水稻旱育稀植技术是国际上水稻栽培的新技术,具有节省资源、降低成本、优质高产的特点,适应我国国情,受到有关部门的高度重视,计划在2000年全国推广2亿亩。但是旱育秧苗经常发生严重的立枯病,使旱育秧的安全性差,操作复杂,成本提高,极大地妨碍了旱育稀植技术的推广。 Rice is a new technology of rice cultivation in the world. It has the characteristics of saving resources, reducing costs and producing high quality and high yield. It adapts to China's national conditions and is highly valued by relevant departments. It is planned to promote 200 million mu in 2000. However, drought-tolerant seedlings often have severe fall blight, which makes the safety of dry nursery seedlings poor. The operation is complicated and the cost is increased, which greatly hinders popularization of drought-nurturing and sparse planting techniques.