How to store winter species

There are two kinds of wet storage methods commonly used for tree species stored in winter: “hiding” and “reserving”. The practice of the pit is to select a high-pitched, well-drained area, dig a pit 0.8m deep and 1m2 in area, cover the rough sand at the bottom of the pit, and mix the seeds and fine sand in a ratio of 1:3. Place it in the pit and fill it 10 cm from the pit. The soil is covered with sand and several straws are placed in the heap for ventilation. The temperature inside the pit is kept at 0-3°C, and the moisture content of the sandy soil is kept at 70%-80%. Stacking can be done outdoors or indoors. The practice of indoor stacking is to choose a place where air is not circulated and where sunlight cannot reach, the ground is covered with a layer of sand, and then a layer of seed is layered with sand. When it is piled to a height of 33-37 centimeters, it is covered with fine sand. To put a few grassy handles for ventilation, the method of outdoor stacking is the same as that of indoor stacking, but a cover is placed on top of the seed piles. To prevent rain and livestock and poultry hazards.

In addition, the storage of seeds also pay attention to the following aspects:

Pay attention to high temperatures. As the temperature rises, the amount of respiration of the seed also increases, and it is easily damaged when the seed temperature exceeds 40°C.

Pay attention to moisture. The higher the seed moisture content, the greater the respiratory intensity and the more nutrients consumed, the weaker the seed emergence ability.

Pay attention to 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.

Pay attention to toxic gases. Pesticides and chemical fertilizers must be stored separately from the seeds.

Pay attention to steam. Seeds cannot be stored in a large steam room.

Be careful not to touch the ground. No matter if sacks, bags or other containers are used to hold seeds, they should not be placed directly on the ground to prevent the seeds from getting wet.

Be careful not to use plastic bags for seeds. The airtightness of the plastic bag will cause the seeds to stop breathing and reduce the germination rate.

Be careful to avoid sudden freezing and sudden heat. Such as long-term storage of seeds outside. Do not go to the warm room again, and keep the seeds stored in the warm room for a long time, and do not get outside.

Pay attention to rain and snow. Seeds stored outdoors, do not let rain wet, so as to avoid mildew.

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