产量低、病虫害重、品质下降是豫南粳稻难以发展的直接原因 将粳稻置于高温、高湿的生态条件下栽培是其病虫害重、产量低、品质下降的根本原因 解决上述问题的唯一途径是推迟灌浆成熟期 ,将成熟期由目前的 9月上旬推迟到 10月中旬 对信阳市 48年主要气候因子统计结果表明 ,推迟粳稻成熟期 ,有利于改善粳稻生长发育的生态条件 ,并能保证安全成熟 Low yield, heavy pests and diseases, the quality is the direct cause of the difficult development of South Japonica japonica Rice will be placed under high temperature and high humidity ecological conditions is the pest weight, low yield, the root causes of quality degradation The only way to solve these problems is Postponing the ripening period and delaying the mature period from the current early September to mid-October The main climatic factors in 48 years of Xinyang showed that postponing the maturity stage of japonica rice is beneficial to improving the ecological conditions of japonica rice growth and ensuring safety mature