Winter and spring are the time to buy tree seeds. In order to buy the ideal seeds, take the explosive method to quickly check the quality of the seeds. The method is to put the seed in a pan or on a hot plate to heat and fry, and all the seeds that can give off a loud sound have sprouting power. The quicker and louder the sound of the seed, the better the quality of the seed. Then calculate the proportion of popping seeds, and then assess the quality of seeds. It should be noted that although the seed can burst, but the sound of a small popping sound is weak, even if it can barely emerge sprouts, seedlings are weak, such seeds can not be used.

Preserving tree seeds in the winter is a very important issue. If it is not properly kept, it will affect the seed germination rate. In general, as long as you pay attention to the following points, you can keep it well.

1, pay attention to temperature changes. As the temperature rises, the amount of respiration of the seeds also increases. When the seed temperature exceeds 40°C it is easily damaged.

2, pay attention to too much water. The higher the seed moisture content, the greater the respiratory intensity and the more nutrients consumed, the weaker the seed emergence.

3, pay attention to prevent smoke. The long-smoked seeds will not only reduce the germination rate and germination potential, but also cause the incidence of seedlings in the spring of the following year.

4, pay attention to prevent mildew gas. Pesticides, volatile odors of chemical fertilizers, seeds and pesticides, fertilizers must be stored separately.

5, pay attention to prevent vapor. Seeds cannot be stored in a large steam room.

6, pay attention not to touch the ground. Whether sacks, bags or other containers are used to hold the seeds, they must not be placed directly on the ground. They must be placed on the surface 40 percent to prevent the seeds from getting wet.

7. Be careful not to use plastic bags for seeds. If the plastic bag is not ventilated, it will cause the seeds to stop breathing, and at the same time, it will also cause moldy deterioration of the seeds with high moisture content.

8, be careful not to suddenly freeze heat. If the seeds are stored outside, do not go to the warm house after freezing and the seeds in the warm room should not be moved outside.

9, pay attention to rain and snow wet. Seed stored outdoors, do not call rain and snow, so as to avoid mildew.

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