Abstract: 【Objective】 The dormancy characteristics and germination environment of Bolboschoenus planiculmis were studied. 【Methods】 The effects of different storage methods on the dormancy of it were studied by using Petri Dish Method and Pot method. The effects of different temperature, pH, salt content, soil humidity and buried depth on the germination of it were studied. The germination rate, germination index and average germination time of trigona were measured. 【Results】 The best effect of sleep relieving was water storage at room temperature, and the germination rate was 88.89% after 30 days, while the worst was -20℃ dry storage condition. After 30 days storage, the bulb could not germinate; 25-30℃ was the suitable temperature for the germination of it, with the germination rate of 70%, among which 30℃ was the best germination temperature, and then inhibited the germination of corm with the increase of temperature; pH could germinate within 5-9 range The germination rate of the rhizome was 71.11% - 88.89%, which indicated that the germination rate of triangular bulb of trigonus was not limited by pH;the germination rate of the corm was over 80% when the concentration of NaCl was 0-25 mmol/L, and the germination rate decreased gradually with the increase of the concentration. When the concentration of NaCl was 150 mmol/L, the germination rate of the corm was only 11.11%, and the rhizome could still germinate at high salt concentration; with the soil humidity The germination rate increased ;The germination rate is the largest when the soil depth is 10 cm, which is 82.22%, indicating that is generally in the soil layer of 10 cm. 【Conclusion】 Bolboschoenus planiculmis are like warm, wet and tolerant, and belong to the malignant weeds in cotton field, which is difficult to control.