Scientific Management of Aloe vera planted in greenhouse

Aloe vera belongs to Liliaceae herbaceous succulent perennials, adult leaves emerald green, white spots desalination, leaves 60 cm long, 10 cm 15 cm wide, smooth and thick, with great ornamental value, but also has medicinal, health care, beauty, air purification functions, high commodity value. The following technical points should be paid attention to in greenhouse planting in North China.

First, disinfect, fertilize, prepare land and make beds.

Aloe vera does not like clay and stagnant water, so it is planted in loose and fertile sandy soil and dug drainage ditches. 15-20 days before planting, 1 kg of more than 100% dust per mu of greenhouse was evenly sprayed, and 5 cubic meters of farm manure was applied at one time. Deep ploughing 25 cm, rake flat bed, bed width 1.3 meters, airtight greenhouse, high temperature disinfection.

Second, reasonable close planting.

The vents of the greenhouse are all opened for ventilation and ready to be planted for about 15 days. It was planted when there was no smell in the shed after 3-4 days of ventilation. Transplant seedlings or cuttings. It is better to plant in spring and autumn in North China, when transplanting seedlings or cutting bud tips, slow seedlings fast, fast rooting, conducive to safe overwintering. When transplanting, select the seedlings with more than 2 leaves, strong and disease-free. Cuttings with 2-3 leaves, leaves 10-15 cm long, drying for 3-4 days, the wound healed well, disease-free and robust buds for cutting. The plant row spacing is 50 cm × 50 cm, and the two rows are staggered with each other, which is convenient for plant lighting and leaf growth. Flooded and watered after planting.

Third, scientific management.

1. The removal of weeds can not only improve the absorption and utilization of fertilizer, but also improve the photosynthesis of aloe and reduce the chance of infection. Planting within half a year after each watering timely paddle hoe, weeding. Aloe root has a shallow surface, and it is easy to hurt the root by spreading and hoeing, so after planting seedlings for half a year, weeds should be removed and herbicides should not be used. During the growth of aloe, it is easy to grow lateral buds from the bottom. if lateral buds are used for propagation, they can be cut off with a clean knife when the lateral buds grow to 3 or 4 leaves and can be used after drying for 3 or 4 days. Otherwise, wipe off the lateral buds and reduce fertilizer consumption. two。 Timely watering, avoid stagnant water. The soil is too wet, poor air permeability, easy to form root rot, leaf rot and so on. Watering should be done immediately after watering. Aloe vera grows slowly when the soil is too dry. Combined with the application of organic fertilizer, proper watering, no empty water, 20 kg organic fertilizer per mu each time. 3. The suitable temperature for aloe growth is about 25 ℃, and it is not conducive to growth when it is higher than 30 ℃ or lower than 7 ℃. There is no dripping film on the greenhouse before and after the National Day, prepare grass grass to prevent cold current frostbite aloe. Hang straw curtain or cotton curtain inside and outside the greenhouse door in winter. When the outside temperature drops below 5 ℃, buckle the small arch shed in the greenhouse to raise the temperature. Take under-film watering when dry, do not flood irrigation, prevent excessive humidity, infection disease, increase the vent after pouring. When lowering the temperature in the shed, increase the vent and open the grass. Aloe likes weak light and is afraid of strong light. Leaves exposed to direct sunlight above 30 ℃ are easy to burn. When the average temperature is about 20 ℃, it is necessary to remove the drip-free film in time and put on the sunshade net. 4. Aloe has aroma, has a repellent effect on insects, and generally does not have insect pests. If there are red spiders and aphids, you can use towel gourd to add appropriate amount of water, mash and remove dregs, take the original liquid, mix 7 parts of original solution with 13 parts of water, add 0.5 kg of water per kilogram and a small amount of soap liquid to stir and spray; to prevent anthracnose, brown spot and root rot, organic fertilizer should be applied reasonably, with little or no application of pure nitrogen fertilizer to improve disease resistance. Spraying 500 times of 40% ethyl phosphate aluminum wettable powder or 600 times of 7s% chlorothalonil wettable powder every 10 days can prevent anthracnose and brown spot. 2000 times solution of streptomycin can prevent root rot.