Causes and solving measures of low germination rate of Maize

Corn is one of the most common crops in China, and it is also the main economic income of many rural families. with the increasing demand for it, its planting area is also expanding. However, many farmers often have a low germination rate when planting, which will often affect the yield and cause economic losses to farmers. What is the reason for the low germination rate of corn? If we solve this problem? Let's take a look at the detailed introduction of the pro-agricultural network.

1. Poor seed maturity.

The germination rate of corn is closely related to the maturity of the seed, the maturity is good, the germination rate of corn is high, and the germination energy is also high, this situation is mainly planted in the area with higher altitude, the temperature of corn decreases continuously in the later stage of grain filling, resulting in the seed does not reach the expected accumulated heat, so the maturity is affected.

Solving measures: when sowing, select varieties with high germination rate, stable yield and strong stress resistance. at the same time, we should also combine the local climatic environment, choose a suitable seed production base, and sow seeds in advance in areas with higher elevations to promote early maturity. to achieve the effect of heat accumulation in the later stage.

2. Moisture

The moisture of seeds is also a main factor affecting the germination rate. When the seeds are harvested and begin to dry, the temperature rises constantly, and the seeds are easy to cause mildew. At the beginning of the seed harvest, the moisture can reach 30% Mur40%, but with the increase of stacking time, the temperature of the stacked corn increases, and the moisture also continues to rise, resulting in the total loss of seed vigor after the decline, resulting in a continuous decline in germination rate, to the final seed mildew, losing the ability to germinate.

Solution: dehydration should be carried out in time after harvest, reduce the moisture of seeds, pay attention to the time of accumulation, not long-term accumulation, drying should also pay attention to methods.

3. Low temperature

Like water, low temperature will cause freezing damage to seeds and lead to low germination rate. after seed harvest, the ground temperature drops sharply by 14-15 degrees below zero, which will directly reduce the germination rate of seeds. If it lasts for as long as a week, there is basically no germination rate.

Solution: the low germination rate of seeds caused by low temperature mainly occurs in the northern region. When harvesting and storing, we must pay attention to the ground temperature, which should not be too low. If the temperature is too low, cushions can be used to isolate the effects of low temperature on seeds.

4. Mechanical damage

In the threshing of corn, now the use is mechanized, convenient and fast, but it is easy to cause mechanical damage, resulting in damage to the embryo of corn, resulting in the increase of abnormal seedlings and the reduction of germination rate.

Solution: threshing must be scientific and reasonable, the most scientific method is manual threshing, basically will not damage the seeds, but time-consuming and gradually eliminated. Nowadays, mechanical threshing is common. In fact, there is a certain relationship between the damage rate of mechanical threshing and the moisture of the seed. The seed moisture is less than 15%, the damage rate is about 1%, while the seed moisture is 17%, the damage rate is 2.5%. So controlling water content can reduce the damage rate.

The above are the reasons and solutions for the low germination rate of corn brought by the pro-agricultural network. I hope it can help you. If you want to know more about corn planting, please pay attention to the pro-agricultural network.