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位于川东南高温伏旱区的重庆,常年因7月下旬、8月上旬存在规律性高温伏旱,影响生育期长的水稻品种抽穗扬花。过去这些地区被视为种植杂交中稻的禁区。近年重庆市的农技干部和省“高温区杂交中稻避灾高产稳产栽培技术研究”协作组经过多点试验研究、生产示范,基本解决了生产中的技术问题。一些地、县相继出现亩产1,200斤以上的杂交中稻高产田块,但成片的不多。为探索较大面积杂交中稻高产规律,1984年我们在巴县回龙坝乡兰井村一、二、三组用“汕
In Chongqing, a high-temperature and drought-prone area in southeastern Sichuan, there are regular high-temperature and volt-day drought in late July and early August, affecting heading and flowering of rice varieties with long growing period. In the past these areas were considered forbidden areas for hybrid mid-season rice cultivation. In recent years, Chongqing’s agricultural cadres and provincial “high-temperature hybrid rice in high-yield and stable high-yield cultivation techniques research” collaborative group after more experimental study, production demonstration, the basic solution to technical problems in production. In some areas and counties, there have been high-yielding hybrid rice mid-high yield plots of more than 1,200 kilograms per mu, but not much in quantity. In order to explore the law of high-yielding hybrid rice in large areas, in 1984 we reclaimed Longgang Township, Balang Lan Village one, two or three groups with "Shan