First, the symptoms of soft rot: commonly known as "rotten sputum", "rot rot", the most susceptible to illness after the heart, the long period of damage, occurred in the rosette period to the core period, often causing serious losses. At the beginning of the disease, the outer leaves of the plants showed a wilting shape at noon, which could be recovered sooner or later. After a few days, due to the aggravation of the disease, the outer leaves no longer recovered and fell to the ground, and the leafballs were exposed, which was called “de-helpâ€. The pesticide net suggests that the root and neck of the plant have rotted at this time; if the leaf ball is gently kicked with the foot, it is easy to collapse on the ground, and the base of the petiole and the root and neck tissue are gray-brown soft and rot, sticky and stinky. taste. High Power Laser Polarizing Cube Beamsplitters High Power Laser Polarizing Cube Beamsplitters,Dielectric Concave Mirrors,Corner Reflector Mirror,Laser Reflector Lens Mirror Lambda Research Optics ChangChun,LTD. , https://www.lambdachina.com
Second, pesticide control methods in the early stage of the disease with agricultural streptomycin 150-200 times solution, or other biological pesticides double spray, or 70%. The original powder of the Kekesong 500-1000 times was used to irrigate the roots of the water-stained plants and the surrounding plants, and each plant was filled with 0.25 kg.
The main pest of Chinese cabbage is cabbage caterpillar, which can be controlled by water spray with 10% imidacloprid 5000 times solution or 40.7% chlorpyrifos 100-150 ml. Spray the pesticide once every 7-10 days, even spray 2-3 times.