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我区于1982年开始引进杂交水稻,当年试种粳稻“秀岭A×C_(57)”(以下简称杂交水稻)52亩,1985年发展到7万亩,1986年发展到15.2万亩。一般亩产1300～1500斤,比当家品种京引39增产20～30％,有的高达1789.6斤/亩。但有的只有1100～1200斤/亩。为了探讨杂交水稻的增产潜力,研究栽培中的主攻方向,笔者就杂交稻产量构成因素进行了回归、相关分析。一、杂交粳稻产量构成因素的数理统计
In 1982, the district started to introduce hybrid rice. In that year, 52 acres of japonica rice “Xiulingling A × C_ (57)” (hereinafter referred to as hybrid rice) was planted, reaching 70,000 mu in 1985 and 152,000 mu in 1986. General mu produce 1,300 to 1,500 kilograms, compared with the original varieties Beijing cited 39 yield 20 to 30%, and some up to 1789.6 pounds / mu. But some only 1100 ~ 1200 pounds / mu. In order to explore the yield potential of hybrid rice and study the main direction of cultivation, the author made a regression and correlation analysis on the yield components of hybrid rice. First, the hybrid japonica rice yield factors of the mathematical statistics