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僵苗坐蔸不发,是潜育性稻田早稻低产的主要原因。湖北省四湖地区由于地势低洼、涝渍严重。许多稻田潜育化,早稻僵苗不发,导致常年早稻亩产250公斤左右,成为该地区影响粮食生产不断发展的重大障碍。中国科学院长沙农业现代化研究所水稻耐潜育种组和“四湖项目”农作物生态栽培组科技人员,经过五年多的努力探索,终于选育出了适合于低湖区洼田和山丘区山荫冷浸田及深泥脚田等潜育化稻田种植的中熟早籼品系“长桃辐2号”。1986年至1990年先后在湖南长沙、桃源、常德及湖北公安、监利等多点试种累计16万余亩,表现出综合抗性好、适应性强、耐冷耐潜、食味较良的特点。
Stiff seedlings sit still, is the main reason for low yield of early rice in the gleam of paddy. Four Lakes in Hubei Province due to low lying, waterlogging serious. Much of the garages have been gob- ghed up and the lack of vigorous early rice has led to a per-mu yield of about 250 kg of early-season rice, which has become a major obstacle to the continuous development of food production in the region. Sci-Tech Research Institute of Changsha Institute of Agricultural Modernization, Chinese Academy of Sciences and the scientific and technological personnel of the “Four Lakes Project” crop ecological cultivation group, after more than five years of hard exploration, finally bred for the low lake area and hillside shanyin Cold-dip fields and deep mud paddy fields and other sub-cultivated rice planted early maturing indica variety “long peach spokes on the 2nd.” From 1986 to 1990, it had accumulated more than 160,000 mu of land in Changsha, Taoyuan, Changde, Hubei Province and public security and Jianli of Hunan Province. It showed the characteristics of good comprehensive resistance, strong adaptability, cold tolerance, good taste and good taste.