Control methods of soft rot of orchids

In fact, orchid soft rot is not easy to treat, from the characteristics of plant pathogenic bacteria item 6 can be known, to the naked eye can find the symptoms, the invasion of bluegrass is already late, no medicine is useful, so orchid soft rot prevention is the key.

I. Environmental aspects

1. Cleanliness and hygiene: start with the environment of raising grass, pots, plant materials, appliances, etc., to do a good job in cleaning and hygiene in an all-round way to reduce the breeding of harmful bacteria.

2, dry and wet: grass-raising environment, pots, plant materials can not be often wet, especially in high temperature and high humidity, should be kept dry for a certain period of time.

3. Regular disinfection: after the grass environment is dry, disinfection, sterilization and insecticidal should be carried out in time, and the effect is better.

II. Management

1. Strengthen ventilation: Eucalyptus is both anaerobic, ventilation can increase the supply of oxygen, oxygen can kill or prevent the growth of Escherichia coli, ventilation should constantly supplement fresh air, the effect is better.

2. Moderate water control: the orchid basin can not be wet and moist at high temperature and high humidity. It is necessary to properly control water and dry management, so that the plant material will be loose and fresh air can enter the plant material and play a role.

3, moderate lighting: shade at high temperature, but not too tightly, there should be scattered light, conditional direct light before 8 o'clock in the morning should be fully utilized, both sterilization and strong grass.

4. Use less chemical fertilizers: some Eucella nutrition requires special growth substances, that is, organic nitrogen compounds. Based on this property, little or no fertilizers containing organic nitrogen compounds are used to cut off the source of nutritional requirements for Eucella.

five. Reduce worry: do not love too much, reduce the artificial worry and injury to bluegrass, and prevent wounds.

Third, bluegrass

The main results are as follows: 1. Good introduction: greenhouse grass of tissue culture seedlings is easy to suffer from soft rot, which is not caused by its own bacteria, but by its own lack of adjustment and adaptation ability and weak resistance. In the introduction, we should pay equal attention to the bluegrass and the environment, and try to choose the bluegrass with similar or worse environmental conditions. No introduction during the period of high temperature and humidity, the best introduction is in autumn, so bluegrass has a longer adaptation period.

2. Raise strong bluegrass: the really strong bluegrass has strong ability of adjustment and adaptation and good resistance, but it can not be raised by greenhouse and fertilizer. Growing really strong bluegrass requires plenty of light, a changing temperature difference, frequent experience, and enough time.

three. Control growth too fast: high temperature and humidity is also the fastest time for bluegrass growth, a fast growth, its resistance will be weakened, harmful bacteria easy to invade. Controlling the rapid growth of bluegrass is also the key to prevent the disease of bluegrass.

IV. Treatment

1. Soft rot has no rule of law: it can be known from item 6 of the characteristics of plant pathogenic bacteria that by the time the symptoms can be found by the naked eye, the invading bluegrass is in its late stage and no medicine is available.

2. Diligent observation and early discovery: although soft rot does not have the rule of law, it is still necessary to observe it diligently. if there are anomalies in key bluegrass, orchid pot and bluegrass, we should be very careful. Only when we find it early can we deal with it early, with less infection and less loss.

3. Treatment method: once soft rot is found, it should be dealt with in time. The conventional and the most effective method at present is the seedling separation method. First take off the basin, cut from the farthest seedling, one seedling separated, to the cut discolored grass. If there is only one or two seedlings, do not take off the basin, first use the medicine, and then stop the water, let it dry thoroughly, and then water the bluegrass when it is dehydrated, try your luck.