Li Weidong, a member of Jixian County, Yuncheng City, Shanxi Province, called and asked: In recent years, the prices of mountains have risen. The demand for young trees in the hawthorn has also gradually increased. However, the seeds of Piedmont are thick and hard. How do hawthorn seeds be processed to facilitate seed germination?
A: Comrade Li Weidong, hello! Mature hawthorn seeds, like seeds of other tree species, must undergo a series of physiological changes under appropriate conditions to germinate. However, the hawthorn seeds have thick and hard shells, many gums, and small pores, which are not easy to absorb, expand, and crack. Therefore, proper treatment must be performed before sowing in order to emerge normally.
Stratification processing. In the autumn, where the water is dry and difficult to collect, excavate 50 to 100 cm deep, 70 to 100 cm wide, and the length depends on the number of seeds. The bottom of the pit is 5 to 10 cm thick. Mix 1 part of seeds with 5 parts of fine sand, and apply water in appropriate amounts. Pour it into the pit, 10 to 15 centimeters from the ground. The cover sand is level with the ground, and then the soil is over the ground. If the length of the pit is more than 1 meter, it is necessary to insert straw bundles or straw stalks at intervals. Snow is removed at any time in winter. In the next year, from May to August, we will cover the soil and turn it up and down 2 or 3 times to check for mildew and mildew, and take it out in the fall. It can also be planted in the third spring, but it should be sowed early to avoid seed rotting.
Alkaline water, human urine immersion method. After the seeds are sown by this method, they can emerge. The specific method is to first dry seeds for 3 to 4 days, and then soak in warm alkaline water at 60°C for 24 hours (50 grams of seeds with 50 grams of alkali), remove and wash, and dry for 2 to 3 days, and then use fresh human urine 3 to 4 days, wash, dry for 2 hours, until seed coat cracking can be sowed, or use sand to store in the following spring and then broadcast.
Alternating temperature and heat treatment. "Sanjiu" day soak seeds with cold water for about 10 days, make it suck enough water, remove, spread to low temperature, about 5 cm thick, let the seeds freeze, freeze for 1~2 days, and then put in 65 °C Stir in the hot water, then soak for 1 day. This repeated treatment 3 to 4 times, the majority of shell cracks, and then mix it with 5 times the wet sand, storage until the next spring sowing.
Rolling. The dried seeds are poured into the mill pan, rolled, and sieved to remove seed coats and debris. Then they are sown until the following spring. When rolling, the seeds should be spread thick so as not to crush the seed and injure the seed kernel.
Hot water scalding. Pour the wet seeds of the flesh just into the hot water at 75°C (3 parts boiling water to 1 part cold water) and keep stirring. When the water temperature drops to around 25°C, stop stirring, then soak overnight, and use sand to store. . Twenty days before spring sowing the following year, the seeds with sand are taken out, placed in a sheltered place on the sunny side, covered with straw curtains, and the temperature is controlled at 17°C~18°C, once per day, and a small amount of water is sprayed until most species shells crack. sowing.
A: Comrade Li Weidong, hello! Mature hawthorn seeds, like seeds of other tree species, must undergo a series of physiological changes under appropriate conditions to germinate. However, the hawthorn seeds have thick and hard shells, many gums, and small pores, which are not easy to absorb, expand, and crack. Therefore, proper treatment must be performed before sowing in order to emerge normally.
Stratification processing. In the autumn, where the water is dry and difficult to collect, excavate 50 to 100 cm deep, 70 to 100 cm wide, and the length depends on the number of seeds. The bottom of the pit is 5 to 10 cm thick. Mix 1 part of seeds with 5 parts of fine sand, and apply water in appropriate amounts. Pour it into the pit, 10 to 15 centimeters from the ground. The cover sand is level with the ground, and then the soil is over the ground. If the length of the pit is more than 1 meter, it is necessary to insert straw bundles or straw stalks at intervals. Snow is removed at any time in winter. In the next year, from May to August, we will cover the soil and turn it up and down 2 or 3 times to check for mildew and mildew, and take it out in the fall. It can also be planted in the third spring, but it should be sowed early to avoid seed rotting.
Alkaline water, human urine immersion method. After the seeds are sown by this method, they can emerge. The specific method is to first dry seeds for 3 to 4 days, and then soak in warm alkaline water at 60°C for 24 hours (50 grams of seeds with 50 grams of alkali), remove and wash, and dry for 2 to 3 days, and then use fresh human urine 3 to 4 days, wash, dry for 2 hours, until seed coat cracking can be sowed, or use sand to store in the following spring and then broadcast.
Alternating temperature and heat treatment. "Sanjiu" day soak seeds with cold water for about 10 days, make it suck enough water, remove, spread to low temperature, about 5 cm thick, let the seeds freeze, freeze for 1~2 days, and then put in 65 °C Stir in the hot water, then soak for 1 day. This repeated treatment 3 to 4 times, the majority of shell cracks, and then mix it with 5 times the wet sand, storage until the next spring sowing.
Rolling. The dried seeds are poured into the mill pan, rolled, and sieved to remove seed coats and debris. Then they are sown until the following spring. When rolling, the seeds should be spread thick so as not to crush the seed and injure the seed kernel.
Hot water scalding. Pour the wet seeds of the flesh just into the hot water at 75°C (3 parts boiling water to 1 part cold water) and keep stirring. When the water temperature drops to around 25°C, stop stirring, then soak overnight, and use sand to store. . Twenty days before spring sowing the following year, the seeds with sand are taken out, placed in a sheltered place on the sunny side, covered with straw curtains, and the temperature is controlled at 17°C~18°C, once per day, and a small amount of water is sprayed until most species shells crack. sowing.
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