Soak the seeds with clean water at 20℃ ~ 30℃ before accelerating germination, so that the seeds can absorb enough water and accelerate germination. Soaking time varies with seed maturity and water temperature. The more mature the seed is, the longer it takes to soak the seed, and the longer the water temperature is lower. Generally, seeds need to be soaked for 5 ~ 6 hours.

Second, accelerate germination.

Seed germination needs to meet the required temperature, moisture and oxygen, avoid light, and be carried out under backlight. Germination is the fastest under the conditions of suitable humidity, good air permeability and no light at 25℃ ~ 30℃. Wrap the soaked seeds in wet gauze or wet towel, put them in a big bowl or a small basin, and wash them with water at 25℃ ~ 30℃ twice a day1~. It is best to mix the seeds with fine sand which is 3 times the volume of the seeds, put them in a basin, turn over the bank 1 ~ 2 times a day, and replenish water when the fine sand is dry. Seeds need to be heated at 30℃ for 8 hours and at 20℃ for 16 hours every day, and the buds will be neat. Under normal circumstances, it can germinate in 5 ~ 6 days.

Third, the growth environment of passion fruit:

1, temperature

The optimum growth temperature of eggs is 20℃ ~ 30℃. Generally, it grows well at a temperature not lower than 0℃. When it reaches -2℃, plants will be seriously injured and even die. The area with an annual average temperature of 65438 08℃ is the most suitable for planting and easy to obtain high yield. Therefore, it is widely distributed in warm and humid areas in southern China, especially in Hainan.

Step 2: Moisture

Generally, when the annual rainfall is between 1500 ~ 2000mm, and the distribution is uniform, the eggs and fruits grow best, while the planting area for commercial development should not be less than1000 mm. Eggs and fruits are drought-tolerant, but in case of drought, they should be irrigated. Too dry soil will affect the development of vines and fruits. In severe cases, branches will wither, fruits will not develop and fruit will drop. Pay attention to drainage in rainy season.

3. Lighting equipment

As a tropical fruit, the fruit likes plenty of sunshine to promote the growth and nutrient accumulation of branches and vines. Long-term sunshine conditions are conducive to eggplant flowering. In the area with annual sunshine hours of 2300 ~ 2800 hours, eggplant grows well, accumulates more nutrients, and the branches and vines grow fast, bearing early fruits and yielding high. The most suitable growth temperature is 20℃ ~ 30℃, generally not lower than 0℃ for good growth. When it reaches -2℃, plants will be seriously injured and even die.

4. Land

Eggs and fruits have strong adaptability and low requirements for soil. The loam layer produced in a large area is at least 0.5 meters, with fertile and loose soil and good drainage, and the soil pH value is 5.5 ~ 6.5.

Extended data:

cutting

1, cutting selection

Semi-lignified passionflower branches without pests and diseases should be selected for cutting. After cutting the branch into small pieces, leave two bud eyes at intervals, and leave 2cm of upper and lower bud eyes at both ends of the branch. After that, the leaves of the lower bud eye should be cut off, and two-fifths of the leaves of the upper bud eye should be kept, which is beneficial to reduce water evaporation and improve the survival rate of cutting.

2. Cutting treatment

Cutting cuttings can be soaked in 800 times of 70% thiophanate methyl solution for 10 minute, then soaked in 50 mg/l ABT rooting powder solution for 1 hour, and then taken out and dried to prepare cuttings.

2. Cutting management

When cutting, you can choose nutrition bags for cultivation. Using peat soil or fine soil organic fertilizer mixed with sand as matrix, cuttings were directly cut in nutrient bags, and the depth was 2/3 of the length of cuttings. To avoid light after watering, you can cover a small arch shed with plastic film to prevent rain and keep warm. Watering depends on the weather. In a word, you should ensure that the soil is moist during the whole seedling period, and it will sprout and take root in 20-30 days after cutting. You can use 70% tobrazine after rooting.

Reference: Egg Fruit-Baidu Encyclopedia