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在番茄生产上利用杂种优势,具有较大的增产潜力,这在生产单位已有认识。但在利用上一直存在着摇摆与浮动较大的现象,并在某些地区处于停滞的状态,究其原因,以下几种情况值得我们深思。一、推广的杂交组合的小区试验、区域试验与生产试验的产量往往与实际生产效果之间有很大差距。在小区与区域试验中能增产30％的一代杂种,在实际生产中有时增产却不到15％或20％。二、生产队愿意栽培一代杂种,但不愿意杂交制种。1981年哈尔滨市只能满足要求购买一代杂种种子的1/5,生产部门不怕价钱贵,有多少要多少。三、生产部门配制的杂交种,在实际生产中往往优势不明显,同是早粉2号×加8号的F_1,我们制种的增产24.5％,而相邻生产队制种的只增产13％。综合十几年来在番茄杂种优势的研究与推广中遇到的问题,我们认为当前推广番茄杂种优势的主要问题,应从以下几个方面加以解决。一、与推广番茄一代杂种有关
The use of heterosis in tomato production, with greater yield potential, which already know the production unit. However, the phenomenon of greater swing and float in use has always existed and is stagnant in some areas. The reason for this is that the following situations deserve our consideration. First, the promotion of hybrid combinations of cell testing, regional trials and production trials often have a big gap between production and actual production. In the district and regional trials can increase the yield of 30% of hybrids, in actual production sometimes yield less than 15% or 20%. Second, the production team is willing to cultivate a generation of hybrids, but do not want to hybrid seed. In 1981, Harbin could only meet the requirement of purchasing one-fifth of the hybrid seed, and the production department was not afraid of the price being expensive and how much it should be. Third, the hybrids produced by the production department often do not have obvious advantages in actual production. The same is F_1 of early powder No. 2 plus No. 8, and we increase the seed production by 24.5%, while the production of adjacent production teams only increases 13 %. Based on the problems encountered in the research and popularization of tomato heterosis in more than ten years, we think that the main problems in promoting tomato heterosis at present should be solved in the following aspects. First, and promote the generation of hybrid tomato