In recent years, root rot has risen in the strawberry growing area. Strawberry root rot mainly damages the root system. Root rot diseased strawberries, dry leaves and rot are found, and they are dead in the later stages. Farmers are eager to find ways to prevent them.
Through field investigation, the occurrence of strawberry root rot is closely related to the soil environment. Generally, the incidence of root rot in the land within 5 years of strawberry planting is relatively light or non-pathogenic, and planting of 5 years old, especially the old shed strawberry planted for more than 10 years Root rot is particularly serious and yields are also falling. So how to prevent strawberry root rot?
Reasonable rotation to clean the pasture to remove the diseased plants in front of the field and remove the diseased bodies, centrally burn them or heat-sterilize the soil during the idle period of the greenhouses, use 120 kg of lime nitrogen per mu, and continue to cover the greenhouse for 25 days after covering the membrane with water. Above, it can effectively kill soil bacteria and eggs.
High ridge plastic film cultivation science water fertilization root rot and shed humidity is too large or a watering is directly related. In order to reduce the humidity in the greenhouse, it is advisable to adopt high ridge and film-cover cultivation to achieve watering under the membrane and pouring in a small amount of water. It is advisable to adopt the drip irrigation method for the conditions. When basal fertilizer is used for strawberries, sufficient organic fertilizer should be applied to increase the amount of bio-organic fertilizer and deep-swap the soil to improve soil permeability and buffer strength. The amount of nitrogen, phosphorus and potassium fertilization applied in winter should not be too much. It is recommended to use NPK plus fertilization 5 kg and 4 kg of Pdidden fish protein mixed per acre, which can simultaneously play the role of swelling and rooting.
The prevention and treatment of strawberry root rot should be based on prevention. Spray 75% chlorothalonil wettable powder 500-800 times solution and 300-fold polydactyl fish protein respectively before and after flowering at the seedling stage. After the root irrigation with 500 times solution of Pridon fish protein and 800 times of hymexazol, the effect of preventing root rot in early stage was obvious. For the greenhouse strawberry that has now undergone root rot disease, the diseased plant should be pulled out in time, and the roots should be rooted with 1500 times solution of a cream and hymexazol and 500 times solution of Pidgin fish protein.
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