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玉林地区杂交水稻优质高产的制种技术是在不断地完善和提高的。1975年开始试制339亩,亩产只有19斤,到83年制4.6万亩,单产提高到166.5斤,种子纯度一般都达到国家规定的一、二级种标准。博白县种子公司的制种基地一径口大队,83年实行双季连作制种2351亩,年亩产杂交种子559斤,高产田块亩产达864.5斤。从9年的实践剖析,杂交水稻制种优质高产的主要因素有如下四个方面:
Yulin region hybrid rice high yield and quality of seed production technology is constantly improving and improving. Trial production of 339 acres in 1975, only 19 kg per mu to 83,000 46,000 mu, yield increased to 166.5 pounds, the purity of seeds generally meet the national standards of the first and second species. Bobai County seed production base of a diameter Koukou brigade, 83 double cropping continuous production of 2351 acres, the annual output of 559 jin of hybrid seed per mu, high-yield plots yield 864.5 kg. From nine years of practical analysis, the main factors of high yield and quality hybrid rice seed production has the following four aspects: