Strawberry yellow disease is a kind of soil transmission disease. It is an important reason for the influence and the expansion of strawberries in recent years. Because strawberries are perennial plants, they have been planted for many years in the same land, causing a lot of accumulation of germs in the soil, coupled with factors such as the decline in varieties of disease resistance and poor field management. Important diseases in production.
Strawberry yellow wilt is mainly onset during the stolon stems, invading the root, and the symptoms of the above ground. The new leaves of the seedlings are lost to yellow or bending deformity. The leaves are small in shape. The leaflets on both sides of the compound leaves are asymmetric, deformed, most of the hardening, and the leaf color. Poor planting plants have poor growth, no anger, rough and non -luster on the surface of the leaves, withering and browning from the leaf margin, and finally the plant died. The dimensions of the underground roots, petioles and stems are brown or even darkened.
Pharmacy prevention and treatment of strawberry yellow disease is not effective. Therefore, the application of comprehensive prevention measures should be focused on control. ① Select healthy plants with disease -free plots to plant and plant a strong seedlings. The disease -free maternal plant can be obtained by spatial seedlings, that is, cut it before the stems of the stolons, insert it into the diseaseless soil, so that they can take root and use it as the mother plant. ② Avoid continuous stubble and implement rotation for more than 3 years. ③ Sowing or strict soil disinfection and sterilization before planting or planting. The method is that 667 square meters of chloride 3.5 to 20 liters, acupuncture or ditch, seal the soil covering membrane after application, and dispel gas after the membrane is exposed. During the high temperature period, deep, irrigation, covering the film, and using high temperature sterilization of subordinates. ④ Strengthen cultivation management measures. Pay attention to the soil after planting strawberries should not be too dry or too damp; remove the old leaves in time; it is found that the diseased plants should be removed as soon as possible to replenish the planting, deeply buried or burned to reduce the source of the infection of the germs. ⑤ Before planting or at first or at first, 70%methylboto wettable powder is used for 300-500 times liquid to disinfect or irrigated the root after planting.