Method for increasing transplanting survival rate of blanket-shaped oilseed rape seedling plants

Abstract

The invention relates to a method for increasing the transplanting survival rate of blanket-shaped oilseed rape seedling plants, and belongs to the field of oilseed rape pest control. Before transplanting, root soaking treatment is conducted on blanket-shaped oilseed rape seedling plants, and root soaking liquid comprises cyazofamid, a water-soluble boron compound, imidacloprid, a rooting agent and water. According to the method for increasing the transplanting survival rate of the blanket-shaped oilseed rape seedling plants, root soaking treatment is conducted on blanket-shaped layers of blanket-shaped oilseed rape seedling roots through the root soaking liquid, so that further expansion of pathogenic bacteria carried in the early-stage seedling process and infection of the pathogenic bacteria in soil after field planting of the plants can be effectively reduced; meanwhile, the humidity of the roots of the plants can be increased during field planting of the plants, so that survival of the field-planted plants is accelerated; and seedling growth can be promoted, insect pests frequently occurring in the aphid high-emergence period during field planting are reduced, the occurrence rate of diseases and pests is reduced, the use of chemicals is reduced, and the cost is saved and the efficiency is improved.

Description

technical field [0001] The invention belongs to the field of prevention and control of rapeseed diseases and insect pests, and in particular relates to a method for improving the transplanting survival rate of blanket-shaped seedling-growing plants of rapeseed. Background technique [0002] Clubroot is a soil-borne disease caused by Plasmodium brassicae. When the environmental conditions are favorable for the occurrence of the disease, clubroot can lead to a serious decline in the yield of rapeseed crops or even failure, which seriously threatens the production of rapeseed. [0003] At present, for the prevention and treatment of clubroot in rapeseed, the methods of root irrigation with field chemicals, crop rotation and soil improvement are mainly adopted. Although soil improvement (such as applying a large amount of lime) can have a good effect on the control of rapeseed clubroot, it is easy to cause soil compaction and reduce soil fertility. Canola clubroot is difficult...

AI Technical Summary

Problems solved by technology

[0005] When adopting the new technology of rapeseed blanket seedling raising and mechanized transplanting, in the process of rapeseed blanket seedling raising, the existing soil is organic soil, the texture is dry, the nutrient ratio is complicated, and the cost is high. During the process, it is very easy to be infected with germs, and the humid and shady environment is very easy to accelerate the reproduction of germs. At the same time, the period of transplanting blanket-shaped seedlings is often a period of high incidence of aphid damage, but it is difficult to use spraying chemicals in the prior art. To solve the problem of disease prevention and control of plants infected with pathogens, root irrigation and other methods are not only time-consuming and expensive, but also have the risk of pesticide residues polluting the environment. Problems such as insect pests during transplanting have to be treated with pesticide spraying again, and there is an urgent need to find a solution. A method that is suitable for the normal growth of rapeseed blanket seedling plants and can also effectively prevent and control rapeseed clubroot, downy mildew, and damping-off, and at the same time, can also reduce the harm of pests such as aphids after transplanting