Cultivation method of asparagus 1 Pot soil: The 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 garden soil, 2 parts humus soil, 2 parts compost soil and 1 part sand, and the soil should be changed and fertilized regularly. What if excessive fertilization caused it? Water the roots? It is necessary to pour pots to remove fertilizer, water clods with clear water, and then replace them with new soil for breeding.
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.
Matters needing attention in asparagus cultivation: 1. Asparagus is not cold-tolerant, so it can't overwinter outdoors in the north. If the temperature drops, it should be moved indoors in time, and the growth environment above 15 degrees Celsius should be provided in winter.
2, it is not advisable to water frequently, and often spray water on the leaves. Foliar spraying 1 ~ 2 times in summer and once every 3 ~ 4 days in winter while keeping the soil moist.
3. Keep the basin soil half dry and half wet. Too dry potted soil will cause asparagus leaves to turn yellow or branches to burn.
4. Don't water the flowers directly with tap water. Leave them 1 2 days in advance, and the water temperature should not be too cold.
5, don't apply raw fertilizer (someone raises asparagus, directly pour the boy's urine on the root of asparagus, and the root is burned to death), and the raw fertilizer should be decomposed.
6. Apply thin fertilizer once a week in spring and autumn, not once every half month in winter. It is best to use compound flower fertilizer.
7. Asparagus doesn't like smoke. If you use a coal stove or charcoal fire to keep warm in winter, you should have proper ventilation every day.
8. Asparagus should be kept away from marble decorative items. Asparagus has a strong ability to absorb gaseous mercury. It should be noted that asparagus can also harm itself by absorbing mercury gas. Therefore, when placing asparagus, stay away from decorative materials that release mercury gas.
9. Asparagus should be pruned in time. Too dense branches will affect ventilation, lighting and appreciation, and should be pruned in time. If the evil roots multiply too much, divide the pots in time.
10, binding asparagus can make asparagus posture more beautiful, but it is not suitable for ropes that are too thick or have too much color difference. Bamboo strips should not be too thick, otherwise the slender asparagus will be set off too weakly.
The shaping method of asparagus is 1, and the pot control method: the size ratio of flowerpot to plant should be 1: 3, which can limit the growth of root system and keep the plant size unchanged.
2. Removing the growing point: When the new bud grows to 2 ~ 3 cm, removing the growing point can promote the regeneration of branches and leaves on the stem, control them from growing vines, and make the branches and leaves flat and the plant shape full.
3. Using the phototaxis of asparagus: rotating the direction of flowerpot in time can correct the growth shape of branches and leaves and keep the plant type unchanged.
4. Object shading method: that is, press the branches and leaves with cardboard or shade the sun, so that when the branches and leaves grow, they will rotate or bend to shade when they meet objects, thus achieving the purpose of modeling.
5. Comprehensive application of several modeling methods:
(1) Tower: Choose 2-3 tall, straight and beautiful stems as the main peak, remove all the growing points on the stems, and set the height to 30-35 cm. The remaining branches and new stems should not be higher than the main peak. For new shoots, the growing point can be determined according to the thickness of their stems. If its stem is thicker than the main peak, it should be picked; If it is thinner than the main peak, there is no need to pick it and let it grow. At the same time, it is necessary to constantly adjust the plant morphology by using the object occlusion method and its own phototaxis.
(2) Double-clump type: plant two asparagus plants, one high and one low, with a height of about 30 cm and a minimum of about 18 cm, and then shape them into tower asparagus in the growth process.
(3) Natural style: The natural growth of asparagus is the main plant type, and the basic methods such as picking growing points, covering things and using its phototaxis are still used to stretch the branches and leaves, giving people a natural aesthetic feeling.
It should be noted that the shaping of asparagus must be combined with fertilizer control and water control. That is, when the room temperature is 15- 18℃, water it once a week to keep the soil moist (it is advisable to press it with your fingers). Not fertilized or less fertilized.