中国科学院成都生物所张正文等研究人员,自1983年以来,先后开展了低洼易涝淤土地区水稻旱种的生态适种性及关键技术的研究。在实验中,他们解决了播种期、播种量、出苗、灭草促苗、防病灌溉等技术难关,终于获得成功。运用这一技术在河南封丘地区推广3万余亩旱作水稻,亩产500—600斤,高达800—900斤,非涝年比旱粮增产1—2成,涝年则成倍增长。稻田用水量减少1/3以上,用肥量减少 The Chinese Academy of Sciences, Chengdu Institute of Biology, Zhang Zhengwen and other researchers, since 1983, has carried out low-lying areas prone to floods and silt cultivation of rice ecological adaptability and key technologies. In the experiment, they solved the technical difficulties of sowing, sowing, emergence, weeding and seedling prevention and disease prevention irrigation and finally succeeded. The use of this technology in Henan Fengqiu promote 30,000 acres of dry rice, per mu 500-600 pounds, up 800-900 pounds, non-flooding than dry grain yield 1-2%, flood years are doubled. Paddy water consumption reduced by 1/3, with less fertilizer