cultivation techniques

planting methods

1. Planting can be done in the south, and cold-tolerant varieties can also be planted in the Yellow River basin, but in the cold areas in the north, they should be potted indoors for winter. It can be planted after defoliation and before germination in spring. In order to improve the survival rate, we should avoid damaging the root system and transplant with soil balls. The ground should be planted in the leeward and sunny place. Pot culture soil with 3 parts of humus soil, 3 parts of garden soil, 2 parts of river sand and 2 parts of decomposed manure was selected. Water it once after planting. Maintain in the shade, and move to the sun for normal management after the growth resumes.

2. Light and temperature like warm and sufficient light. In addition to apricot varieties, they are generally resistant to -1℃ except -25℃. High temperature resistance, and can grow at 4℃. Growth and development are best in areas with an annual average temperature of 16 ~ 23℃. Very sensitive to temperature, it blooms when the average temperature reaches-5 ~ 7℃ in early spring.

3. During the growing period of watering and fertilization, attention should be paid to watering, and the soil in the basin should always be kept moist, so that it can neither accumulate water nor be too wet or too dry, and the principle of watering should be mastered. Generally, water less when it is cloudy and the temperature is low, otherwise water more. It can be watered twice a day in summer, once a day in spring and autumn, and thoroughly dried in winter. Fertilization is also reasonable. Before planting, base fertilizer should be applied well, and a small amount of potassium dihydrogen phosphate should be added. Before flowering, potassium dihydrogen phosphate should be applied once, and the decomposed cake fertilizer should be applied once to supplement nutrition. Compound fertilizer can also be applied once in June to promote flower bud differentiation. After defoliation in autumn, apply organic fertilizer once, such as decomposed manure.

4. Pruning Pruning time can be carried out within 2 days after flowering. Give priority to with natural tree shape, cut off cross branches, upright branches, dry dead branches, too dense branches, etc., and cut short the side branches to promote flowers to flourish. After potted plum blossoms are put in pots, they should be re-cut to lay the foundation for making bonsai. Plum piles are usually used as scenery, and plum blossoms of various postures are grafted. Keeping a certain temperature, plum blossoms can be seen in full bloom in the Spring Festival. If you want to blossom on May 1 ST, you need to keep the temperature ~ 5℃ and humid environment, move out in early April, and place it in a sunny and well-ventilated place for maintenance, so that you can see flowers around May 1 ST.

5. flowering control potted plum blossoms are generally for family viewing. After defoliation in winter, put it indoors, keep the temperature at ~ 5℃, gradually heat it to 5 ~ 1℃ after New Year's Day, and fully receive sunlight every day, and often spray water on the branches, and the water humidity should be close to room temperature.

pest control

There are many kinds of plum blossom diseases, among which powdery mildew, leaf shrinkage and anthracnose are the most common.

1. powdery mildew. This disease often occurs in an environment with high humidity, high temperature and poor ventilation. In early spring and March, when plum blossoms germinate, the buds and new leaves are easily infected by germs, and a thin white powder layer will appear on the affected parts, and then black or yellow particles of needle size will appear on the white powder layer, and the leaves will turn yellow and die in the later stage.

2. Leaf shrinking disease. You can spray Tobuzin or carbendazim, or spray 1% Bordeaux solution once every other week for 3 ~ 4 times to cure.

3. Anthracnose. At the initial stage of the disease, 7% Tobuzine 1 times solution or zineb 6 times solution can be sprayed for prevention and treatment. When other diseases are found, spraying the above two kinds of liquid medicine can also be effective.