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一、杂交水稻生产进入了一个新的阶段回顾我国杂交水稻的发展历史,大致经历了“发展——停滞——再发展”的过程。自1976年推广杂交稻,到1981年以迅猛之势发展到95万亩,占晚稻面积的64.1%;1982～1983年,由于种子退化,加上连续三年早寒露风的影响,使杂交水稻生产停滞不前;从1984年开始,随着一批新组合的出现,使杂交水稻生产进入了一个新阶段。主要表现在:一是新组合的出现,突破了长期以来组合单一的局面,开辟了杂交水稻发展的新领域。二是栽培技术有了新的突破。首先是规范化栽培。一些地方把系统工程理论成功地引用
First, the hybrid rice production has entered a new phase Reviewing the history of the development of hybrid rice in China, generally underwent a process of “development-stagnation-re-development.” Since 1976, hybrid rice was popularized, and by 1981 it rapidly developed to 950,000 mu, accounting for 64.1% of the area of late rice. From 1982 to 1983, due to the degeneration of seed and the influence of the early cold and dew winds for three consecutive years, hybrid rice Production stagnated; since 1984, with the advent of a number of new combinations, hybrid rice production has entered a new phase. Mainly manifested in: First, the emergence of a new combination, breaking the long-standing combination of a single situation, opened up a new area of hybrid rice development. The second is a new breakthrough in cultivation technology. The first is standardized cultivation. In some places, successful references to systems engineering theory