In the countryside, planting cabbage can be seen everywhere. Basic households will grow cabbage. First, cabbage is better, and the yield of cabbage is not bad. However, the old farmers should be familiar with the rotten roots of cabbage, but for the reason of the rotten roots of cabbage, it is estimated that everyone is not so familiar. Let's take a look at several common causes of rotten roots in cabbage and preventive measures for rotten roots of cabbage. There are several reasons for the rotten roots of Chinese cabbage: 1. Bacterial soft rot of Chinese cabbage. Soft rot is also called rotten cockroaches. Most of them begin to develop in the heart of the heart. At the beginning of the disease, the outer leaves are mostly drooping under the sunlight, but they still recover in the morning and evening. With the development of the disease, these leaves no longer recover, revealing the leaf ball. The lesions are water-soaked, and the tissues of the diseased area become brown, rotten and sticky, and smelly. Control method: avoid causing mechanical damage to cabbage during farm operation, timely control of insects such as beetle; in the early stage of cabbage, use agricultural streptomycin, spring leimycin, etc. for spraying, the focus is on the base of cabbage, you can also use the above Medicinal roots. 2, cabbage root shrinkage disease. When the seedlings are inoculated, the base of the stem is water-soaked, collapsed, and lodging, and is collapsed. In adult plants, the outer leaves first wilted during the day, recovered at night, and began to die with the outer leaves. The diseased plant has poor ball and can't even stand the ball. When the roots of the plants are opened, the roots become brown and rot, the middle of the roots collapses, and the lower part disappears, leaving only the upper part. The germs spread with rainwater and irrigation water, and the agricultural implements can spread and expand rapidly. Prevention and treatment method: In the early stage of the disease, timely use the carbendazim WP, the metalaxyl WP, the Mancozeb WP or the Mold/Glycol solution to irrigate the roots or spray the base of the plant stem and the surrounding soil. 3, the root disease of Chinese cabbage. The clubroot disease of Chinese cabbage is widely distributed in all provinces of the country, in which the disease is serious in the south, and a large number of dead in the seedling stage. The symptoms of adult planting are: the leaves of the base gradually turn yellow, the wilting, the water loss and dryness, and the main, lateral and fibrous roots form tumors of different sizes, which begin to be smooth, then become rough and cracked, the plants are short, and the growth is slow. Withered and died. Control method: (1) The plots with serious disease and non-cruciferous plants are rotated for 6 years, cultivated in high ridges, drained in time after rain, lime is applied in acid soil to adjust pH, increase fertilizer and potassium fertilizer, increase soil fertility, and timely remove the diseased plants. , buried or burned. (2) When planting, use 20% pentachloronitrobenzene powder 1-2Kg (mu) to treat the soil in the colonization hole. (3) In the early stage of the disease, 40% fluazinam 140---160 times solution can be used for irrigation. It is best to take the principle of comprehensive prevention and control against the rotten roots of cabbage. Therefore, in the process of cabbage cultivation, you need to pay attention to the following points: (1) Implement a rotation. It is advisable to use water and dry wheels in places where conditions permit. Do not apply organic fertilizer with disease. To deepen the whitening, control the source of the bacteria. (2) The implementation of sorghum cultivation is conducive to drainage and flood control, which can reduce the occurrence of diseases. (3) Reasonable irrigation and fertilization: to achieve sufficient fertilizer, timely topdressing, so that seedling growth is strong, and enhance disease resistance. (4) Removal of diseased plants in time: removal of diseased plants can reduce the source of bacteria and prevent the spread of pathogens. In particular, it should be checked and treated in time before irrigation. Lime is sprayed into the hole for sterilization. (5) Pay attention to pest control: avoid causing wounds to prevent invasion of germs. SARS-CoV-2 IgM/IgG Duo Test (Colloidal Gold) SARS-CoV-2,IgM/IgG Duo,SARS-CoV-2 antibody,COVID-19 antibody,Colloidal Gold Shenzhen Uni-medica Technology Co.,Ltd , https://www.unimed-global.com
Cabbage Planting: Causes and Control Measures of Chinese Cabbage Rotten Roots