The culture method of green orchid

Green pineapple is native to Central and South America. The green rattan is several meters long and has air roots at internodes. With the increase of growth age, the stem becomes thicker and the leaves become larger and larger. Leaves alternate, green, a few leaves will also be slightly yellow mottled, entire, heart-shaped, large evergreen vines, growing in tropical areas often climb on the rocks and trunks of rainforests, can grow into giant lianas.

Physiological characteristics

Sex likes warm and humid environment, which requires loose, fertile soil and good drainage. Potted green pineapple should choose rotten leaf soil with fertile, loose and good drainage, and partial acidity is better. Green pineapple is extremely shady and can be placed all the year round in the sunny place indoors. In darker rooms, it should be moved to a strong light environment every half month to restore for a period of time, otherwise it is easy to make the internodes grow and the leaves become smaller. Green pineapple likes the hot and humid environment, and the overwintering temperature should not be lower than 15 ℃. In order to keep the basin soil moist, water should be often sprayed on the leaf surface to increase the air humidity to facilitate the growth of aerial roots. Liquid fertilizer can be irrigated once a month during the vigorous growth period. For long-term indoor ornamental plants, the leaves at the base of the stem are easy to fall off and reduce the ornamental value, which can be pruned and renewed combined with cuttings in May and June when the temperature is getting warmer, so as to promote the sprouting of the basal stem.

Temperature

In winter, green pineapple can survive the winter safely when it is more than 10 ℃, and it can grow normally when it is over 20 ℃. Therefore, the general home environment is more suitable for the growth of green apple. The original growth condition of green pineapple is in the forest sheltered by towering trees, the positive direction is not strong. However, in the north of autumn and winter, in order to supplement the deficiency of temperature and photosynthesis, its illuminance should be increased. The way is to put the green pineapple in the place with the best indoor light, or move to the sealed balcony to bask in the sun at noon. At the same time, open windows as little as possible when the temperature is low, because the leaves may be frostbitten in a very short period of time.

Light

The positive direction of green pineapple is not strong, therefore, when breeding, you need to put the green pineapple in a place with better indoor light, and you can put it in the sun at noon. In the north, the green pineapple can survive the winter safely when the room temperature is above 10 ℃, and the green pineapple can grow normally when the room temperature is above 20 ℃. In general, it is not a big problem for families to reach this temperature, we should pay attention to avoid excessive temperature difference, and at the same time, we should also pay attention to the leaves not close to the heating equipment.

Moisture content

Planting green pineapple, watering can not be too much, you can spray water where it takes root, which can reduce the rate of water evaporation. Water every day to keep the soil wet, but do not accumulate water to breed mosquitoes. The amount of watering in autumn and winter should be strictly controlled according to room temperature. Before heating, the temperature is lower and the soil evaporation of the plant is slower. In order to reduce watering, the amount of water should be controlled between the original 1max, 4ml, 1max and 2. Even after heating, watering should not be too frequent, watering should be less watered into the basin, and should be oozed by brown silk. In addition, water should be sprayed to the aerial root growth of the brown column to reduce the insufficient water absorption of the root caused by rapid evaporation. Winter water to dry after a day of water is better, the water is too cold easy to damage the roots.

Fertilizer

Fertilizing the leaves of green pineapple, because the ordinary inorganic fertilizer is very difficult to be absorbed, therefore, it is necessary to use special fertilizer. In autumn and winter in the north, plants grow slowly or even stop growing, so fertilization should be reduced. Before winter, liquid inorganic fertilizer is mainly poured and sprayed, and the time is about 15 days. After winter, fertilizer is mainly sprayed on the leaf surface, mainly sprayed through the stomata on the leaf surface, and the fertilizer is absorbed through the stomata on the leaf surface, and the fertilizer effect can act directly on the leaf surface. Foliar fertilizer should use special fertilizer, ordinary inorganic fertilizer is not easy to be absorbed by foliar. Peking University Huasheng series and Japanese flowers can be used as foliar fertilizer.

Pest control of green pineapple

1. Anthracnose of green radish: the pathogen often harms the middle part of leaves and flowers. At the beginning, wet reddish-brown or dark-brown pustular spots appeared in the disease, and there was a faded green halo around the spots. after enlargement, there were long oval or strip-shaped patches, dark brown on the edge, yellowish brown on the inside, and ringlike markings converged by dark spots. Because of its black and brown spots, it is also known as black spot or black brown disease. The plant can be repeatedly infected during the growing period, and the control methods of green radish anthracnose are as follows:

There are many pesticides that ① can control anthracnose, such as mancozeb, carbendazim, thiophanate, carbendazim and so on.

The 1500-fold solution of "Shibao Gong" made in Germany by ② is a specific drug for the treatment of anthrax.