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我厂在甜菜种子收购中,曾采用过几种定级记价方法。过去以目测定级为主,后来改为剖仁定级记分,基本上符合轻工部一九六四年规定的种子标准试行草案的原则。剖仁定级记分法是以剖仁率代替发芽率,结合千粒重、色泽按比例进行记分。即:剖仁率占90%,千粒重、色泽各占5%。通过几年试行,发现存在不少问题,主要表现在剖仁率代替发芽率的误差上,如,一九七七年调查,平均30%左右的种球有种仁而无发芽能力。原平县大牛店公社施家野庄、大牛店、上默都等大队,1979年产的种子剖仁率都在
I plant in the beet seed acquisition, had used several rating method. In the past, the main objective of grading was visual inspection. Later, it was changed to grade grading and was basically in line with the principle of a draft seed standard stipulated by the Ministry of Light Industry in 1964. Section cut grading scoring method is based on the rate of split kernel rate instead of germination, combined with 1000-grain weight, color, scoring in proportion. Namely: the rate of split kernel 90%, 1000 grain weight, color, 5% each. After several years of trial implementation, many problems were found, mainly in the rate of failure of germination rate, such as the investigation in 1977, an average of about 30% of the bulbs have seed kernel without germination ability. Yuanping County, Daniu Gong commune Shi Jia Ye Zhuang, Daniu shop, on the Mo and other brigades, 1979 seed production rate of seed are in