杂交晚稻免耕抛栽立苗困难的原因及对策

The Causes of and Countermeasures for the Difficult Seedling Standing in the Cultivation of Zero-tillage and Seedling Broadcasting in Late Cropping Hybrid Rice

分析了杂交晚稻免耕抛栽立苗困难的原因 ,即田土硬实板结 ,秧苗秧龄过长 ,抛秧田水过深 ,底肥量小效迟 ,抛后遭遇风雨 ,禾桩杂草较多等。提出选用大孔径秧盘 ,填充粘性营养土 ;培育适龄壮秧 ,及时喷施多效唑 ;抛前化学除草 ,增施速效性化肥 ;午后浅水高抛 。