Orchid get sick, is the most painful thing for flower friends, especially soft rot. What is soft rot? Orchid got soft rot, what should we do? Pro, let's look down and learn!
What to do with orchid soft rot disease: in the early stage of orchid soft rot disease, small spots like water stains are produced at the base of buds. Under the condition of humidity, temperature and acid plant materials, they rapidly expand up and down after 2-3 days, showing dark green hot spots, which quickly erode into the interior of the plant, showing dark brown rot shape, giving off odor, and sometimes sending out fragrance.
When the diseased leaves of soft rot disease are pulled out, they often show that the disease can not be seen in the upper part. In fact, it rots to the soft part, and the disease develops rapidly. The pathogen of soft rot can stay in the soil with the remains of the disease for the winter. It spreads through the rain and invades through the wound. It is easy to get sick when the environment is hot and humid. Treatment of orchid soft rot disease: Generally speaking, the treatment method of orchid soft rot disease is to separate the diseased plants and soak them with 800 times solution of agricultural streptomycin for 1 hour, then water, rinse and cool the roots. After treatment, the plants should be cultured in vegetable culture, the plant material is easy to dry, place in a cool and ventilated place, the seedling condition is improved, and the sunlight should not be too strong. It is best to observe for 15-20 days, during which no beneficial bacteria can be used.
Prevention and control of orchid soft rot: 1
1) Cleaning and sanitation: starting from the environment, pots, plants, appliances, etc., we should do a good job in cleaning and sanitation in an all-round way to reduce the breeding of harmful bacteria.
2) There is dry and wet: the environment for grass cultivation, pots and plants can not be always wet and moist, especially in high temperature and high humidity, the dry environment should be maintained for a certain period of time.
3) Regular disinfection: after the grass environment is dry, timely disinfection, sterilization and insecticidal effect is good.
2. Management
1) Strengthen ventilation: Eucalyptus is anaerobic, ventilation can increase the supply of oxygen, oxygen has the effect of killing or preventing the growth of Eucalyptus. Fresh air should be continuously replenished during ventilation, and the effect is better.
2) Moderate control of water: in high temperature and high humidity, the orchid basin can not be always wet and moist. It is necessary to control the water moderately and dry management, so that the plant material will be loose and fresh air can enter into the plant material and play a role.
3) Moderate light: the sun should be shaded at high temperature, but it should not be covered too tightly. There should be scattered light. If conditions permit, the direct light before 8:00 a.m. should be fully utilized to kill bacteria and strengthen grass.
4) Less use of chemical fertilizer: some Eucalyptus nutrition requires special growth substances, namely organic nitrogen compounds. According to this characteristic, less or no chemical fertilizer containing organic nitrogen compounds is used to cut off the source of nutrient requirements of Eucalyptus.
5) Reduce worry: don't love too much, reduce the worry and injury of orchid grass people, and prevent the wound.
Soft rot of orchid
3. Orchid
1) Good introduction: the introduction of tissue culture seedlings of greenhouse grass is easy to suffer from soft rot, most of which is not caused by its own bacteria, but because of its lack of adjustment and adaptation ability and weak resistance. In the introduction, we should pay equal attention to the orchid grass and the environment, and try to choose the orchid with similar or worse environmental conditions. The best time for introduction is autumn, so the orchid has a long adaptation period.
2) Strong orchid grass: the truly strong orchid grass has strong adjustment and adaptability and good resistance, but it can't be raised by greenhouse and fertilizer. Growing really strong orchids requires plenty of light, varying temperature difference, constant training and enough time.
3) Control growth too fast: high temperature and high humidity is also the fastest growing time of orchid grass. Once it grows fast, its resistance will be weakened, and harmful bacteria are easy to invade. It is also the key to control the growth of orchid grass. Expand knowledge - the difference between orchid soft rot and stem rot: because the difference between orchid soft rot and stem rot is not very good, generally speaking, orchid soft rot can not let the whole plant die, because it has no ability to infect the old grass, and the orchid stem rot can quickly kill the whole orchid grass, and the recovery can be very small.