreign), the use of electromagnetic vibration arrangement of the seed structure. This structure of the count, due to the size of the seed layer formed by the choice of sampling. To this end, in accordance with the design requirements of agricultural research (mainly random sampling, a multi-purpose machine, without clearing, etc.), in 1976 and Shanghai Caohang commune ditch Brigade factory collaboration to carry out research. July 1977 developed into a "research type 5 grain electricity