1、 Suitable temperature

When the seed is to germinate, the endosperm in the seed, the decomposition of organic nutrients in cotyledons, and the assimilation of organic and inorganic substances into the protoplasm of life are carried out under the catalysis of various enzymes, and the enzyme will catalyze at a certain temperature, so temperature is a necessary condition

2、 Sufficient moisture

The water content of dry seeds is very small, generally accounting for only 5% to 10% of the total weight of seeds. Under such conditions, the seeds will be very weak. After the seeds absorb enough water, the seed coat will expand and soften, oxygen can enter, respiration can be enhanced, and the activity of seeds will be strengthened

3、 Enough oxygen

After the seeds get proper temperature and sufficient water, they will begin to germinate. When the oxygen is sufficient, the respiration of embryonic cells will be gradually strengthened, and the activity of enzymes will be vigorous, which provides the need for seed germination