Cultivation and maintenance of Cymbidium, what is the pleating of the leaves of Cymbidium

What is the standard of the ideal gentleman orchid? The flower proverb tells us that "round, short, wide, thick, hard, flowers, bright, jump, greasy, tall".

"round" means that the head shape of the leaf should be round. That is, the egg type, without any sharp point. The whole plant type should be round, so as to face squarely like a fan, and the leaves are not seven long and eight short.

"short" refers to the length of the blade, which should be about 200 mm. The neck of the leaf is short and retracted quickly. A single leaf looks like a ping-pong racket.

"width" means that the width of the blade itself should be more than 100 mm. The two longitudinal veins should be wide, about 5 mm or more.

"thick" refers to the thickness of the blade, which should be more than 2 mm.

"hard" refers to hardness and elasticity, feeling hard without bran.

"Flower" refers to the contrast between leaves and veins in color.

"bright" means that the leaves are shiny.

"Jump" refers to the degree of protuberance of leaf veins. It requires that the longitudinal and transverse veins are obviously protruding and sturdy, and the longitudinal and transverse veins intersect at right angles to form a regular concave and convex shape.

"greasy" refers to the delicate structure of the blade and the smooth feel.

"Ting" means that the leaves are straight and straight upward, the negatives are flat and not drooping, and the rest of the leaves grow equidistant accordingly, so as to achieve the perfect plant shape of "looking at a line from the side and facing squarely like a fan".

Cultivation of Cymbidium

First, when the gentleman orchid is exposed to strong light for a long time, not only the leaves become rough and lose emerald green, but they are also easy to get sunburn, which makes the leaves suddenly yellow and dry, and the serious whole leaves turn yellow. So summer noon around two or three hours of shade, once the leaves have turned yellow, the leaves can be cut off to urge the leaves again.

Second, if the fertilizer and water is too big and thick, poor leaf cleaning, or mold infection will lead to rotten leaves. The leaves began to rot from the base, heart, or outside of the leaves, and in severe cases, all the leaves rotted away in five or six days. Timely water control and proper fertilization to make the basin soil moist up and down. After finding the rotten leaves, cut off the rotten leaves immediately, then sprinkle them with oxytetracycline powder around the rotten leaves, thoroughly disinfect them and put them in a ventilated and transparent place.

Third, when the temperature rises to more than 25 ℃, the growth of Magnolia is restrained. If you continue to apply fertilizer, the leaves will grow weak and grow, resulting in unhealthy plants, and even rotting roots and stems. Too much fertilization will cause the new leaves to suddenly shrink. It is necessary to change the soil or continue to pour water several times so that the thick fertilizer can be washed away and diluted.

Fourth, during the Meiyu period, high humidity, poor ventilation and hot temperature will wither the leaf tip and weaken the resistance to the disease. 0.1% carbendazim and topiramate should be used for exchange spray, once every 10 days.

Fifth, too much watering will cause the roots to rot, and the leaves will gradually wither and fall off from the bottom up. It is necessary to dig up the plants and wash out the soil, cut off the rotten roots, and dry them for four or five days, so that the roots contract slightly, and then put them back on the basin. If half of the water is often watered, the root system will be withered and the leaves will wither and fall off from the bottom up, so it should be watered thoroughly in time.

Sixth, the gentleman orchid is a fleshy root, the ability to absorb water is weak, coupled with thick leaves, water content and more, if the basin soil is too wet or too dry for a long time, it will cause water reversal, the leaf tip will gradually blacken and rot, so it is appropriate to keep the basin soil dry. It should be noted that whether small, medium or large plants, pouring water on the leaves in the center, or often in the rain, or dripping into the center, will make the new leaves in the center rot, and in serious cases, they will rot, so don't water the leaves on the orchids, especially avoid watering the leaves in the center.

Seventh, high temperature, fierce sun, less Rain Water, dry environment, no ventilation, or poor drainage, or the application of raw fertilizer will make the leaves scorched yellow or fall off. Use loose and dry soil, apply rotten fermented light fertilizer, and put it in a ventilated and cool environment.

Eighth, the unfermented horse dung or meat bones at the bottom of the basin are easy to produce white nematodes, making the leaves scorched yellow, so it is necessary to change the basin soil and replant.

9. There is a pockmarked macula in the center of the leaf. On the surface, it appears that the leaf is sick and infected, but in fact, there are problems in the root, such as the basin soil is too wet, or the place is stuffy and not ventilated, or the application of human fertilizer and thick fertilizer will appear the above symptoms. If you fertilize too much, too thick or apply raw fertilizer, you should change the soil immediately, and if it is not placed properly, you should change the place to make the basin soil dry.

Due to the mold activity in the basin soil, the leaves are spotted and disinfected with formalin in time. Leaf spots have appeared, which can be wiped with 1000 times oxytetracycline or tobacco stem water soaking solution to control the development of leaf spots.

Maintenance of Magnolia during dormancy period

One of the threats to the magnolia in the hot summer is strong light. Timely shading and shading measures can avoid or reduce some harm. One way is to move the plant to a place where the sun can be seen sooner or later in early summer, or to receive astigmatism in the shade of trees or flowers. Move to a place with skylight but no sunshine at the height of summer. Put the north balcony of the building, under the eaves of the bungalow (south-facing back eaves, north-facing front eaves), or shed, indoor, etc. The second method is to set up a frame at the top of the plant and shade it with a shade net or bamboo curtain. Spread out the net when the sun comes, and roll it up after the sun. However, due to different sun intensity, the shading of the net should be different.

The second threat to the magnolia in preventing heat and cooling in summer is the high temperature climate. The measures taken are as follows: one is to cool down with water. That is, when the temperature is the highest in the day, spray water to the leaves and sprinkle water to the ground with sprayers and sprinklers; you can also set up water tanks (pots) and cushion sponges (sacks) under flowerpots, and put water tanks nearby to increase air humidity and reduce plant temperature. the second is to improve ventilation. Put the plant in a well-ventilated place to help the plant dissipate heat and create a cool and ventilated living environment.

Because the orchid is in dormant or semi-dormant period, its metabolism is slow and its growth is stagnant. In addition, the water consumption is relatively reduced by taking the above measures. If too much water is watered at this time, a harsh environment of high temperature and humidity will be formed, which is easy to make the basin soil anoxic, resulting in rotten roots. If too little watering, it is easy to make the root system shrink, or even the whole plant withered. Therefore, the necessary control of moisture should be carried out to achieve timely and appropriate amount in order to keep the basin soil slightly wet. During the dormant period, the application of fertilizer should be stopped because the physiological activity is very weak and basically does not consume nutrients. Otherwise, it will also cause rotten roots, and even be killed by fertilizer.

The gentleman orchid sandwiches the arrow to dispel the doubt

The temperature is not suitable for Cymbidium to move arrows. The suitable temperature is 20 ℃. In this growing period, if the temperature is lower than 15 ℃, the arrow scape is not easy to come out, that is, the hidden flowers in the leaves will be formed. At this time, the indoor temperature should be raised appropriately to ensure the optimum temperature for the gentleman orchid to move the arrow.

If the temperature difference is not enough, there should be a certain temperature difference between day and night during the growth of Cymbidium in order to accumulate nutrients. Generally speaking, the temperature during the day is higher than that at night. When the temperature should be controlled at 25 ℃ and the temperature difference between day and night is about 8 ℃-lO ℃ after flower bud differentiation, the flower arrow will be easier to jump out.

After insufficient fertilization, Magnolia enters the reproductive growth period and requires a large amount of fertilizer. At this time, the gentleman orchid waiting to bloom should appropriately increase the number of fertilization, generally once a month, mainly phosphorus and potash fertilizer. 0.2% potassium dihydrogen phosphate aqueous solution can also be sprayed on the leaves to facilitate the flowering of arrows.

Improper watering of gentleman orchid arrow pedicel during the formation period of the growth peak water demand is larger than usual, at this time, if insufficient watering, there will be arrow entrapment phenomenon. Appropriately increase the amount of water, it is appropriate to natural water, tap water should be oxidized.