Which fungicides can control root rot of Chinese cabbage
In the early stage of the onset of Chinese cabbage root rot, it is best to remove the diseased plants in the field, seal them with quicklime or lime water, and then generally use the medicine in the field. Considering that some bacteria have been immersed into some undiseased strains at this time, it is best to choose highly effective fungicides with internal absorption. It is a bacterial disease, which mainly depends on Rain Water or irrigation water to spread widely in the field. It is the key to master this rule, select planting plots and pay attention to prevention in the onset season (such as rainy season, especially in the case of flooding). Prophylactic drugs can be used to control bacterial diseases, such as agricultural streptomycin, Ye Qingshuang, noble copper, thiobacillus copper, thiosen copper and so on. Ye Qingshuang and organic copper preparations thiobacillus copper (Longke bacteria), thiosen copper have a certain internal absorption, can be selected, it is best to use alternately. Copper noble (basic copper sulfate) and other drugs have no internal absorption effect, after the use of drugs, the effect on infected plants will be worse. If the incidence in the field is very high, pull it out.
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Key points of fertilization techniques for autumn sowing Chinese cabbage
Chinese cabbage is also known as heading Chinese cabbage and yellow bud white. It originated in our country. China is also rich in variety resources. Its per unit yield is high, with a general yield of 3500 Murray 4000 kg per mu and a high yield of more than 5000 kg. 1. Botanical characteristics: the root system of Chinese cabbage is well developed, and the radicle can form a fleshy taproot. The main root is slender.
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Notes on the use of drugs for prevention and treatment of root swelling of Chinese cabbage
Chinese cabbage root swelling disease refers to the formation of tumors of different sizes and shapes in the root of Chinese cabbage. The tumor is smooth in the early stage, cracked and rough in the later stage, and is easy to infect bacteria after cracking. Root swelling not only harms cabbage, but also a variety of cruciferous crops. Root swelling disease can be damaged in the seedling stage of Chinese cabbage and die when it is serious. The disease.
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