Hawthorn seeds are hard, have poor permeability, and are difficult to germinate. They need to pass through two winter sand traps to release the seed's dormancy period and cause seed shells to crack and germinate. It usually takes 4 years to raise the seedlings of the hawthorn. This is far from meeting the market needs for the development of hawthorn fruit forests. Now introduce the specific practice of hawthorn rapid nursery. Seeds are quickly raised. It is generally good to harvest the fruit in late August. Immediately after harvesting the seeds, the pulp is crushed until the pulp rots and becomes soft, and the crushed water is washed clean. Then, use 2-3 times the boiling water, hot species, with the hot 4-5 minutes after stirring with fish, cool with cold water, soak a day and night, the next day on the slate or cement floor spread into a thin layer of exposure, Turn it once an hour to evenly heat it. After soaking up in the evening and soaking in water, and then the sun the next day, so that repeated 70-80% of the shell cracking, you can prepare sand. In the second and second half of February of the next year, a few germinating sprouts of the seed of the sand can be seen. Seed sowing seeding amount of 30 kg, seedlings generally used in the amount of 15 kg, seedlings unearthed after the timely and uniform seedlings, seedlings management can be carried out by conventional methods. In this way, the seedlings can be planted in the same year and the seedlings can be planted in the same year so that the seedlings can be nursed two years earlier. Rooted rapid nursery. Root-cultivation, also known as asexual reproduction, is mainly to use the cuttings left in the nursery to leave the ground, collect roots with a root diameter of about 0.5 centimeters, cut them into more than 15 centimeters, and have a lot of fibrous root anvils. The root anvil can support the scion for splicing. When grafting, it is advisable to graft with the rootstock with seedlings. The temperature of marrying and grounding in spring rises quickly, and the survival rate can reach more than 85%. Using this method to quickly raise seedlings, the operation is convenient, and root resources can be fully utilized, and seedlings can be cultivated in the year. Pest Control. The pests and diseases that damage the hawthorn mainly include the following: Blight. It is the main disease in the early stage of the growth of hawthorn seedlings. The slightest negligence will cause large dead plants of the seedlings. Therefore, it must be highly valued. The prevention and control methods are as follows: 1.5-2.5 kilograms of ferrous sulfate per acre is sprinkled during soil preparation, or soil water is sterilized by irrigating 300 times of ferrous sulfate water at the time of sowing. When the seedlings grow 2 to 3 leaves, the root system is watered with 100 times of ferrous sulfate water. When you grow 4 true leaves, pour it a third time. This can basically control the occurrence of this disease. powdery mildew. It is the main disease during the growing period of hawthorn seedlings. If it is not controlled in time, it will affect the growth of seedlings, and in severe cases it will cause seedlings to die. Can use 0.3 degrees lime sulfur mixture, or use 800 times chlorothalonil control. Spraying once every two weeks, powdery mildew can be controlled by spraying three times. Insect pests mainly include beetles and locusts. It was found that such insect pests should be sprayed with 1500 times dimethoate for prevention and treatment.
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