Chinese cabbage wilting disease
Symptoms start from the 6th to 7th leaf stage. Symptoms are characterized by the discoloration of the leaf from bottom to top, dull, dehydration, wilting, and then collapse from the bottom lobe. The whole plant quickly wilts until it dies. The roots of the diseased plants were shorter and less, showing signs of rot in the water stains. When the disease was severe, they were easy to pull up. The stems were shortened and shortened. The cut surface was light brown and rotted. There was no offensive smell to distinguish soft rot. Prevention methods: First, change crops for rotation and avoid continuous cropping. The second is the cultivation of sorghum. In addition to drought and water and saline-alkali land, sorghum should be used to cultivate 畦 5 to 10 cm high. The third is light water pouring, avoid flood irrigation, timely drainage after the rain. The fourth is to increase phosphorus and potassium fertilizers, apply formula fertilization, and increase disease resistance. The fifth is the use of live broadcast methods to avoid the infection of wounds caused by transplanting. Chemical control: At the beginning of the disease, use 75% chlorothalonil wettable powder 600 times, or 60% antivirus WP 500 times, or 72.2% Precise 600-800 times spray, every 7-10 Days to prevent and control 1, continuous prevention and treatment 2-3 times. For severe disease plots, 69% Ankmann Zinc WP can be used to irrigate the roots, 75-100 ml per plant. Ningbo Siny Medical Technology Co., Ltd , https://www.sinymedical.com