After investigation, it is known that the following reasons cause bean seedlings to be "bad".
The first is a bacterial disease. The leaves of the seedlings are red-brown and ulcerous. Can be used 72% of agricultural streptomycin sulfate powder 3500 times spray or 20% thiazole copper 2000 times spray control.
The second is whitefly, locust damage caused by bad head. In the heart of the leaves can be seen whitefly, aphids, available 3.3% Avi. bifentanyl EC 1500 times, or 10% nitenpyrazine 4000 times liquid spray.
The third reason is that due to low-temperature freezing damage, the leaves are curled inwards, white and dry, but not rotten. If the temperature is normal, you can recover quickly.
Fourth, due to low temperature, low rainfall and high humidity in the field, the seedlings have malnutrition, slow growth and dwarfing, but they will not rot. The poor seedling roots, less white roots, and more black roots can be seen. Drain the drains to reduce the soil moisture.
If it is a bacterial epidemic disease and there is a large amount of bad heads, spraying pesticides for prevention and treatment, and applying quick lime 75 kg/mu, then change the non-bean vegetable crops.
Our small port has a good sealing ability and stable chemical properties. The excellent chemical resistance,heat resistance and good compatibility with the Drugs give us a guarantee to use the products safely. From the input to the output, the products go through a series of professional tests and strict quality controlling procedure. The joint is produced in the clean plant with the whole working plant reaching to Class 10000, and some even for Class 100 million grade. Our workshops are designed which meet the GMP standard.
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