我们自1983年起,开始研究双季杂交水稻亩产吨粮的生态、生理、生化指标及其配套技术。1984年9个以种植威优35为主的双季杂交水稻亩产吨粮试验示范点,面积共552.85亩,经地、县、乡、村四级验收,平均亩产干谷1977.66斤,比1983年平均亩增48.09斤。其中有4个点亩产超过吨粮,有3个点 Since 1983, we started to study the ecological, physiological and biochemical indexes and their supporting technologies of double-season hybrid rice yield per ton of grain. In 1984, nine of them were planted with 552.85 mu of double-season hybrid rice per mu of grain yielding mainly for planting Weiyou 35, and were checked and accepted by prefecture, county, township and village levels with an average yield of 1977.66 kg per mu 1983 average mu by 48.09 kg. There are 4 points more than tons of grain per tonne, there are 3 points