Pruning method of asparagus
1, leafy branch deletion pruning:
When the growth position of small leaflike branches on the main branch of asparagus is not ideal or missing for some reason, short cutting can be carried out at the appropriate position of the main branch, and the hidden buds will be forced to germinate without pruning.
Generally, the height of cutting is the height of leaflike branch germination, and the position where branches have barbs is the position where leaflike branches germinate. The greater the thickness of branches, the higher the germination rate of hidden buds.
2, the whole plant update pruning:
If the branches and leaves of the whole asparagus grow poorly due to strong sun burn, dry potted soil, lack of fertilizer or some unknown reasons, the whole asparagus can be updated and pruned. When updating and pruning, all leafy branches of asparagus can be cut off, but attention should be paid to the barbed part of the branches, which determines whether the remaining branches are evenly distributed.
3, tendrils pruning:
Shoots are generally fragile and slender. If you don't want to keep the seeds, you can cut them from the roots at one time to make the seeds look good. If you want to increase the number of leaflike branches or fill gaps, you can prune in a certain part, and pay special attention to comprehensive management such as fertilization when pruning.
Growth habit of asparagus
1. Asparagus likes warm, humid and semi-cloudy ventilation environment. It can't stand the cold and drought in winter. Don't water too much, the roots will rot. In summer, direct sunlight should be avoided. It is better to use loose, fertile sandy loam with good drainage and rich humus. It is advisable to keep the room temperature at 12 ~ 18℃, and ventilate and dissipate heat when it exceeds 20℃. The suitable growth temperature is 15 ~ 25℃, and the wintering temperature is 5℃.
2. Asparagus is not cold-tolerant, drought-tolerant, prefers warm and semi-cloudy environment, and avoids frost. Asparagus has strict requirements on pot soil, which requires looseness, fertility, good drainage and good air permeability, and the pot soil is preferably neutral. It can be made of humus, sand and decomposed fertilizer. Asparagus is not cold-tolerant, but also afraid of heat, and the suitable growth temperature is between15 and 25℃. That is, it can't be exposed to direct light and can't stay in the shade for too long.
3, watering should not be too much, master the principle of wet and dry watering. Fertilization once a month can meet the growth needs. The biennial asparagus is the most ornamental. Three-year-old asparagus began to sprout branches and vines, and it was necessary to set up a scaffold for it to climb. If you don't want to set up scaffolding, you can also cut off the climbing branches at the roots. Asparagus is not cold-tolerant, and its overwintering temperature is 65438 00℃.
Cultivation method of asparagus
1. Pot soil: Pot soil for asparagus cultivation should be fertile sandy loam, warm and humid, with many rotten branches and good drainage. Generally, it can be prepared according to the ratio of 4 parts of garden soil, 2 parts of humus soil, 2 parts of compost soil and sand 1 part, and the soil should be changed and fertilized regularly. If excessive fertilization causes "root watering", it is necessary to dump the fertilizer in the basin, wash the clods with clear water, and then replace them with new soil for cultivation.
2, watering: watering is the focus of asparagus cultivation, too much watering, pot soil is too wet, easy to cause root rot, too little watering, will lead to brown leaves. Therefore, in the process of watering, it is necessary to look at the weather, growth and the dryness and wetness of the basin soil, so as not to water it, but to water it thoroughly. When it is hot and dry, it can be humidified and cooled by spraying water on the leaves, and watered less in winter.
3. Fertilization: Asparagus is not good at fertilization, but it cannot be short of fertilizer. Due to the limitation of potted soil, asparagus cultivation must be supplemented with nutrients in time to meet the growth requirements. In the process of asparagus fertilization, it is necessary to make more fertilizer and less fertilizer, and not to apply thick fertilizer, otherwise it will cause yellow leaves. Generally, you can choose to apply decomposed dilute liquid fertilizer once a month. After the plants grow and take shape, the reduction of fertilizer application can be properly controlled. Topdressing 1 ~ 2 times of thin fertilizer containing ammonia and phosphorus every month during the growth period can promote the vigorous growth of leaves, and other liquid fertilizers can also be used. It should be noted that it is not advisable to apply too much fertilizer at flowering stage, and liquid fertilizer should be applied twice in May-June and September-10 respectively.
4. Lighting: Asparagus planting should not be exposed to the hot sun. In hot season, it should be placed in a cool and ventilated place. At the same time, asparagus is afraid of both wind and rain during flowering, so it should be well ventilated. When the weather is fine, you can put it outdoors to receive the sunshine. The temperature of potted asparagus in winter should be kept above 5℃ to avoid freezing.
5. Placement: Asparagus likes a clean and ventilated environment. If stimulated by harmful gases such as smoke, gas and pesticides, the leaves will turn yellow, curl and even die. Therefore, asparagus should be placed in a clean and well-ventilated environment, away from decorative materials such as marble that release mercury gas.