1. Water pouring: The epidemic disease is transmitted by the water flow, such as flood irrigation. Because the root sucking capacity of the leek is poor, it is very easy to cause the indoor humidity to be too large and spread the epidemic. In addition, when topdressing, it is necessary to pay attention to topdressing the application of phosphorus and potassium fertilizers, and more nitrogenous fertilizers will cause the disease to spread. 2. Pick up net dead leaves: The dead leaves that remain in the soil are the pathogens of the leek outbreak. When the leaves of the diseased plants are dry and fall on the ground, they must be ventilated in time to reduce the indoor pathogenic bacteria. 3, timely ventilation after watering: indoor temperature is too high, prone to epidemics. So after each watering, ventilation should be timely to reduce the indoor temperature. The air release should be selected at noon on sunny days. The ventilation time should be 2 to 3 hours, and the area of ​​the sheds should be 40 to 50 square meters. The area is too large to be easily ventilated and the temperature and humidity are not well controlled. 4. Control of spraying: The diseased leaves of leek are found indoors, and chemical control must be carried out in a timely manner. Can be used 50% carbendazim WP 500 times or 40% EB aluminum wettable powder 400 times spray control, spray once every 7 to 10 days, continuous spray 3 times, you can receive good results. Do not over-concentrate when spraying.
We're Professional Supplier Extract Powder manufacturers and suppliers in China specialized in providing high-quality products at low price. We warmly welcome you to buy or wholesale bulk Supplier Extract Powder for sale here from our factory. For a free sample, contact us now.
Supplier Extract Powder,Supplier Extract ,Supplier Powder Manufacturer in China Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.apipepdites.com