Reasons for low germination rate of Rice Seeds

Rice is the most important grain crop in China. The most common way to plant rice is to sow seedlings. However, many growers have the problem of low seed germination rate when sowing seedlings. So what is the reason for the low germination rate of rice seeds? Let's take a look at the detailed introduction.

1, high temperature and high humidity climate

Usually, the higher the planting maturity of rice, the greater its germination rate. Generally, it takes 25 days for seeds to mature. The suitable temperature for seed germination of rice is 30-35 ℃, and the lowest temperature is 10-15 ℃. However, due to the different flowering parts of seeds on the same plant, the flowering maturity occurs before and after. The fully mature planting dormancy is shallow and easy to develop, while the immature planting dormancy is deep and difficult to germinate. The high temperature and rainy climate is suitable for seed germination, while late rice ripening period is just high temperature season, and it will sprout in the field in case of rainy weather.

2. Improper harvest time

The dormancy period of rice is not obvious. If the harvest is too early, the seeds are not fully mature. In the environment without complete drying, the seeds still have respiration. The nutrient consumption of the seeds is serious, so the germination rate is low. If the harvest is too late, the seeds will sprout directly in the environment of high temperature and high humidity, which will also affect the germination rate. In addition, too much moisture in the seeds will accelerate its aging and lead to germination rate. Therefore, we must master the appropriate time when harvesting, not too early or too late.

3. Improper drying

After harvesting, seeds must be dried and cleaned up before storage, but due to the large number of seed units and limited space, there is a lack of drying equipment. If not turned in time during drying, the grain pile will be steamed, and the embryo of the seed will be burned easily, resulting in the loss of activity of the seed and the germination rate close to zero.

4. Mechanical damage

The seed coats of some rice varieties will burst after stirring, and these varieties are also easy to shell during harvesting and processing. Without the protection of seed coat, these seeds are extremely difficult to develop, even after germination, they are extremely difficult to form seedlings, and they rot easily in the field.

The above reasons for low germination rate of rice seeds are introduced. I hope they can help you. If you want to know more about it, please pay attention to us.