农作物的产量90%以上来自植株光合作用所合成的有机物。合理利用光能,始终是农业生产上研究的重要课题。我市从提高水稻光能利用率的目的出发,根据边际优势的科学原理,从1978年以来,在早、晚稻上开展了“东西向、宽窄行”栽种方式的试验、示范和推广工作。八年来的实践证明,“东西向、宽窄行”能合理利用光能,改善田间小气候,促进水稻生长发育,是获得高产的一项重要技术措施.据1978—1980年30个单位统计结果,“东西向、宽窄行”比“方形”增产5.6%,达显著水准。到1985年止,全市共推广了45万余亩,获得了明显的增产效果。这一种植方式已成为我市水稻上的一项重要增产技术。 More than 90% of crop yield comes from the organic matter that photosynthesis plants produce. Rational use of light energy, agricultural production has always been an important issue. Based on the scientific principle of marginal advantage, our city has started the experiment, demonstration and popularization of “east-west-width-width” planting methods on early and late rice since 1978. Eight years of practice have proved that “east-west direction and width-narrow row” can make rational use of light energy, improve microclimates in the field and promote the growth and development of rice, which is an important technical measure to achieve high yield. According to the statistics of 30 units from 1978 to 1980, East-west width line “than the” square "5.6% increase, reaching a significant level. By 1985, the city has promoted more than 450,000 mu of land and obtained obvious yield-increasing effects. This planting has become an important technology in paddy production in our city.