通过两年试验明确了影响直播晚稻分蘖成穗的主要因素，即播种量、施肥量、搁田时间与搁田程度。上述四因素分别影响着直播晚稻各生长发育阶段，并不同程度影响着成穗率的提高。通过诸因素中的不同水平的设置，提出了提高直播晚稻成穗率的促控技术 After two years of experiment, the main factors influencing the tillering of late rice in direct seeding were clarified, that is, sowing amount, fertilizer amount, time and field of retiring. The above four factors affect the growth and development stages of late sowing direct seeding, and affect the rate of spike formation to varying degrees. Through the setting of different levels among the factors, the paper put forward the promotion and control technology of increasing the rate of spikelets of direct seeding late rice