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１９９８ 年在临澧国家水稻工程基点开展了优质食用早稻百亩样方高产栽培示范，面积６９４ ｈｍ ２，品种为香两优６８ 和浙９５２１。经测产验收，平均产量达７ ７９４０ ｋｇ／ｈｍ ２。对其产量构成、群体生长动态、干物质积累和施肥水平的多点调查分析后认为，优质早稻产量的提高，主要应围绕促进前期快发，中期适度控制，增加有效穗，扩大库容量，提高生物学产量和收获指数来采取综合配套技术措施。
In 1998, a demonstration project of high-yield cultivation of high quality edible rice with a mu yield of 694 hm 2 was conducted in Linqu National Rice Project Base. The varieties were Xiangliangyou 68 and Zhe 9595. After test and acceptance, the average output reached 7 794 0 kg / hm 2. After analyzing and analyzing its yield components, population growth dynamics, dry matter accumulation and fertilization levels, it is considered that the improvement of the yield of good-quality early rice should mainly focus on accelerating the rapid and medium-term control of the early stage, increasing the effective panicle, expanding the storage capacity and increasing Biological yield and harvest index to take comprehensive and supporting technical measures.